ライフサイエンスコーパス: hydrogen atom

1 igand efficiency (0.45-0.50 kcal/mol per non-hydrogen atom).

2 operties are expected to mirror those of the hydrogen atom.

3 a ligand efficiency of 0.34 kcal/mol per non-hydrogen atom.

4 the unavailability of a syn-periplanar beta-hydrogen atom.

5 the central B-B bond is bridged by a single hydrogen atom.

6 by taking into account the repulsion between hydrogen atoms.

7 cal conductance and the adsorption energy of hydrogen atoms.

8 magnets by engineering grain boundaries with hydrogen atoms.

9 g as both a photoreductant and the source of hydrogen atoms.

10 or of radical species and a chiral source of hydrogen atoms.

11 In 2010, a new method using muonic hydrogen atoms(1) found a substantial discrepancy compar

12 the sum of van der Waals radii of carbon and hydrogen atoms (2.9 A).

13 thanum) is at the centre of a cage formed by hydrogen atoms(2-4).

14 sp(3))-H halogenation sequence by sequential hydrogen atom abstraction (HAA) and radical capture.

15 -NH)(mu-N(3)) (5) formed from intermolecular hydrogen atom abstraction (HAA) of strong C-H bonds (BDE

16 ters that enables 1e(-) activation of O2 for hydrogen atom abstraction (HAA) of substrate C-H bonds a

17 d by coupling H(+) and e(-) transfers as net hydrogen atom abstraction (HAA) steps using the 2,4,6-tr

18 retro-Bergman ring opening predominates over hydrogen atom abstraction (k-1 > k2) for 6,7-diethynylqu

19 the thermodynamic unfavorability of both its hydrogen atom abstraction and oligomerization reactions

20 inglet oxygen scavenging, electron transfer, hydrogen atom abstraction and radical adduct formation.

21 The capability of LCuF to perform both hydrogen atom abstraction and radical capture was levera

22 s in ((iPr)PDI)Mo(NH3)2(eta(2)-C2H4) enabled hydrogen atom abstraction and synthesis of a terminal ni

23 ry is at play, rather than classical Norrish hydrogen atom abstraction as initially conceived.

24 Thus, replacement of C-H by C-D raises the hydrogen atom abstraction barriers and enables a regiose

25 graphy; and deuterium isotope effects on the hydrogen atom abstraction by the adenosyl radical were u

26 te hexahydrate is described as a convenient, hydrogen atom abstraction catalyst that can mediate fluo

27 photocatalysts for the requisite high-energy hydrogen atom abstraction event.

28 udies reveal that catalysis proceeds through hydrogen atom abstraction followed by radical rebound, a

29 lysed ring contraction reaction initiated by hydrogen atom abstraction from C2'.

30 initial cleavage of H(2)O(2) and subsequent hydrogen atom abstraction from chitin by the copper-oxyl

31 ion of dG(N1-H)(.) via dG(N2-H)(.) following hydrogen atom abstraction from dG is unlikely to be a ma

32 uces vinyl radical intermediates that affect hydrogen atom abstraction from DNA, leading to the forma

33 xyl radicals, a species responsible for both hydrogen atom abstraction from the CH reagent and the se

34 ion of HO(.) with dG was proposed to involve hydrogen atom abstraction from the N2-amine.

35 eration of the purine radical resulting from hydrogen atom abstraction from the N6-amine of 2'-deoxya

36 Formal hydrogen atom abstraction from the nitrogen-hydrogen bon

37 a proton to DMDS, which is then followed by hydrogen atom abstraction from the protonated sulfur ato

38 xperimental/theoretical study suggested that hydrogen atom abstraction in TAA by DPPH was located on

39 The reaction involves hydrogen atom abstraction in the transition state, and t

40 lyze the origin of this unexpected selective hydrogen atom abstraction pathway and find that the alte

41 )-superoxo species are capable of performing hydrogen atom abstraction processes.

42 nism for the reaction that is initiated by a hydrogen atom abstraction reaction, which enables a keto

43 s generally proceeds through two consecutive hydrogen atom abstraction steps from two adjacent carbon

44 We show that the order of the hydrogen atom abstraction steps, however, is opposite of

45 At higher energies, spin-allowed hydrogen atom abstraction to form FeOH(+) predominates.

46 electivity switch from aliphatic to aldehyde hydrogen atom abstraction upon deuteration of the substr

47 pathway and find that the alternative C(3)-H hydrogen atom abstraction would be followed by a low-ene

48 investigate the kinetic significance of the hydrogen atom abstraction.

49 enable remote C-H functionalization via 1,5-hydrogen atom abstraction.

50 e decomposition via intra- or intermolecular hydrogen-atom abstraction (HAA) from an imido aryl ortho

51 ts on the thermodynamics and kinetics of its hydrogen-atom abstraction (HAT) reactions.

52 Hydrogen-atom abstraction affords an achiral benzylic ra

53 kinetic control, through sequential steps of hydrogen-atom abstraction and hydrogen-atom donation med

54 xquisitely selective tertiary amine-mediated hydrogen-atom abstraction at the N6-methyl group to form

55 ever, that are associated with variations in hydrogen-atom abstraction barrier heights and tunneling

56 s the origin of the reactivity preference of hydrogen-atom abstraction over nucleophilic addition.

57 Manganese(III)-peroxo can react through hydrogen-atom abstraction reactions instead of the commo

58 On this basis, we developed a hydrogen-atom abstraction strategy that allows for a con

59 that an oxo-Mn(V) species is responsible for hydrogen-atom abstraction.

60 cohols is achieved by thiyl radical mediated hydrogen-atom abstraction.

61 er from TEMPOH, but is an intrinsically poor hydrogen atom abstractor (BDFE(OH) of 77.2 kcal/mol) bas

62 consistent with these observations involving hydrogen atom addition to the ipso position of the pheny

63 uous assignment of adenosine radicals as N-7 hydrogen atom adducts.

64 Hydrogen atom adsorption is the major driving force for

65 the photoinduced isomer the distance between hydrogen atom and carbon atom to which it migrates in th

66 a and an initial estimate of the energy of a hydrogen atom and of a carbon atom, along with the ab in

67 ple cubic like phosphorus layers capped with hydrogen atoms and layers of H2 molecules, are predicted

68 experiments show dramatic rate variations in hydrogen-atom and oxygen-atom transfer reactions, with f

69 tion can only be solved analytically for the hydrogen atom, and the numerically exact full configurat

70 allows the visualization of the positions of hydrogen atoms, and computation to characterize the cata

71 of much larger molecules, with dozens of non-hydrogen atoms, and not necessarily planar.

72 tertiary stereogenic centres containing one hydrogen atom are often set by enantioselective desymmet

73 ructure of H3 S, and suggest that the A site hydrogen atoms are most likely fluxional even at Tc .

74 e question of why only select alpha-ethereal hydrogen atoms are targeted in the reaction.

75 ton scattering (e-p) and the spectroscopy of hydrogen atoms are the two methods traditionally used to

76 cron (Bt) catalyzes abstraction of the pro-S hydrogen atom, as evidenced by the transfer of deuterium

77 ly, when the nitrogen-atom substituent was a hydrogen atom, as in 2d, 4, and 6, the nitrogen atom was

78 stars, whereas secondary reactions involving hydrogen atom assisted isomerization of thermodynamicall

79 ,beta-unsaturated aldehyde, which contains a hydrogen atom at the gamma position, an amine-aldehyde-d

80 ydrogen atoms reveal that the segregation of hydrogen atoms at the grain boundaries, rather than the

81 the motions of the phosphorus atoms and the hydrogen atoms bound to them.

82 unusual cationic, planar tetraborane with a hydrogen atom bridging the central B(2) moiety.

83 Fluorine atoms are similar in size to hydrogen atoms but have distinct electronic properties,

84 tertiary stereogenic centres containing one hydrogen atom, but they possess distinct charge distribu

85 deuterium, while replacing the transferring hydrogen atom by a methyl group makes the substrate inac

86 fect for the replacement of the transferring hydrogen atom by deuterium, while replacing the transfer

87 s observed upon substituting the transferred hydrogen atoms by deuterium, indicating that the process

88 Moreover, the scattering potential from many hydrogen atoms can be visualized in difference maps, all

89 This study demonstrates that hydrogen atoms can migrate from a more strongly binding

90 omb repulsion between the negatively charged hydrogen atoms capping the phosphorus layers.

91 weakly bound states on the palladium at high hydrogen atom coverages which are nearly isoenergetic wi

92 olate along the Cl-Os-CPh axis of 2 with the hydrogen atom directed to the alkylidyne leads to alkyny

93 along the X-Os-CPh axis of 2 and 5 with the hydrogen atom directed to the halide gives the alkynyl-t

94 The hydrogen atoms donate electrons to the Ni d orbital and

95 ve hydrogen atom transfer (cHAT), where each hydrogen atom donated to the alkene arrives from a diffe

96 h pyrylium oxygen, while 3-OH group improved hydrogen atom donation because of the stabilization by a

97 The two-hydrogen atom donation process is frequently used to exp

98 ntial steps of hydrogen-atom abstraction and hydrogen-atom donation mediated by two distinct catalyst

99 O)n shows that this reagent is a very strong hydrogen atom donor as well as an outer-sphere reductant

100 that tris(trimethylsilyl)silane is an ideal hydrogen atom donor enabling highly effective photoredox

101 ble-light-absorbing reagent and electron and hydrogen atom donor to promote the desulfonylation react

102 photocatalyst is reductively quenched by the hydrogen atom donor, and returned in its original oxidat

103 he TEA radical cation serves as an effective hydrogen atom donor, confirmed by nuclear magnetic reson

104 f an iridium photocatalyst and an aryl thiol hydrogen atom donor.

105 emperature, using ozone, an iron salt, and a hydrogen atom donor.

106 f PhB( (t)BuIm)(3)Co(III)O with a variety of hydrogen atom donors demonstrates that the reactivity of

107 rdinate ((Ar) L)Fe(kappa(2) -N,O-AZADO) with hydrogen atom donors yields ferric hydroxide ((Ar) L)Fe(

108 et C(9)H(9) intermediate that dissociates by hydrogen atom emission via a tight transition state.

109 By contrast, the simplicity of the hydrogen atom enables precise experimental measurements

110 These oxidants abstract a hydrogen atom from a substrate C-H bond to generate an a

111 lytic mechanism begins with abstraction of a hydrogen atom from C-4 (or possibly C-3) initiating the

112 hus directing it to exclusively abstract the hydrogen atom from Fe-OH, thereby forming Cpd I, while p

113 radical, the enzyme guides the delivery of a hydrogen atom from flavin-a challenging feat for small-m

114 CdSe QD plays a key role by abstracting the hydrogen atom from the C-H bond of the alcohol (R(1) CH(

115 Stereoselective delivery of a hydrogen atom from the flavin semiquinone to the prochir

116 ntal step(s) of initial transfer of a formal hydrogen atom from the SmI2-water reagent system to prod

117 ions, we find that the oxidant abstracts the hydrogen atom from the strong C(2)-H bond rather than th

118 -oxyl radical, which efficiently abstracts a hydrogen atom from the substrates, regenerating the medi

119 ions competitively replace two of the three hydrogen atoms from cyanuric acid resulting in the trans

120 id alteration, the mere removal of a pair of hydrogen atoms from juxtaposed cysteine residues, contra

121 fler-Freytag reaction-amidyl radicals remove hydrogen atoms from unactivated aliphatic C-H bonds.

122 This residue then abstracts a net hydrogen atom (H(*)) from propionate 2, followed by migr

123 d that the reaction takes place by concerted hydrogen atom (H(*)) transfer that couples to an electro

124 Further, these hydrogen atom (H*) equivalents are generated from comple

125 aving either n-octyl groups (octyl-tpPDI) or hydrogen atoms (H-tpPDI) attached to its imide nitrogen

126 The spectrum of the hydrogen atom has played a central part in fundamental p

127 Here we demonstrate how the position of a hydrogen atom in the catalytic triad of an aminoglycosid

128 envisioned for precision spectroscopy of the hydrogen atom in the ultraviolet, optical frequency comb

129 The number of hydrogen atoms in a metal is controlled by the interacti

130 ce for substrates that have the transferring hydrogen atoms in close proximity, such as ortho-tetrach

131 lity of visualizing the nuclear positions of hydrogen atoms in macromolecules.

132 us atoms in the equatorial positions and two hydrogen atoms in the axial positions (I4/mmm and 2FU-C2

133 The position, bonding and dynamics of hydrogen atoms in the catalytic centers of proteins are

134 electrons can be transferred to the adsorbed hydrogen atoms in the catalytic process more efficiently

135 the distribution and dynamical transport of hydrogen atoms in the terrestrial atmosphere have long-s

136 The existence of hot hydrogen atoms in the upper thermosphere, which is the k

137 The hydrogen atoms in these clusters can be replaced by conv

138 es the smallest substituent on the alkene (a hydrogen atom) in the most sterically hindered position.

139 The hydrogen atom is considered to be an ideal coupling hand

140 earned about reaction dynamics involving one hydrogen atom, less is known about those processes where

141 ty contrasts with the typical description of hydrogen atom-like states (S, P, etc.) in the conduction

142 ls to basic heteroarenes, followed by formal hydrogen atom loss, have become widely known as Minisci-

143 ihydrogen dissociation on palladium islands, hydrogen atoms migrate from palladium to silver, to whic

144 The rate of hydrogen atom migration depends on the palladium-silver

145 At lower pressures, the hydrogen atoms move to an off-centre position, forming a

146 In the crystal, the NH hydrogen atom of 6 is disordered between the N(1) and N(

147 shown here to demonstrate that the 6'-pro-R-hydrogen atom of GenX2 is stereoselectively abstracted b

148 ic CH-pai interactions between the porphyrin hydrogen atoms of the helicate and an aromatic pendant g

149 Our work not only elucidates that ortho-hydrogen atoms of the pyrazine rings are preferentially

150 onded to a bent CO2 moiety on one side and a hydrogen atom on the other.

151 -adamantyl)-o-alkyl-acetophenones with gamma-hydrogen atoms on both the adamantyl and ortho aromatic

152 ound to a formate moiety on one side and two hydrogen atoms on the other.

153 Compound I can either (i) abstract an O-H hydrogen atom or (ii) be attacked by a nucleophilic hydr

154 ters investigated reveals the preference for hydrogen atom or proton abstraction in photoreactions an

155 y, followed by a sequential abstraction of a hydrogen atom or proton-coupled electron transfer.

156 Quantum tunneling of hydrogen atoms (or protons) plays a crucial role in many

157 nown about those processes where two or more hydrogen atoms participate.

158 ional theory calculations support up to 0.48 hydrogen atoms per formula unit of ([Formula: see text])

159 (pro), which allowed direct determination of hydrogen atom positions and, hence, protonation states i

160 uctures (0.9 A resolution or better) and the hydrogen atom positions in these structures were determi

161 equivalents are generated from complementary hydrogen atom precursors, with each alkane requiring one

162 eory calculations, we have demonstrated that hydrogen atoms preferentially occupy substitutional posi

163 e chromium catalyst sequentially transfers a hydrogen atom, proton, and electron from molecular hydro

164 The hydrogen atom reactivity difference between the trinucle

165 f the double bond's pi electrons followed by hydrogen atom rearrangement.

166 haracterization and atomic-scale tracking of hydrogen atoms reveal that the segregation of hydrogen a

167 ent protein family, showed a distribution of hydrogen atoms revealing protonation of the chromophore

168 mation and subsequent trapping with either a hydrogen atom source (PhSiH3 ) or an electron-deficient

169 orocarbinyl radical, reduction of which by a hydrogen atom source gives the alkyl chloride product.

170 lectron reductant, flavin semiquinone as the hydrogen atom source, and the enzyme as the source of ch

171 ic phase of LaH10 having cages of thirty-two hydrogen atoms surrounding each La atom.

172 Here we report the existence of non-thermal hydrogen atoms that are much hotter than the ambient oxy

173 ydroxide minerals often possess out-of-plane hydrogen atoms that form hydrogen bonding networks which

174 sts to promote the transfer of electrons and hydrogen atoms, this system performs direct hydroarylati

175 chain polymers with multiple substituents of hydrogen atoms through atomic mass modification.

176 ch are initiated by the formal addition of a hydrogen atom to a C[double bond, length as m-dash]C dou

177 tercepted by abundant alkene feedstocks or a hydrogen atom to provide a diverse array of difluoalkyla

178 Weak binding of hydrogen atoms to the 2H-MoS(2) basal plane renders MoS(

179 rogenation is that the active metal supplies hydrogen atoms to the host metal, where selective hydrog

180 palladium islands more efficiently supplying hydrogen atoms to the silver.

181 nded water OH groups are pointing with their hydrogen atom toward local hydrophobic sites consisting

182 en to hydrogen bond distance positioning the hydrogen atom towards the flavin N5 reactive center.

183 y 150, associated with an intramolecular 1,5-hydrogen atom transfer (1,5-HAT) in the decay of a PEGyl

184 sition of the radical via intramolecular 1,5-hydrogen atom transfer (1,5-HAT) that was observed in it

185 proach to radical hydrogenation: cooperative hydrogen atom transfer (cHAT), where each hydrogen atom

186 ates selective C-H functionalization via 1,5-hydrogen atom transfer (HAT) and enables net incorporati

187 rough the combination of photoredox-mediated hydrogen atom transfer (HAT) and nickel catalysis, we ha

188 We found that second hydrogen atom transfer (HAT) and second sequential proto

189 We report a combined photocatalytic and hydrogen atom transfer (HAT) approach for the light-medi

190 Hydrogen atom transfer (HAT) by (3)O(2) and HO(2)(*) fro

191 ocatalyst in combination with azide ion as a hydrogen atom transfer (HAT) catalyst, provides a direct

192 in the presence of eosin Y, which acts as a hydrogen atom transfer (HAT) catalyst.

193 prise, the mechanism suggests intermolecular hydrogen atom transfer (HAT) chemistry is at play, rathe

194 quinolinium, and isoquinolinium salts under hydrogen atom transfer (HAT) conditions, and an expanded

195 l class of alkene coupling reactions involve hydrogen atom transfer (HAT) from a metal-hydride specie

196 4 to 5 orders of magnitude slower than 3 in hydrogen atom transfer (HAT) from C-H bonds.

197 onstration of the oxidizing ability of S via hydrogen atom transfer (HAT) from TEMPO-H (2,2,6,6-tetra

198 The reaction is proposed to operate via hydrogen atom transfer (HAT) from the substrate to the p

199 ing scission experiments are consistent with hydrogen atom transfer (HAT) generation of a carbon-cent

200 romising new approach that utilizes computed hydrogen atom transfer (HAT) Gibbs free energy instead o

201 Because of the importance of hydrogen atom transfer (HAT) in biology and chemistry, t

202 Both anionic forms undergo only hydrogen atom transfer (HAT) mechanism with CH(3)OO.

203 is observed (k(H)/k(D) = 3.5), implicating a hydrogen atom transfer (HAT) mechanism.

204 the photoinduced electron transfer (ET) and hydrogen atom transfer (HAT) pathways between an anti-tu

205 Evaluation of polar effects in hydrogen atom transfer (HAT) processes is made difficult

206 Positional selectivity is dictated by a 1,5-hydrogen atom transfer (HAT) reaction by a pendent amide

207 in regioselectivity has been observed in the hydrogen atom transfer (HAT) reactions from 4-alkyl-N,N-

208 A kinetic study of the hydrogen atom transfer (HAT) reactions from a series of

209 A kinetic study of the hydrogen atom transfer (HAT) reactions from a series of

210 A kinetic study on the hydrogen atom transfer (HAT) reactions from the aliphati

211 e to both single electron transfer (SET) and hydrogen atom transfer (HAT) reactions, thus covering al

212 trast with the usual reactivity of TEMPOH by hydrogen atom transfer (HAT) to a single e(-)/H(+) accep

213 Radical hydrogenation via hydrogen atom transfer (HAT) to alkenes is an increasing

214 ses and also on new transformations, notably hydrogen atom transfer (HAT) triggered processes, which

215 g key steps: (i) beta C-H iodination via 1,5-hydrogen atom transfer (HAT), (ii) desaturation via I(2)

216 electron transfer (SET) processes, including hydrogen atom transfer (HAT), a Povarov-type reaction, a

217 ynamic and mechanistic investigations of the hydrogen atom transfer (HAT), radical adduct formation (

218 s rapidly with a panel of substrates via C-H hydrogen atom transfer (HAT), reducing 1 to [(PyPz)Fe(II

219 ediate 8 are detailed, enlisting late-stage, hydrogen atom transfer (HAT)-mediated free radical bond

220 ctron transfer (PCET) process as well as via hydrogen atom transfer (HAT).

221 ted reaction pathway support a metal hydride hydrogen atom transfer (MH-HAT) to generate a C-centered

222 Metal-hydride hydrogen atom transfer (MHAT) functionalizes alkenes wit

223 we present a direct observation of a double hydrogen atom transfer (tautomerization) within a single

224 ger of light-driven, decatungstate-catalysed hydrogen atom transfer and copper catalysis.

225 rategy, we herein report photoredox-mediated hydrogen atom transfer catalysis for the selective activ

226 ically distinct, metal-free borylation using hydrogen atom transfer catalysis(5), in which homolytic

227 ynergistic merger of photoredox, nickel, and hydrogen atom transfer catalysis.

228 ized triisopropylsilanethiol was used as the hydrogen atom transfer catalyst to afford a benzylic rad

229 koxyphthalimide-based oxidant and a chloride hydrogen atom transfer catalyst.

230 The unique reactivity of amidyl radicals in hydrogen atom transfer enables decarboxylative xanthylat

231 ruthenium nitrenoid species initiates a 1,5-hydrogen atom transfer followed by an immediate radical

232 ments rule out the alternative hypothesis of hydrogen atom transfer from a redox-active beta-diketona

233 that benzoyl-CoA reduction is initiated by a hydrogen atom transfer from a W(IV) species with an aqua

234 ributed to a radical reaction triggered by a hydrogen atom transfer from MeCHD to quinones, or, in th

235 est that this reaction is made possible by a hydrogen atom transfer from water that generates a Pd-hy

236 A 1,5-hydrogen atom transfer is followed by spontaneous 5-exo-

237 ed that from the thermodynamic point of view hydrogen atom transfer is the preferred mechanism in the

238 ak, while stepwise carboxylate oxidation and hydrogen atom transfer likely predominate for stronger C

239 bonds in the substrates was indicative of a hydrogen atom transfer mechanism.

240 toredox conditions using quinuclidine as the hydrogen atom transfer mediator.

241 ctivity is controlled by the predominant 1,5-hydrogen atom transfer of an amidyl radical generated in

242 Decarboxylative functionalization via hydrogen atom transfer offers an attractive alternative

243 in we demonstrate that a photoredox-mediated hydrogen atom transfer protocol can efficiently and sele

244 2))(+) cleaves H(2) at 25 degrees C in a net hydrogen atom transfer reaction, producing the dihydroge

245 undant aliphatic carbon-hydrogen bonds using hydrogen atom transfer reactions in which the bond-disso

246 s cluster with alkenes results in oxygen and hydrogen atom transfer reactions to form alcohol- and ke

247 By using a photoinduced hydrogen atom transfer strategy, this metal-free C(sp(3)

248 (H(2) ), serves as a competent precursor for hydrogen atom transfer to (t) Bu(3) ArO(.) .

249 The transformation connects metal-mediated hydrogen atom transfer to alkenes and Minisci addition r

250 erstood since the 1970s to proceed through a hydrogen atom transfer to NiOOH.

251 ination to form the photoproduct and reverse hydrogen atom transfer to regenerate the starting ketone

252 t provide a unique reagent system for formal hydrogen atom transfer to substrates.

253 , as evidenced by an assay based on phenolic hydrogen atom transfer to the stable free radical DPPH.

254 hane, ethane, propane, and isobutane through hydrogen atom transfer using inexpensive decatungstate a

255 acoordinate borinic ester, which accelerates hydrogen atom transfer with the quinuclidine-derived rad

256 echanisms of the photoredox-nickel-HAT (HAT: hydrogen atom transfer) catalyzed arylation and alkylati

257 of the major antioxidative mechanisms: HAT (Hydrogen Atom Transfer), SPLET (Sequential Proton-Loss E

258 ansition-metal-catalyzed C-H activation, 1,n-hydrogen atom transfer, and transition-metal-catalyzed c

259 ive site can control the radical terminating hydrogen atom transfer, enabling the synthesis of enanti

260 ccompanied by a change in the mechanism from hydrogen atom transfer, M(2+)(d(n)) O(*-) -> M(2+)(d(n))

261 c hypothesis characterized by intramolecular hydrogen atom transfer, radical fluorination, and ultima

262 constitutes the first example of asymmetric hydrogen atom transfer-initiated process.

263 ary radical generated upon chlorine-mediated hydrogen atom transfer.

264 ate and are consistent with rate-determining hydrogen atom transfer.

265 o the enzyme active site for stereoselective hydrogen atom transfer.

266 entually formed via a combination of thermal hydrogen-atom transfer (HAT) and proton-coupled electron

267 stingly, a divergence between intermolecular hydrogen-atom transfer (HAT) catalysis and intramolecula

268 catalytic processes-photoredox, enamine and hydrogen-atom transfer (HAT) catalysis-enables an enanti

269 ox catalyst, a Bronsted base catalyst, and a hydrogen-atom transfer (HAT) co-catalyst.

270 ne is proposed to undergo enantiodetermining hydrogen-atom transfer (HAT) during the C-H amination ev

271 generally two types of reactions occur: (a) hydrogen-atom transfer (HAT) from a donor to the peroxyl

272 Hydrogen-atom transfer (HAT) from a substrate carbon to

273 in these cases are characterized as either a hydrogen-atom transfer (HAT) or a concerted proton-coupl

274 rived nitrogen-centered radicals mediate 1,6-hydrogen-atom transfer (HAT) processes to guide gamma-C(

275 s is presumably initiated by metal-catalyzed hydrogen-atom transfer (MHAT) to 1,1-disubstituted or mo

276 canonical radical reactions-cobalt-mediated hydrogen-atom transfer and copper-promoted radical cyana

277 ia the combination of photoredox, nickel and hydrogen-atom transfer catalysis.

278 substrate complex triggers an intramolecular hydrogen-atom transfer followed by a highly stereocontro

279 d N-terminal amino group in combination with hydrogen-atom transfer from the Calpha positions of the

280 tep in the reaction cycle and is followed by hydrogen-atom transfer from the CE1-H group of trimethyl

281 ntributions in C-C bond formation reactions, hydrogen-atom transfer from water to radicals, and isome

282 e catalyst that promotes H(2) activation and hydrogen-atom transfer is described.

283 The hydrogen-atom transfer mechanism for C-H iodination allo

284 sequence of favorable electron, proton, and hydrogen-atom transfer steps that serve to break and ref

285 wed by 1) PMe3 attack on the nitride, 2) net hydrogen-atom transfer to form N-H bonds, or 3) C-H amin

286 Cl to concerted-proton/electron transfer (or hydrogen-atom transfer) for X = OMe, NMe(2) (data for X

287 t-bound enone substrate, 2) facilitating the hydrogen-atom transfer, and 3) providing the asymmetric

288 ilized to provide a lower-energy barrier for hydrogen-atom transfer.

289 inert C-H bonds through a strategy involving hydrogen-atom transfer.

290 nprecedented (for hybrid Pd-radical species) hydrogen atom-transfer event.

291 The developed hydrogen-atom-transfer methodology will be helpful in po

292 ers both a rationale for the relatively high hydrogen-atom-transfer reactivity of [Mn(IV)(O)(N4py)](2

293 ne) to IrN 1 proceeds through two successive hydrogen atom transfers (HAT) to 2 equiv of phenoxyl tha

294 The following 1,5-hydrogen atom translocation, intramolecular cyclization,

295 s is the first spectroscopic confirmation of hydrogen atom tunneling governing 1,2-H-shift reactions

296 conditions, and provides clear evidence for hydrogen atom tunneling in the H-isotopologue.

297 cays to the lower-energy trans conformer via hydrogen-atom tunneling through the torsional barrier, w

298 eral distinctive geometrical arrangements of hydrogen atoms vis-a-vis the heavier donor and acceptor

299 g a model that explicitly represents all non-hydrogen atoms, we simulated more than 120 spontaneous t

300 (resolution </= 1.8 A) and the positions of hydrogen atoms were generated using a computational meth