ライフサイエンスコーパス: alkoxide

1 cation) or a nucleophilic promoter (e.g., an alkoxide).

2 n electrophile (O-acylation of the resulting alkoxide).

3 ion occurs at the double bond allylic to the alkoxide.

4 quiv of lithium amide and 1 equiv of lithium alkoxide.

5 structure and reactivity of the nucleophilic alkoxide.

6 y chelation with an adjacent, chiral lithium alkoxide.

7 f a zinc catalyst to provide an allylic zinc alkoxide.

8 salts and an unusual C-O bond cleavage of an alkoxide.

9 ts to conjugated enals provides allylic zinc alkoxides.

10 on to aldehydes to generate (Z)-allylic zinc alkoxides.

11 es of reprotonation of the diastereomeric Pd-alkoxides.

12 on or separation of syn- and anti-beta-silyl alkoxides.

13 erated a mixture of syn- and anti-beta-silyl alkoxides.

14 become stronger for larger, more substituted alkoxides.

15 deliver allylic ruthenium(II) or osmium(II) alkoxides.

16 lytic zinc at a distance expected for a zinc alkoxide (1.96 A) and participate in a low-barrier hydro

17 carbonyl substrate to generate siloxyrhenium alkoxide 4, which, in turn, affords the silyl ether prod

18 e nucleophilic attack of a hindered tertiary alkoxide, a ring-closing metathesis reaction, and the Di

19 an alpha-boryl carbanion, deprotonation, and alkoxide addition to form an "-ate" complex.

20 d chiral ligands in the presence of Al-based alkoxides, afford tertiary propargyl alcohols efficientl

21 N-tert-butanesulfinyl alpha-halo imines with alkoxides afforded new N-tert-butanesulfinyl 2-amino ace

22 alopyranoside; reaction using a selection of alkoxides affords exclusively the 3-O-alkylidopyranoside

23 The use of alkoxide/alcohol system completely switches the reaction

24 bstitution patterns at boron (e.g., hydride, alkoxide, alkyl, and aryl substituents).

25 This alkoxide also reacts with a second aldehyde to form este

26 The solid-state structures of the alkoxides also confirmed the results from the pyridine d

27 t expansion of this family to include alkyl, alkoxide, amide, and ketimide ligands presents the oppor

28 ethylene]-2-phenyl-5-oxazolone precursors by alkoxides, amines, amino acid esters and aryl/alkyl Grig

29 ificant nucleophilic participation by the C2-alkoxide, an essentially cleaved glycosidic bond, and a

30 The combination of a titanium(IV) alkoxide and a siloxane allowed for the chemoselective r

31 Among the iron alkoxide and aryloxide catalysts evaluated, the iron phe

32 lymerization initiation steps show that zinc alkoxide and bis(trimethylsilyl)amido complexes insert C

33 epared by Suzuki coupling using conventional alkoxide and carbonate bases was </= 95%, as reported ea

34 Our computational results for the model alkoxide and potassium alkoxide systems show that the th

35 onrotatory product was also explored for the alkoxide and potassium alkoxide systems.

36 lthio)(het)arylmethylene]-5-oxazolo nes with alkoxides and a variety of primary aromatic/aliphatic am

37 e thermodynamic properties reported here for alkoxides and acid hosts differing in size and conjugate

38 e the result of the ability to activate both alkoxides and aldehydes using photons.

39 y a metal-free oxidative coupling of primary alkoxides and diaminopyrimidines with Schiff base format

40 res of mixed aggregates derived from lithium alkoxides and lithium acetylides were investigated as pa

41 with alkyl halides can be effected by metal alkoxides and provides a strategy for the construction o

42 neutral microwave conditions or nucleophilic alkoxides and the intermediate N-(arylacyl)benzotriazole

43 The synthesis of chiral aluminum and yttrium alkoxides and their application for lactide polymerizati

44 protonation of Pd-bound alcohol to form a Pd-alkoxide, and (4) beta-hydride elimination of Pd-alkoxid

45 destabilized by >/=10(8)-fold by the Ser102 alkoxide, and provide direct evidence for ground state d

46 Variations in the NHC, the imido, the alkoxide, and the noncoordinating anion revealed their i

47 Lithium halides, acetylides, alkoxides, and monoalkylamides form isostructural trilit

48 acids, hydroxy acids or peptides; a silicon alkoxide; and a metal acetate.

49 involves formation of a complex between the alkoxide anion and the oxoammonium cation in a pre-oxida

50 ere we show that CH bond weakening occurs in alkoxide anions as a consequence of hyperconjugation.

51 ect halogenation of the isovalent parent POV-alkoxide architecture, [V(6)O(7)(OC(2)H(5))(12)](-2) wit

52 pparent nucleophilicities of the substituted alkoxides are always much lower than those of the unsubs

53 ry alcohols, pre-equilibria favoring primary alkoxides are product-determining.

54 spectroscopy reveals that the lithium amino alkoxides are tetrameric.

55 The intermediate propargylic alkoxides are trapped in situ with acetic anhydride, whi

56 ctron transfer would imply that alkali metal alkoxides are willing partners in these electron transfe

57 to direct the self-assembly of a cerium(IV) alkoxide around the metal particles, followed by the con

58 aryl, arene, carbene, amide, imide, nitride, alkoxide, aryloxide, and oxo compounds, 4) describes adv

59 sensitivity of the different species to the alkoxide/aryloxide ratio, the compounds were determined

60 These reactions occur with KF or alkoxide as the additive, but mechanistic studies sugges

61 hanges are discussed in the context of amino alkoxides as chiral auxiliaries.

62 ity toward addition of primary and secondary alkoxides, as well as N-nucleophiles, in the presence of

63 response is due to protonation of a bridging alkoxide at lower pH values.

64 vity in the formation of silica from silicon alkoxides at neutral pH.

65 tion and propagation proceed via an external alkoxide attack on the coordinated monomer.

66 A series of zinc(II) and magnesium(II) alkoxides based upon a beta-diiminate ligand framework h

67 Titanium alkoxide-based alkyne-alkyne reductive coupling mediated

68 oro- and fluorobenzene, using 1 atm of H(2), alkoxide bases, and moderate temperatures (70-90 degrees

69 rast with the pathways proposed recently for alkoxide beta-hydrogen elimination involving direct elim

70 titive beta-hydrogen elimination of a nickel alkoxide, between the carbonyl carbon and either one of

71 mples of both a Pd(IV) NHC bond and a Pd(IV) alkoxide bond and serves as a precatalyst for C-H bond h

72 f the first lactide monomer into the tin(II) alkoxide bond is facile, with the induction period arisi

73 proceed via olefin insertion into an iridium-alkoxide bond, followed by rate-determining C-H reductiv

74 Removal of the Ser102 alkoxide by mutation to glycine or alanine increases the

75 ctrophilic cleavage of the other coordinated alkoxide by TFAA to produce the nonsymmetrical diester.

76 Here we report polylanthanide alkoxide cage complexes, and their doped diamagnetic ytt

77 udies of model complexes showed that a mixed alkoxide/carboxylate aluminum intermediate preferentiall

78 An alkoxide-catalyzed directed diboration of alkenyl alcoho

79 structure of the chloride-functionalized POV-alkoxide cluster was established by infrared, electronic

80 functionalized polyoxovanadate-alkoxide (POV-alkoxide) cluster, which can serve as a molecular model

81 transfer to afford the dinuclear dicationic alkoxide complex [(((i)Pr(2)-ATI)Al(mu-O(i)()Pr))(2)][B(

82 The activity of an yttrium alkoxide complex supported by a ferrocene-based ligand w

83 than oxygen atom insertion, resulting in the alkoxide complex Th(OCH2NMe2)(L3) (4).

84 t precursor lead to a cationic iron(III) bis-alkoxide complex that was completely inactive toward lac

85 also explored, which led to the uranium(IV) alkoxide complex U(OCPh3)4(DME) (3.DME).

86 rate-determining sigma-bond metathesis of an alkoxide complex with the silane, subsequent coordinatio

87 tide polymerization behavior of a new Zn(II) alkoxide complex, (L(1)ZnOEt)(2) (L(1) = 2,4-di-tert-but

88 ygen of the kappa(1)-hydroperoxo produces an alkoxide complex, which undergoes protonolysis to yield

89 the reduced and oxidized forms of an indium alkoxide complex.

90 ketone into the Fe-H bond to regenerate the alkoxide complex.

91 Similarly, the analogous alkoxide complexes [Pd3 (mu(2) -OR)(OAc)5 ] (3) are easi

92 Chiral iron alkyl and iron alkoxide complexes bearing boxmi pincers as stereodirect

93 ate additions proceed through alkylmagnesium alkoxide complexes for all but the more substituted alke

94 The activity of several group 4 metal alkoxide complexes supported by ferrocene-based ligands

95 A series of chiral binaphthyl titanium alkoxide complexes were synthesized.

96 ted iridium halide or olefin-ligated iridium alkoxide complexes.

97 de and other cyclic esters by discrete metal alkoxide complexes.

98 Bis(imino)pyridine iron bis(alkoxide) complexes have been synthesized and utilized i

99 d metallocene and classical alkyl, amide, or alkoxide compounds as well as established carbene, imido

100 ed water, (13)C CP-MAS NMR detects a surface alkoxide consistent with that of TG.

101 ated but unprotonated leaving group forms an alkoxide coordinated to magnesium ion B.

102 the related thiolate compounds than in their alkoxide counterparts.

103 oxidation of alcohols to aldehydes, a Cu(II)-alkoxide (Cu(II)-OR) intermediate is believed to modulat

104 ligands form in reactions between copper(II) alkoxides [Cu(II)]-O(t)Bu and B(C6F5)3.

105 phenylacetylide (RCCLi) and a vicinal amino alkoxide derived from camphor (R*OLi) in THF/pentane aff

106 ediate featuring a unique Ni(2)(OR)(2) (OR = alkoxide) diamond-like core complemented by a mu-iodo br

107 An in situ alkoxide directed cyclopropanation proceeds with the for

108 large fragment union exploiting a Micalizio alkoxide-directed alkyne-alkene coupling tactic.

109 ith a TMS-alkyne) followed by regioselective alkoxide-directed coupling with the enyne, stereoselecti

110 intermediates are then subjected to in situ alkoxide-directed cyclopropanation to provide cyclopropy

111 to representing the first application of the alkoxide-directed metallacycle-mediated hydrindane-formi

112 Recently a collection of alkoxide-directed Ti-mediated [2 + 2 + 2] annulation rea

113 ereodefined dihydroindanes is described from alkoxide-directed Ti-mediated cross-coupling of internal

114 ular quaternary center that is a hallmark of alkoxide-directed titanium-mediated [2 + 2 + 2] annulati

115 The process builds on our alkoxide-directed titanium-mediated alkyne-alkyne coupli

116 ified Negishi cross-coupling or an efficient alkoxide-directed titanium-mediated alkyne-alkyne reduct

117 lectivity, defining the important role of an alkoxide directing group located delta to preformed tita

118 lithium, or potassium allylic or propargylic alkoxides directly provides allylic or allenic halides.

119 more complex systems containing a potassium alkoxide (e-f), the barrier of the allowed conrotatory r

120 The syn-beta-silyl alkoxide eliminated stereospecifically at -78 degrees C

121 ysts, or binuclear mechanisms and shows that alkoxide elimination can follow pathways similar to thos

122 hydride intermediate followed by rapid beta-alkoxide elimination.

123 the simple modification of the amide and the alkoxide employed.

124 arenes or heteroarenes suggests that the C4-alkoxide (enol form of uracil) facilitates coupling by p

125 ert vitamin K, in the vitamin K cycle, to an alkoxide-epoxide form which then reacts with CO(2) and g

126 e reductase (VKOR) is thought to convert the alkoxide-epoxide to a hydroquinone form.

127 o nucleophilic attack by F(-), triflate, and alkoxide/ether (from THF).

128 the carboxylate ligand to the corresponding alkoxide followed by entering the catalytic cycle for th

129 to a conjugated enal to generate an allylic alkoxide followed by tandem diastereoselective iodo-, br

130 kinetic data indicate that covalently bound alkoxides form C-C bonds in the kinetically relevant ste

131 Hindered (tertiary) alkoxides form higher aggregates (possibly hexamers), wh

132 At low [(-)-sparteine], Pd-alkoxide formation is proposed to be rate limiting, whil

133 ce in the stability of the diastereomeric Pd-alkoxides formed and a kinetic beta-hydride elimination

134 Equilibrium constants for alkoxides formed by protonation of n-hexene increased sl

135 ly exchange B-alkyl or B-aryl moieties for B-alkoxide fragments.

136 Halide or alkoxide free yttrium-salen complexes are excellent cata

137 Tertiary alkoxides (from isobutene) within larger voids (MOR, HPW

138 tion of fluoroalkenes 2a and 2b with allylic alkoxides gave products arising from Claisen rearrangeme

139 by nucleophilic ring closure of propargylic alkoxides generated by lithium acetylide addition to alp

140 n of the enantiopure monoprotected copper(I) alkoxide, generated from (S)-5a, with the enantiopure al

141 hioureas by sodium, potassium or imidazolium alkoxides generates a hydrogen-bonded alcohol adduct of

142 Controlled thermolysis of the deposited alkoxide gives the metal a mixed oxide-alkoxide layer, w

143 ation, and the presence of four highly donor alkoxide groups in a plane, which breaks the degeneracy

144 temperature, inductive and steric effects of alkoxide groups on the diameter, length, composition, du

145 aining insoluble lithium hydride and lithium alkoxide impurities, although yields are significantly l

146 hesized by controlled hydrolysis of titanium alkoxide in reverse micelles in a hydrocarbon solvent.

147 ts demonstrate an unexpected role of lithium alkoxide in the carbon-carbon bond-forming step of the r

148 is of aromatic sulfoxides in the presence of alkoxides in alcoholic solvents provides a photochemical

149 ate the preferred oxidation states of nickel alkoxides in an operative catalytic cycle, thereby provi

150 talytic system comprised of group (IV) metal alkoxides in conjunction with additives including 1-hydr

151 nd C attack, as well as reactions with metal alkoxides in nonpolar solvents, where oxygen attack is b

152 to aldehydes and ketones generates magnesium alkoxides in situ that eliminate MgO upon addition of Me

153 nucleophilicities of a series of substituted alkoxides in the gas phase.

154 arenes, triggered by the use of alkali metal alkoxides in the presence of an organic additive, are re

155 onstants are similar on MOR and HPW for each alkoxide, indicating that binding is insensitive to acid

156 The reaction is found to occur by alkoxide-induced deborylation and generation of a boron-

157 tones undergo lithium hydroxide- and lithium alkoxide-induced fragmentation reactions to provide bute

158 and beta-valerolactone (BVL) using the zinc alkoxide initiator (BDI-1)ZnO(i)()Pr [(BDI-1) = 2-((2,6-

159 hat utilize a catalytic zinc to stabilize an alkoxide intermediate and NAD(P)(+) as the organic cofac

160 The resulting allylic zinc alkoxide intermediate is then epoxidized in situ using e

161 r the presence of a covalently linked Cu(II)-alkoxide intermediate with a quartet spin state responsi

162 ), the isolation of the catalytically active alkoxide intermediate, and DFT-modeling of the whole rea

163 d the nitroxyl radical of TEMPO via a Cu(II)-alkoxide intermediate.

164 ive elimination step) to occur via a Ni(III) alkoxide intermediate.

165 of starting triflates 1 to form tetrahedral alkoxide intermediates C, followed by Grob-type fragment

166 In cases where the zinc alkoxide intermediates contain two different allylic ole

167 ation rates were limited by isomerization of alkoxide intermediates on bifunctional metal-acid mixtur

168 MIB-based zinc catalyst to generate allylic alkoxide intermediates.

169 generates the key B(pin) substituted allylic alkoxide intermediates.

170 ate the epoxides, and onium halides or onium alkoxides involving either ammonium, phosphonium, or pho

171 rmation of a Michael adduct, followed by the alkoxide ion mediated rearrangement of the intermediate.

172 direct polycondensation of a wide variety of alkoxide, ionic, and organometallic precursors to the co

173 ments of 13-15 and (+)-23 by fluoride and by alkoxide ions are discussed.

174 loride ligand, however, leads to a potassium alkoxide-iridate species as the deactivated form of this

175 The resulting activated alkoxide is correctly positioned for catalysis through e

176 n the nucleofugality of the amidate once the alkoxide is formed and not in the pKa of the hydroxyl gr

177 which the beta-hydrogen of a palladium-bound alkoxide is transferred directly to the free oxygen of t

178 Alkoxide isomerization barriers were more sensitive to D

179 sited alkoxide gives the metal a mixed oxide-alkoxide layer, which reacts with solutions of phosphoni

180 side reactions are slowly catalyzed by zinc alkoxides, leading to degradation of the polymer.

181 e site-to stabilize the negative C-4a-flavin alkoxide leaving group upon heterolytic fission of the p

182 since structural characterization shows the alkoxide ligand bridging the two metals and the carbene

183 oordinated THF, then attack of the resultant alkoxide ligand on a second coordinated THF, nucleophili

184 THF, nucleophilic addition of the resultant alkoxide ligand to the coordinated carboxylic acid (an i

185 ) catalysts initiate polymerization with one alkoxide ligand, while iron bis(alkylalkoxide) catalysts

186 four-carbon TMM skeleton to a dianionic bis(alkoxide) ligand containing a symmetrically substituted

187 h increasing number of fluorine atoms on the alkoxide ligands for both molecular and supported cataly

188 The stronger pi donation of the alkoxide ligands is proposed to enhance back-bonding to

189 The alkoxide ligands render the disproportionation reaction,

190 catalysts initiate polymerization with both alkoxide ligands.

191 pyrrolidine fragment to form an alpha-amino alkoxide-LiHMDS mixed dimer shown to be a pair of confor

192 Such concerted process allows the TSA, an alkoxide-like inhibitor, to be stabilized through a mech

193 nds to the Si nanocrystal surface through an alkoxide linkage and provides steric stabilization throu

194 ese enzymes occurs via a hydroxyl rebound or alkoxide mechanism and highlighted the need to understan

195 thyl-3beta-p-tolyl-tropane intermediate with alkoxides, metal imides, or amines was found to lead not

196 actions involving the ammonium group and the alkoxide moiety formed upon 1,2-addition of the proline

197 not compatible with the easily modifiable B-alkoxide moiety.

198 rticles of aluminum or magnesium alloys into alkoxide nanowires of tunable dimensions, which are conv

199 catalyst, half of an equivalent of an added alkoxide not only facilitates but also accelerates the c

200 erates the use of sterically hindered sodium alkoxide nucleophiles.

201 Such alkoxide NWs can be easily converted in air into ceramic

202 transformation of bulk Mg-Li alloys into Mg alkoxide NWs is demonstrated without the use of catalyst

203 hermodynamically much more favorable for the alkoxide obtained from the oxirane than for the thiolate

204 rearrangement of both tertiary and secondary alkoxides occurs under both FTMS and FA conditions.

205 morpholine), PO(OEt)(2), sulfanyl (SBu- t), alkoxide (OEt, OMe), and CN.

206 cal 3-acetate or carbonate with the zinc(II) alkoxide of acceptors establishes the glycosidic linkage

207 ggest rate-limiting condensation to form the alkoxide of homocitryl-CoA, followed by hydrolysis to gi

208 -epoxy N-sulfonyl hydrazones-directed by the alkoxide of the 1-azo-3-alkoxy propenes formed in situ v

209 Zr(H)Cl can react with the zinc or magnesium alkoxides of propargylic alcohols to generate allenes in

210 Ti-catalyzed olefin polymerization, chelated alkoxide olefin complexes [eta(5): eta(1)-C(5)R(4)SiMe(2

211 occur as alkyl bromides are transformed into alkoxides on Mo(110)-(1 x 6)-O.

212 Rearrangement reactions of C4-alkoxides on O-covered Mo(110) have been studied using t

213 six dianionic subunits and two monoanionic (alkoxide-only) subunits.

214 osed to occur either directly from the metal alkoxide or indirectly, following reaction of the alkoxi

215 aryl halide as the coupling partner, lithium alkoxide or K 3PO 4 base, and DMF, DMPU, or mixed DMF/xy

216 )-mu,mu'-(LL)2, where X is either a bridging alkoxide or phenylthiolate group and LL is 4,4'-bipyridi

217 ex and native AAP are identical (3.5 A) with alkoxide oxygen atom distances of 2.1 and 1.9 A from Zn1

218 The alkoxide oxygen of bestatin bridges between the two Zn(I

219 Chiral dimeric tridentate NHC-amidate-alkoxide palladium(II) complexes, 3a and 3b, effected ox

220 avior of those compounds comprising the same alkoxide (Ph2HCO-) in polymerizations of -caprolactone (

221 monochloride-functionalized polyoxovanadate-alkoxide (POV-alkoxide) cluster, which can serve as a mo

222 matrix in the course of its creation from an alkoxide precursor via hydrolytic polycondensation react

223 of diphenyldiazomethane with the cobalt bis(alkoxide) precursor Co(OR)2(THF)2.

224 olysis and condensation rates of the silicon alkoxide precursors on pH.

225 chip' hydrolysis approach from soluble metal alkoxide precursors, which affords unprecedented high fi

226 the high reactivity of the commonly employed alkoxide precursors.

227 the olefin is equally effective for allylic alkoxides prepared by nucleophilic addition, deprotonati

228 in acetonitrile solution affords the Fe(III)-alkoxide product [(tpa(Mes2MesO))Fe(III)](-) resulting f

229 In contrast, lithium alkoxide-promoted fragmentation results in predominantly

230 An alkoxide-promoted method for the synthesis of ketones fr

231 These data and a dependence of alkoxide racemization on [PPh(3)] showed that the elemen

232 The dependence of rate, isotope effect, and alkoxide racemization on phosphine concentration reveale

233 , involving beta-H elimination from a nickel alkoxide rather than cleavage of the Ni-O bond by H(2).

234 ) hydride 4a reacts with PhCHO to afford the alkoxide Re(O)Cl2(OCH2Ph)(PPh3)2 (6a) with kinetic depen

235 kynes in the presence of silane and titanium alkoxide reductants provides direct access to skipped di

236 These weakly held basic alkoxides render Cu surfaces able to mediate C-C and C-O

237 tiating alkoxide with more electron-donating alkoxides resulting in faster polymerization rates.

238 with the excess lithium acetylide and a 1:3 (alkoxide-rich) mixed tetramer.

239 cetylide (RCCLi), a (+)-carene-derived amino alkoxide (ROLi), and lithium hexamethyldisilazide (LiHMD

240 Alkoxide salts are able to activate substrates with high

241 Co, Fe, Mn, Cr) with 2 equiv of alpha-imino alkoxide salts K(RR'COCNtBu) (R = Me, tBu; R' = iPr, tBu

242 This set of alkoxides serves as an ideal model system for studying n

243 proposed to be opposite the pseudoephedrine alkoxide side chain.

244 The metal alkoxide sites can be obtained stoichiometrically while

245 hium enolates, phenolates, carboxylates, and alkoxides solvated by N,N,N',N'-tetramethylethylenediami

246 t, the alcohol substrate is activated to its alkoxide species by the removal of the hydroxyl proton i

247 ommon, and a secondary cycle involving a bis-alkoxide species is avoided, thus explaining the lack of

248 e ion from the alpha-carbon of the chelated, alkoxide species to the N(5) atom of the enzyme-bound fl

249 ntial to design host-guest pairs that direct alkoxide species toward specific products.

250 ligand substitution to generate a palladium-alkoxide species, (3) reversible dissociation of pyridin

251 f the group that deprotonates choline to the alkoxide species, as indicated by pH profiles of the ste

252 mprises in situ generation of an active PdOR alkoxide species, double vinyl ether insertion to genera

253 on of a C(benzylic)-O bond to generate an Fe-alkoxide species, which is observed in the AsqJ crystal

254 hen reverting to the oxidized enzyme-choline alkoxide species.

255 formed by beta-hydride elimination from a Ru-alkoxide species.

256 rnover rates for mixed alkenes give relative alkoxide stabilities; the respective adsorption constant

257 nsights into the role played by reactant and alkoxide structure.

258 ance between the alpha-carbon of the choline alkoxide substrate and the N(5) atom of the enzyme-bound

259 Metal alkoxides, such as NaOt-Bu or Ti(OBu)4, can initiate acy

260 results for the model alkoxide and potassium alkoxide systems show that the thermally allowed electro

261 also explored for the alkoxide and potassium alkoxide systems.

262 sts bearing one triflate and one fluorinated alkoxide than for catalysts bearing two triflate ligands

263 The rearrangement product contains a boron alkoxide that remains unchelated by either carbonyl.

264 rignard reagent, generates an alkylmagnesium alkoxide that triggers conjugate addition.

265 d spectroscopic analysis of a series of zinc alkoxides that incorporate specific structural mutations

266 transfer of primary, secondary, or tertiary alkoxides, the latter involving attack on neopentyl oxyg

267 s products of monosubstitution by hydroxide, alkoxide, thiolate, enolate, and amine nucleophiles.

268 complexes of transition metals with amides, alkoxides, thiolates, silyl groups or boryl groups.

269 energy than hydrogen transfer from a Cu(II)-alkoxide to a coordinated nitroxyl species.

270 volving hydrogen-atom-transfer from a Cu(II)-alkoxide to a nitroxyl radical is higher in energy than

271 nvergent coupling, by exposure of an allylic alkoxide to a preformed Ti-imine complex, occurs with al

272 p followed by rate-limiting breakdown of the alkoxide to form aldehyde and amidate (E1cB-like).

273 xide, and (4) beta-hydride elimination of Pd-alkoxide to form ketone product and a Pd-hydride.

274 the exchange of one chloride ligand with an alkoxide to generate the active precatalyst.

275 ing-opening possibilities of the cyclobutene alkoxide to give the product: (1) thermally allowed conr

276 tates further intramolecular addition of the alkoxide to the aromatic ring wherein charge on the arom

277 d to occur through cyclization of an alcohol/alkoxide to the recently forged C(sp(3))-I bond.

278 eaction proceeds via initial addition of the alkoxide to the sulfoxide.

279 Nucleophilic addition of alkoxide to these N-arylquinazolinium salts provides fun

280 , respectively, or treated with titanium(IV) alkoxides to give the epoxy alcohols 26 and 27.

281 scern whether rearrangement of either of the alkoxides to their corresponding enolates occurs.

282 (18-crown-6)(THF)2][CPh3] (5), and the U(IV) alkoxide, [U(OCPh3)(NR2)3] (4).

283 hedrates and norcarane-derived lithium amino alkoxides used to effect highly enantioselective 1,2-add

284 a variety of 2-deoxy-sugar-derived anomeric alkoxides using challenging secondary triflates as elect

285 ive an E olefin, whereas the anti-beta-silyl alkoxide was unreactive.

286 are compatible with the presence of lithium alkoxides was found to be crucial to accommodate a broad

287 Palladium alkoxides were synthesized from secondary alcohols that

288 clopropyl alcohols, the intermediate allylic alkoxides were treated with TMSCl/Et(3)N to generate int

289 When alkoxides were used as nucleophile, only the rearranged

290 chloride or carboxylate) and an endo polymer alkoxide which can ring-open an adjacent cobalt-coordina

291 ldehydes generates the requisite dienyl zinc alkoxides, which are then subjected to in situ cycloprop

292 ide or indirectly, following reaction of the alkoxide with a solvent or additive.

293 sensitive to the identity of the initiating alkoxide with more electron-donating alkoxides resulting

294 ol boronic ester followed by trapping of the alkoxide with TFAA leads to an intermediate allyl borini

295 that the stronger bonding interaction of the alkoxide with the Fe relative to that of thiolate increa

296 The use of a single-source, bimetallic alkoxide with the vapor diffusion of a hydrolytic cataly

297 DFT-derived formation free energies for alkoxides with different framework attachments and backb

298 ribe an effective catalytic system combining alkoxides with thioureas that catalyses rapid and select

299 lly converted to either lithium or magnesium alkoxides, with the incorporated metals anchored far fro

300 fusion and selective condensation of silicon alkoxides within microphase-separated block copolymer te