ライフサイエンスコーパス: epoxidation

1 ies by detoxifying trichothecenes through de-epoxidation.

2 ion, cyclic ketalization, and regioselective epoxidation.

3 roxylation and an organocatalytic double Shi epoxidation.

4 16 hydroxylation is likely to precede C12,13 epoxidation.

5 , oxidative cleavage was observed instead of epoxidation.

6 f Ti-OOH intermediates, or the mechanism for epoxidation.

7 lite formation via arene oxidation and 10,11-epoxidation.

8 the cause of the high enantiospecificity of epoxidation.

9 n FAD C(4a)-hydroxide product of the styrene epoxidation.

10 ide highly efficient catalysts for propylene epoxidation.

11 rted on silicates is investigated for olefin epoxidation.

12 n to be an effective catalyst for asymmetric epoxidation.

13 , largely determine the stereoselectivity of epoxidation.

14 nd d-mannose, largely favor alpha- over beta-epoxidation.

15 been little explored outside of nucleophilic epoxidation.

16 orhabdus luminescens that catalyzes stilbene epoxidation.

17 ble of generating initiators for cyclooctene epoxidation.

18 ase the reactivity and selectivity of olefin epoxidation.

19 by an in situ regio- and diastereocontrolled epoxidation.

20 eduction and a selective homoallylic alcohol epoxidation.

21 gh-spin Fe(IV)-oxo intermediate to carry out epoxidation.

22 y for various dioxirane-catalyzed asymmetric epoxidations.

23 ectivity in organocatalytic enantioselective epoxidations.

24 re similar to those for Ti(IV)SiO2-catalyzed epoxidations.

25 ronments, the rate constants for cyclohexene epoxidation (323 K, 0.05 mM Ti(IV), 160 mM cyclohexene,

26 Their epoxidation afforded epoxides, which, in the presence of

27 ls using an enantioselective organocatalytic epoxidation and a double C(sp(3))-H activation as key st

28 Key synthetic transformations included a Shi epoxidation and an efficient cascade cyclization initiat

29 sponses such as xanthophyll cycle pigment de-epoxidation and antioxidant levels, as well as altering

30 riple bonds followed by Sharpless asymmetric epoxidation and boron-directed double ring-opening with

31 ructions, enantioselective Katsuki-Sharpless epoxidation and cationic polycyclization reactions.

32 by stereoselective transformations including epoxidation and cyclopropanation.

33 -ristosaminide, employing diastereoselective epoxidation and dihydroxylation, respectively, of alkyl

34 sly set via catalytic asymmetric homoallylic epoxidation and elaborated via regioselective epoxide-ri

35 structural view for stereoselective stilbene epoxidation and functionalization in an invertebrate ani

36 We compare turnover rates for 1-octene epoxidation and H(2)O(2) decomposition over a series of

37 present smaller enthalpic barriers for both epoxidation and H2O2 decomposition reactions.

38 roup IV and V materials catalyze cyclohexene epoxidation and H2O2 decomposition through largely ident

39 Using a sequential epoxidation and hydrogenation of crotonic acid leads to

40 highly enantioselective Weitz-Scheffer-type epoxidation and hydroperoxidation reactions of alpha,bet

41 que exchange back to TamI enables successive epoxidation and hydroxylation to afford, respectively, t

42 formations, such as the Sharpless asymmetric epoxidation and Jacobsen hydrolytic kinetic resolution,

43 eactions including asymmetric hydrogenation, epoxidation and lithiation.

44 argylic alcohol (S)-6 followed by asymmetric epoxidation and opening of propargylic epoxy alcohol ant

45 In both cases stereoselective epoxidation and opening of the aziridine ring with hydra

46 derived from (all-E)-beta-carotene following epoxidation and oxidative cleavage.

47 etone followed by subsequent stereoselective epoxidation and regioselective cyclization to afford the

48 Diastereoselective epoxidation and regioselective ring-opening methods were

49 ns were prepared by the Sharpless asymmetric epoxidation and Sharpless asymmetric dihydroxylation fol

50 y nature, enantioselective dihydroxylations, epoxidations and other oxidations of unsaturated hydroca

51 es can influence rates and selectivities for epoxidation (and other reactions) in zeolite catalysts.

52 with that expected for a peroxide-catalyzed epoxidation, and acid-quenched samples recovered at defi

53 Dehydrogenation, epoxidation, and demethylation of the latter afforded 1.

54 talled by sequential alkyne hydrosilylation, epoxidation, and Fleming-Tamao oxidation.

55 The Baeyer-Villiger rearrangement, epoxidation, and hydroxylation are included, and biologi

56 rivatization methods, including ozonization, epoxidation, and hydroxylation, have been used to genera

57 cross-metathesis, regio- and stereoselective epoxidation, and regioselective reductive epoxide openin

58 s silyl enol ether formation, Shi asymmetric epoxidation, and then regio- and stereospecific addition

59 ess kinetic resolution, Sharpless asymmetric epoxidations, and intramolecular and intermolecular epox

60 o presented that uses a Sharpless asymmetric epoxidation as a key step.

61 These studies confirm the value of C-22,23 epoxidation as an effective strategy for increasing the

62 g a double nucleophilic substitution and Shi epoxidation as key steps.

63 n-1-ols via two complementary procedures for epoxidation as the key step.

64 n of Glu(183) is important for CPO-catalyzed epoxidation as was postulated previously based on experi

65 er trimers are more active and selective for epoxidation because of the open-shell nature of their el

66 However, stilbene epoxidation biosynthesis and its biological roles remain

67 osomes, difluoro analogue 5b underwent 10,11-epoxidation but gave no arene oxidation.

68 mary alkenoic acid amides also underwent the epoxidation but gave the respective products in lower en

69 ed hydroxyanisole inhibited CYP2S1-catalyzed epoxidation by 100%, suggesting that epoxidation proceed

70 allowed earlier work of de Visser on olefin epoxidation by diiron complexes and QM-cluster studies o

71 fold decrease in the activation of vitamin K epoxidation by Glu.

72 n bulk silver surfaces with direct propylene epoxidation by molecular oxygen have not resolved these

73 Direct propylene epoxidation by O2 is a challenging reaction because of t

74 xidation over the kinetically favored alkene epoxidation by trapping high-energy intermediates and ca

75 roxyl function at one terminus, the internal epoxidation can be directed at the double bond of the po

76 This observation suggests that for olefin epoxidation catalysis using Lewis acids as catalyst and

77 culations of the transition state for olefin epoxidation catalysis, using molecular analogs of the op

78 queous H2O2 oxidant and the highly selective epoxidation catalyst Bu(cap)TaSBA15 were studied.

79 en devoted to the immobilization of discrete epoxidation catalysts onto solid supports due to the pos

80 Olefin epoxidation catalyzed by methyltrioxorhenium (MTO, CH3Re

81 The molecular basis of epoxidation catalyzed by nonheme-iron enzymes is much le

82 Herein, we present a detailed study on epoxidation catalyzed by the nonheme iron(II)- and 2-oxo

83 alytic oxidation reactions--such as ethylene epoxidation, CO oxidation, and NH(3) oxidation--at lower

84 ric transformations including hydrogenation, epoxidation, cyclopropanation, and aziridination reactio

85 onylation reactions, we developed a two-step epoxidation/deoxygenation process that results in overal

86 sequently characterized as hydroxylation and epoxidation derivatives of fatty acids, using gas chroma

87 ogues, a new synthetic method for asymmetric epoxidation, developed in our laboratories, was employed

88 face of the ring scaffold, an enhancement of epoxidation diastereoselectivity was not observed, while

89 Current routes of olefin epoxidation either involve hazardous reagents or generat

90 worth-Emmons macrocyclization and a directed epoxidation/elimination sequence.

91 The first example of a Corey-Chaykovsky epoxidation employing amides as substrates is described.

92 building blocks, including a novel Sharpless epoxidation/enzymatic kinetic resolution of stannane-con

93 nd for the four-membered analogues Sharpless epoxidation, epoxide ring-opening (azide), and Mitsunobu

94 The same sequence employing an epoxidation/epoxide opening in place of dihydroxylation

95 A long-known one-pot epoxidation/epoxide ring-opening/pinacol-pinacolone rear

96 SBA-15-[Mn(II)(TPA)]-catalyzed epoxidation exhibits a systematic dependence on surface

97 ngs and features a highly diastereoselective epoxidation/fluoride-mediated fragmentation sequence for

98 diazotization, elimination, stereoselective epoxidation, fluorination, and oxidation-reduction seque

99 A subsequent stereoselective epoxidation followed by a mild formamide reduction enabl

100 ropyran was constructed by a stereoselective epoxidation followed by a regioselective epoxide opening

101 yrone by aldol reaction with 2,4-hexadienal, epoxidation followed by cyclization, and epimerization o

102 derivatization-based strategy, MELDI (mCPBA Epoxidation for Lipid Double-bond Identification), which

103 for a kinetically driven reaction, ethylene epoxidation, giving rise to a 20-fold selectivity enhanc

104 alt organocatalysts effective for asymmetric epoxidation has been developed incorporating an addition

105 tact tomato plants is proposed that involves epoxidation, hydrolysis, hydroxylation, ring contraction

106 calonolides were epoxidized and in each case epoxidation improved potency.

107 trate results in diminishment of the rate of epoxidation in all cases.

108 ygen atom transfer reactions, such as olefin epoxidation, in the presence of a small amount of proton

109 rovide insights into the mechanism of olefin epoxidation, including an approximate first-order depend

110 here is the first on-demand electrochemical epoxidation incorporated into the standard nano-electros

111 roxylation lowers graphane's band gap, while epoxidation increases the gap.

112 copy was also used to identify a Ta(V)-based epoxidation intermediate, proposed to be a Ta(V)(eta(2)-

113 ptually new strategy featuring an asymmetric epoxidation-intramolecular epoxy-ring-opening Friedel-Cr

114 zymatic desymmetrization, substrate-directed epoxidation, Ireland-Claisen rearrangement, and diastere

115 The selectivity toward epoxidation is shown to stem from a combination of inher

116 onversion and degradation processes included epoxidation, isomerization, and deesterification.

117 Asymmetric epoxidation, kinetic resolution, and desymmetrization ha

118 nd rate equation may be used to describe the epoxidation kinetics, which are similar to those for Ti(

119 ingae protein was determined to catalyze the epoxidation of ( S)-HPP to fosfomycin and the oxidation

120 eme iron enzyme that catalyzes the oxidative epoxidation of (S)-2-HPP in the biosynthesis of the anti

121 ear iron enzyme that catalyzes the oxidative epoxidation of (S)-2-hydroxypropylphosphonic acid ((S)-H

122 that uses dioxygen to catalyze the oxidative epoxidation of (S)-2-hydroxypropylphosphonic acid (S-HPP

123 The facial selectivity of the first epoxidation of 1,3-disubstituted and trisubstituted alle

124 y of transition structures available for the epoxidation of 2-methyl-2-butene with oxaziridines.

125 Epoxidation of 5 afforded physachenolide C (6) with high

126 CYP726A16 catalyzed 7,8-epoxidation of 5-keto-casbene and CYP726A15 catalyzed 5-

127 synthesis of L and Z continued, followed by epoxidation of A and Z but not of L.

128 The rapid switch-on/off electro-epoxidation of a single sample, the low sample consumpti

129 The first direct epoxidation of acridine on the edge positions is reporte

130 ine ligands enables the catalytic asymmetric epoxidation of acyclic beta,beta-disubstituted enones, w

131 lication of isothiocineole to the asymmetric epoxidation of aldehydes and the aziridination of imines

132 astereo- and enantioselective method for the epoxidation of aldehydes with alpha-diazoacetamides has

133 eracid, is a suitable reagent to perform the epoxidation of alkenes 1 in supercritical carbon dioxide

134 atalytic systems for cis-dihydroxylation and epoxidation of alkenes, based on atom economic and envir

135 tified as an improved organocatalyst for the epoxidation of alkenes.

136 iral oxiranes derived from Katsuki-Sharpless epoxidation of allylic alcohols as initiating groups for

137 Asymmetric V-catalyzed epoxidation of allylic alcohols can be carried out in wa

138 Asymmetric epoxidation of allylic and homoallylic amine derivatives

139 450 (P450) 1A2 was found to catalyze the 5,6-epoxidation of alpha-naphthoflavone (alphaNF), 1-hydroxy

140 iary C-H bond under conditions that minimize epoxidation of an alkene.

141 Combined, our results suggest that epoxidation of anandamide by P450s to form 5,6-EET-EA re

142 Direct epoxidation of aromatic nuclei by cytochrome P450 monoox

143 various fatty acid hydroperoxides to support epoxidation of BaP-7,8-diol at a much higher rate than w

144 nd versatile method for the enantioselective epoxidation of both tertiary allylic and homoallylic alc

145 The facial selectivity in the DMDO epoxidation of carbohydrate-based oxepines derived from

146 Epoxypyrrolidinones are available by epoxidation of carboxamide-activated bicyclic lactam sub

147 The epoxidation of cis-stilbene occurred in the cavity of 14

148 oup, and is required for the stereoselective epoxidation of compounds 1 and 2.

149 tate N-based ligand catalyzes the asymmetric epoxidation of cyclic enones and cyclohexene ketones wit

150 2)2(H2O), B), as well as in their subsequent epoxidation of cyclohexene, was examined in aqueous acet

151 alytic activity of Mo-SIM was tested for the epoxidation of cyclohexene.

152 utilizing molecular oxygen for the selective epoxidation of cyclooctene is fascinating.

153 long with selectivities in the DMDO-mediated epoxidation of d-xylose-based oxepine 1 and d-glucose-ba

154 Subsequently, we examined the epoxidation of differently sized and shaped alkenes 18-2

155 e capability lies in a novel tunable electro-epoxidation of double bonds, where onset of the reaction

156 ome P450 2J2 (CYP2J2) is responsible for the epoxidation of endogenous arachidonic acid, and is invol

157 ent is employed in performing site selective epoxidation of enones containing two alkene sites.

158 ns of a catalyst (1) that leads to selective epoxidation of farnesol at the 6,7-position, remote from

159 Epoxidation of high-linolenic perilla oil was carried ou

160 were utilized in the highly enantioselective epoxidation of homoallylic alcohols and bishomoallylic a

161 The hydroxylation or epoxidation of hydrocarbons by bacterial multicomponent

162 ly active series, are readily synthesized by epoxidation of ketene dimers (4-alkylidene-2-oxetanones)

163 ion of the protein PsbS and the enzymatic de-epoxidation of LHCII-bound violaxanthin to zeaxanthin.

164 e carbocatalysts for low-temperature aerobic epoxidation of linear alkenes in the absence of initiato

165 Epoxidation of N-sulfonyl substituted allenamides with d

166 s an advantageous oxidant for performing the epoxidation of olefins 1.

167 ctive intermediate involved in the catalytic epoxidation of olefins by [(cyclam)Fe(II) ](2+) and H(2)

168 Asymmetric epoxidation of olefins by using an alpha,alpha-dimethylm

169 ized polyoxomolybdate {Mo132} in the aerobic epoxidation of olefins in water at ambient temperature a

170 mplex that catalyzes highly enantioselective epoxidation of olefins with H2O2 is described.

171 y and catalytically competent to perform the epoxidation of olefins with high stereo- and regioselect

172 ent was developed for the diastereoselective epoxidation of one class of sterically hindered tetrahyd

173 high solar radiation, including increased de-epoxidation of photoprotective xanthophyll cycle pigment

174 ent, and environmentally friendly asymmetric epoxidation of primary, secondary, tertiary allylic, and

175 ity as a catalyst for commercially important epoxidation of propylene to form propylene oxide.

176 allacycle, leading to higher selectivity for epoxidation of propylene.

177 are described, providing up to 99% ee in the epoxidation of racemic cis-chromenes.

178 (P3), the latter being thought to arise from epoxidation of some of the phenanthrene.

179 lamide with sodium chlorite followed by (ii) epoxidation of the allylamide to the 2,3-epoxyamide medi

180 es Fe(II)- and alpha-ketoglutarate-dependent epoxidation of the covalently bound N(beta)-fumaramoyl-l

181 Epoxidation of the dihydrodiols with mCPBA gave the isom

182 For 1-acyl(silyl)oxypenta-2,4-dienes, epoxidation of the distal olefin was generally favored i

183 ee energy barrier of the transition state of epoxidation of the etheno adducts studied.

184 added oxygen atoms have established initial epoxidation of the guanine 4-5 bond with pyrimidine ring

185 of HBF(4).OEt(2) followed by m-CPBA promotes epoxidation of the olefin on the face proximal to the am

186 se materials could be made non-degradable by epoxidation of the OND linkers without slowing gelation.

187 uiv of HBF(4).OEt(2) results in preferential epoxidation of the opposite face of the olefin, which is

188 Epoxidation of the remaining double bond followed by epo

189 ation, higher carotenoid to Chl ratio and de-epoxidation of the xanthophyll cycle.

190 cker oxidation of internal olefins involving epoxidation of trans-alkenes followed by a mild and high

191 roved enantioselectivities and yields in the epoxidation of unfunctionalized alkenes.

192 The asymmetric epoxidation of various fluoroolefins has been studied us

193 asing light intensities to induce NPQ and de-epoxidation of violaxanthin (V) to antheraxanthin (A) an

194 he light-harvesting complexes (LHCs), the de-epoxidation of violaxanthin to zeaxanthin, and the photo

195 salt to effect an organocatalytic asymmetric epoxidation of xanthyletin in >99% ee as the key step.

196 The ammonium-directed olefinic epoxidations of a range of differentially N-substituted

197 gy LMCT) are more reactive and selective for epoxidations of electron-rich olefins and explain why Ti

198 clopropanations, dihalocyclopropanations, or epoxidations of four double bonds to yield polyspirocycl

199 ic of Sharpless, peracid, and other directed epoxidations of hydroxylated dienes.

200 t that steady-state selectivity in propylene epoxidation on copper (Cu) nanoparticles increases sharp

201 e two potential directing groups can promote epoxidation on opposite faces of the ring scaffold, evid

202 the structural effects of cesium in styrene epoxidation on silver catalysts.

203 corresponding ammonium species, followed by epoxidation on the face syn to the ammonium moiety exclu

204 on of the corresponding N-oxide, followed by epoxidation on the face syn to the hydroxyl group exclus

205 e two potential directing groups can promote epoxidation on the same face of the ring scaffold, an en

206 ucts demonstrate that the active species for epoxidations on group IV and V transition metals are onl

207 elective route to target compounds using Shi epoxidation or (R)-1-phenylethylamine as a source of chi

208 The ability of hemoproteins to catalyze epoxidation or hydroxylation reactions is usually associ

209 ther functionalized, e.g., by hydrogenation, epoxidation, or dihydroxylation to furnish 2,3,6-trideso

210 iron(IV) species that shows a preference for epoxidation over allylic oxidation in the oxidation of c

211 providing improved enantiocontrol in alkene epoxidation over the parent structure.

212 he mechanisms of macrolide hydroxylation and epoxidation, paramagnetic NMR relaxation measurements we

213 ater selectivities and rates for the desired epoxidation pathway and present smaller enthalpic barrie

214 f the ring scaffold, evidence of competitive epoxidation pathways, promoted by hydrogen-bonding to ei

215 epoxide results from the diastereoselective epoxidation, performed at a multigram scale, of a uridin

216 eroxyflavin formation (pK(a) = 7.2), styrene epoxidation (pK(a) = 7.7), styrene oxide dissociation (p

217 talyzed epoxidation by 100%, suggesting that epoxidation proceeds by a free radical mechanism.

218 Taccalonolide AJ, an epoxidation product of taccalonolide B, was generated by

219 ely to the experimental values for the major epoxidation product than did the shieldings calculated f

220 and the isomeric distributions of Z-stilbene epoxidation products demonstrate that the active species

221 The epoxidation products of taccalonolide T and AI were the

222 The epoxidation products were unstable, however, and the ena

223 Subsequent epoxidation provides sufficient functionality to enable

224 lpies and entropies show that differences in epoxidation rates and selectivities reflect favorable en

225 Epoxidation rates and selectivities vary over five- and

226 xide, indicating that the FMO is involved in epoxidation rather than Baeyer-Villiger oxidation.

227 e dominant factor, and any assistance to the epoxidation reaction by the potential to form hydrogen-b

228 structural basis for the specificity of the epoxidation reaction catalyzed by SQLE and enable furthe

229 tive meta-chloroperoxybenzoic acid ( m-CPBA) epoxidation reaction coupling with collision-induced dis

230 The diene was subjected to an epoxidation reaction for further functionalization of th

231 oxo-molybdenum(V)-corrolato complexes in the epoxidation reaction has not been reported earlier.

232 t directing the stereochemical course of the epoxidation reaction in a five- or seven-membered system

233 t to direct the stereochemical course of the epoxidation reaction is either comparable or superior to

234 d, while performing the molybdenum-catalyzed epoxidation reaction of olefins using alkyl hydroperoxid

235 num(V)-corrolato complexes for the catalytic epoxidation reaction of olefins with the help of hydrope

236 The rapid epoxidation reaction was carried out by m-CPBA with high

237 ollowed by a stereoselective dihydroxylation/epoxidation reaction, from an alpha,beta-unsaturated dia

238 The diastereofacial selectivity of the epoxidation reaction, which delivers the key intermediat

239 somers were detected as a consequence of the epoxidation reaction.

240 l rate and the stereochemical outcome of the epoxidation reaction.

241 Enantioselective epoxidation reactions (60-83% yield, 85-98% ee) were ach

242 bstituted zeolites have been used for olefin epoxidation reactions for decades, yet the underlying pr

243 erized that catalyzes both hydroxylation and epoxidation reactions in the final biosynthetic steps, l

244 dapted Luche reduction and aluminum-mediated epoxidation reactions to maximize the synthetic efficien

245 t reported examples of kinetic resolution in epoxidation reactions using iminium salt catalysis are d

246 Surprisingly, the cyclopropanation and epoxidation reactions were discovered to be rapid and th

247 in special selective photocatalysis, namely epoxidation reactions, among others.

248 ature NMR experiments and diastereoselective epoxidation reactions.

249 ult substrates for other types of asymmetric epoxidation reactions.

250 tom transfer, C-H bond activation and olefin epoxidation reactions.

251 itand that is catalytically active in alkene epoxidation reactions.

252 -15 silica is reported herein along with the epoxidation reactivity once reloaded with manganese.

253 A new and practical in situ prepared epoxidation reagent was developed for the diastereoselec

254 The novel bifunctional epoxidation reagent, 2-carboperoxy-3,4,5,6-tetrafluorobe

255 upling, intramolecular Mitsunobu, and tandem epoxidation/rearrangement reactions.

256 n an inactive taccalonolide and that C-22,23 epoxidation restored its activity.

257 eactions, including a highly stereoselective epoxidation/ring opening sequence and an oxidative rearr

258 eactions, including a highly stereoselective epoxidation/ring-opening sequence and an oxidative rearr

259 series of compounds, a Sharpless asymmetric epoxidation (SAE) route yielded in a direct fashion the

260 (+) active sites in a TiCuOx mixed oxide the epoxidation selectivity can be tuned.

261 mutant and an increase in its xanthophyll de-epoxidation state correlated with the higher qE associat

262 32-nm) TLS correlates with changes in the de-epoxidation state of the xanthophyll cycle and photoprot

263 perimental measurements demonstrate that the epoxidation steps exhibit only weak [H2O] dependence, at

264 The epoxidation stereoselectivity arises from simple steric

265 es through bioelectrochemical hydroxylation, epoxidation, sulfoxidation, and demethylation.

266 of carotenoid homeostasis, with ZEP-mediated epoxidation targeting carotenoids for degradation by CCD

267 lower ratio of tritium release to vitamin K epoxidation than wild-type enzyme (i.e., 0.12 versus 1.1

268 olecular amination, and a diastereoselective epoxidation that simultaneously converts the new chiral

269 ydroxylation, bicyclic ring-opening, and two epoxidations that generate the sesquiterpenoid core skel

270 In epoxidations, the degree of reversibility in betaine for

271 synthesis of kibdelone C that utilizes a Shi epoxidation to establish the absolute and relative stere

272 ssfully overrode steric effects and directed epoxidation to occur at the more hindered face of the te

273 Our strategy involves direct asymmetric epoxidation to produce an enantiopure beta-epoxyaldehyde

274 e hydroxyl group results in direction of the epoxidation to the syn face.

275 nals could be followed by diastereoselective epoxidations to provide epoxy alcohols with high enantio

276 eflect favorable entropy gains produced when epoxidation transition states disrupt hydrogen-bonded H(

277 The most hydrophilic Ti-BEA gives epoxidation turnover rates that are 100 times larger tha

278 The diastereoselectivities and rates of epoxidation (upon treatment with Cl3CCO2H then m-CPBA) o

279 The reaction kinetics of cyclohexene epoxidation using aqueous H2O2 oxidant and the highly se

280 Meanwhile, epoxidation using F3CCO3H in conjunction with F3CCO2H pr

281 Parallels with epoxidation using organic peracids were also examined.

282 mines via a tandem C-H oxidation/double bond epoxidation using sodium chlorite is reported.

283 In contrast, for olefin epoxidation using tert-butyl-hydroperoxide as oxidant, t

284 Mechanisms of enzymatic epoxidation via oxygen atom transfer (OAT) to an olefin

285 Epoxidation via the Psigma* pathway represents an energe

286 The site of epoxidation was dependent upon olefin substitution, olef

287 - and regioselectivity of their Ru-catalyzed epoxidation were studied.

288 anatory variables (NPQ, xanthophyll cycle de-epoxidation) were observed.

289 to undergo efficient and clean photoinduced epoxidation when irradiated in the presence of molecular

290 n the synthesis include Sharpless asymmetric epoxidation, which establishes the chiral centers, and a

291 o the base planarity upon dearomatization by epoxidation, which is an important feature for DNA inter

292 es a weaker dependence on Lewis acidity than epoxidation, which suggests that the design of catalysts

293 ghly enantioselective and diastereoselective epoxidation with a range of alpha-carbonyl-beta-substitu

294 cles (NPs) are shown to catalyze cyclooctene epoxidation with Faradaic efficiencies above 30%.

295 Olefin epoxidation with peracetic acid shows the imprinted mang

296 pment of a modified protocol for the Seebach epoxidation with TADOOH, which affords an unprecedented,

297 fferent conditions a highly enantioselective epoxidation with the same starting materials, reagents,

298 ane synthesis that combines enantioselective epoxidation with this methylene-transfer protocol.

299 rivative to asymmetric sulfur ylide-mediated epoxidation with up to 92% ee (14 examples) was also dem

300 ieve high rates and selectivities for alkene epoxidations with H(2)O(2).