ライフサイエンスコーパス: epoxidation

1 orhabdus luminescens that catalyzes stilbene epoxidation.

2 roxylation and an organocatalytic double Shi epoxidation.

3 16 hydroxylation is likely to precede C12,13 epoxidation.

4 ase the reactivity and selectivity of olefin epoxidation.

5 , oxidative cleavage was observed instead of epoxidation.

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

7 the cause of the high enantiospecificity of epoxidation.

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

9 by an in situ regio- and diastereocontrolled epoxidation.

10 ide highly efficient catalysts for propylene epoxidation.

11 n to be an effective catalyst for asymmetric epoxidation.

12 , largely determine the stereoselectivity of epoxidation.

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

14 eduction and a selective homoallylic alcohol epoxidation.

15 tors could replace FMN in the HppE-catalyzed epoxidation.

16 he hydroxylation pathway is favored over the epoxidation.

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

18 ion, cyclic ketalization, and regioselective epoxidation.

19 ble of generating initiators for cyclooctene epoxidation.

20 y for various dioxirane-catalyzed asymmetric epoxidations.

21 ectivity in organocatalytic enantioselective epoxidations.

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

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

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

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

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

27 by stereoselective transformations including epoxidation and cyclopropanation.

28 -glutamate, following which peracid-mediated epoxidation and deprotection provided the epoxide-contai

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

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

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

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

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

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

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

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

37 eactions including asymmetric hydrogenation, epoxidation and lithiation.

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

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

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

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

42 Diastereoselective epoxidation and regioselective ring-opening methods were

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

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

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

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

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

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

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

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

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

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

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

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

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

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

57 p strategy, and a chemo- and stereoselective epoxidation at C(18,19).

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

59 However, stilbene epoxidation biosynthesis and its biological roles remain

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

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

62 te concentration were hyperbolic for alphaNF epoxidation but highly cooperative (Hill n coefficients

63 A H160A mutant showed wild-type levels of epoxidation but substantially less carboxylation.

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

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

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

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

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

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

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

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

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

73 V) complexes is investigated for controlling epoxidation catalysis.

74 ly of Ti surface density and of their use in epoxidation catalysis.

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

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

77 Olefin epoxidation catalyzed by methyltrioxorhenium (MTO, CH3Re

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

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

80 te the C(4a-13-20a) macrocycle, an effective epoxidation/deoxygenation sequence to isomerize the C(13

81 Facial selectivity of the epoxidation depended on the identity of the fused carboh

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

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

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

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

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

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

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

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

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

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

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

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

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

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

96 bits olefin cis-dihydroxylation and enhances epoxidation for both 1 and 2.

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

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

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

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

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

102 lculated a chemoselective hydroxylation over epoxidation in the gas phase.

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

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

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

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

107 Consequently, it is proposed that epoxidation is mediated by [(TPA)FeV(O)(OOCCH3)]2+, gene

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

109 The stereochemistry of these epoxidations is predicted to be governed by a preference

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

111 Asymmetric epoxidation, kinetic resolution, and desymmetrization ha

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

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

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

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

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

117 one of the salen platform is revealed in the epoxidation of 1,2-dihydronaphthalene by the metal oxo.

118 one of the salen platform is revealed by the epoxidation of 1,2-dihydronapthalene by a variety of oxi

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

120 The mechanism of the epoxidation of 2-cyclohexen-1-one with tert-butyl hydrop

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

122 ronic structure theory was used to model the epoxidation of 3-carene by peroxyformic acid.

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

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

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

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

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

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

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

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

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

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

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

134 Asymmetric epoxidation of allylic and homoallylic amine derivatives

135 450 (P450) 1A2 was found to catalyze the 5,6-epoxidation of alpha-naphthoflavone (alphaNF), 1-hydroxy

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

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

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

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

140 DMDO epoxidation of carbohydrate fused [13]-macro-dilactones

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

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

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

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

145 scribes a highly chemo- and enantioselective epoxidation of conjugated cis-enynes using readily avail

146 rally predict facial selectivity in the DMDO-epoxidation of cyclic enol ethers.

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

148 2)2(H2O), B), as well as in their subsequent epoxidation of cyclohexene, was examined in aqueous acet

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

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

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

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

153 of dimethyl 4 R,5R-epoxyoctanedioate via Shi epoxidation of dimethyl E-oct-4-enedioate and by transes

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

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

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

157 The hydroxylation or epoxidation of hydrocarbons by bacterial multicomponent

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

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

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

161 Epoxidation of N-sulfonyl substituted allenamides with d

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

163 ed as supported catalysts for the asymmetric epoxidation of olefins and the hydrolytic kinetic resolu

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

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

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

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

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

169 n developed for the efficient site-selective epoxidation of poylolefinic isoprenoid alcohols, based o

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

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

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

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

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

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

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

177 Epoxidation of the dihydrodiols with mCPBA gave the isom

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

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

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

181 ed by way of a noteworthy sequence involving epoxidation of the O-methyl ether, methanolysis under mi

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

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

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

185 Epoxidation of the remaining double bond followed by epo

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

187 nd used as organocatalysts in the asymmetric epoxidation of unfunctionalized alkenes, giving rise to

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

189 The asymmetric epoxidation of various fluoroolefins has been studied us

190 Asymmetric epoxidation of various olefins with an N-aryl-substitute

191 meric excess (ee)) has been obtained for the epoxidation of various styrenes using an easily prepared

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

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

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

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

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

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

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

199 buffer, lauric acid, and methyl laurate and epoxidations of styrene and 10-undecenoic acid.

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 providing improved enantiocontrol in alkene epoxidation over the parent structure.

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

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

212 ivity but also to convert a well established epoxidation pathway into a peroxidation pathway, the fir

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

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

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

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

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

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

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

220 The epoxidation products of taccalonolide T and AI were the

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

222 Subsequent epoxidation provides sufficient functionality to enable

223 ter than four, and 20-fold lower cyclohexene epoxidation rate constants (per Ti) than on calix[4]aren

224 a calixarene upper-rim substituent effect on epoxidation rate.

225 ene and homooxacalix[3]arenes led to similar epoxidation rates and near-edge spectra after calcinatio

226 Epoxidation rates and selectivities vary over five- and

227 rmal treatment below 573 K, and the relative epoxidation rates of trans- and cis-alkenes showed that

228 The pronounced sensitivity of observed epoxidation rates to the support oxide, in the absence o

229 anol on a SiO2 surface increases cyclohexene epoxidation rates with tert-butyl hydroperoxide 20-fold

230 balancing two competing factors that control epoxidation rates-equilibrated hydroperoxide binding at

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

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

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

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

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

236 nce of substitution on the dimethyldioxirane epoxidation reaction of six- and seven-membered cyclic e

237 s exhibit higher selectivity in the ethylene epoxidation reaction than conventional spherical particl

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

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

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

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

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

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

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

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

246 ld be coupled with tandem diastereoselective epoxidation reactions to provide epoxy alcohols and ally

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

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

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

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

251 ature NMR experiments and diastereoselective epoxidation reactions.

252 ult substrates for other types of asymmetric epoxidation reactions.

253 itand that is catalytically active in alkene epoxidation reactions.

254 e H-bonding interactions for the exceptional epoxidation reactivity of titanium silicalite and relate

255 -15 silica is reported herein along with the epoxidation reactivity once reloaded with manganese.

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

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

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

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

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

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

262 nalized by complimentary dihydroxylation and epoxidation routes to install the C10 axial alcohol.

263 Key reactions include a Sharpless asymmetric epoxidation (SAE) of a trans-vinylsilane and an enzymati

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

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

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

267 32-nm) TLS correlates with changes in the de-epoxidation state of the xanthophyll cycle and photoprot

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

269 The epoxidation stereoselectivity arises from simple steric

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

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

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

273 In epoxidations, the degree of reversibility in betaine for

274 The carboxylase uses vitamin K epoxidation to drive Glu carboxylation, and the two half

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

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

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

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

279 e that the steric hindrance is larger in the epoxidation transition states than in the hydroxylation

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

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

282 romenes has been investigated for asymmetric epoxidation using chiral ketone catalysts.

283 Meanwhile, epoxidation using F3CCO3H in conjunction with F3CCO2H pr

284 Parallels with epoxidation using organic peracids were also examined.

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

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

287 Epoxidation via the Psigma* pathway represents an energe

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

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

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

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

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

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

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

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

296 Olefin epoxidation with peracetic acid shows the imprinted mang

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

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

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

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