Halomethyl metal compounds. XXXIX. Reactions of phenyl(trihalomethyl)mercury-derived dihalocarbenes with cyclic allylic alcohols, acetates, and methyl ethers
Photochemistry of alkyl halides. 10. Vinyl halides and vinylidene dihalides
作者:Paul J. Kropp、Steven A. McNeely、Robert Drummond Davis
DOI:10.1021/ja00361a028
日期:1983.11
Proprietes photochimiques du dimethyl-2,4 iodo-3 pentene-2, des iodo-1 cycloalcenes, des (halogenomethylene) cycloalcanes et des (dihalogenomethylene) cyclohexanes. Formation de produits radicalaires et ioniques. Mecanismes. Donnees spectrales UV, IR, RMN 1 H
Proprietes photochimiques du dimethyl-2,4 iodo-3 pentene-2, des iodo-1 cycloalcenes, des (halogenomethylene) cycloalcanes et des (dihalogenomethylene) cyclohexes。形成 de produits 激进分子和 ioniques。机制。Donnees 光谱 UV、IR、RMN 1 H
A novel, simple method for transformation of C–Se to C–O bonds
Oxidation of alkyl phenyl selenides with m-chloroperbenzoic acid in methanol at room temperature affords the corresponding alkyl methyl ethers almost quantitatively, the reaction being accompanied by phenyl migration and ring-contraction respectively when applied to selenides having a phenyl group vicinal to the phenylselenium moiety and to some methoxyselenation products of cyclic olefins.
Mild Two-Step Process for the Transition-Metal-Free Synthesis of Carbon−Carbon Bonds from Allylic Alcohols/Ethers and Grignard Reagents
作者:Xinping Han、Yanhua Zhang、Jimmy Wu
DOI:10.1021/ja100747n
日期:2010.3.31
A mild two-step process for the regioselective, transition-metal-free preparation of carbon-carbon bonds from allylic alcohols/ethers and Grignardreagents is described. This process obviates the need for the harsh deprotection conditions usually required for removal of methyl ethers. The synthesis is accomplished by photochemically promoted allylic substitution reactions of allylic alcohols and ethers
The photocyclization of cis,cis-Cyclohepta-1,3-diene (1) to give bicyclo[3.2.0]hept-6-ene (2) proceed through a two-step process, in which the cis,cis-isomer (1) isomerizes photochemically to the highly strained cis,trans-cycloheptadiene (5) which in turn cyclizes thermally to give the bicycloheptene (2); the cis,trans-isomer (5) was trapped chemically by acidic methanol at room temperature to give
Novel oxidation of alkyl phenyl tellurides and telluroxides with meta-chloroperbenzoic acid: replacement of tellurium moiety by methoxy group accompanied by ring-contraction and phenyl migration
作者:Sakae Uemura、Shin-ichi Fukuzawa
DOI:10.1016/s0040-4039(00)88338-0
日期:1983.1
Oxidation of alkyl phenyl tellurides and telluroxides with meta-chloroperbenzoic acid in methanol at room temperature was accompanied by phenyl migration and ring-contraction respectively when applied to the compounds having phenyl group next to the tellurium moiety and to the methoxytelluration products of cyclic olefins.