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
Studies in phosphinemethylene chemistry
作者:Dietmar Seyferth、James K. Heeren、Gurdial Singh、Samuel O. Grim、William B. Hughes
DOI:10.1016/s0022-328x(00)80365-4
日期:1966.3
The action of phenyllithium on (bromomethyl)triphenylphosphonium bromide results in a nearly equimolar mixture of triphenylphosphinebromomethylene (formal H÷ abstraction) and triphenylphosphinemethylene (formal Br÷ abstraction). With (iodomethyl)triphenylphosphonium iodide a mixture of triphenylphosphineiodomethylene and triphenylphosphinemethylene is formed in which the latter is favored by a factor
Carbon-Carbon Bond Formation by Use of Chloroiodomethane as a C<sub>1</sub>Unit. I. Formation of Chloromethyltriphenylphosphonium Iodide, and Its Application for the Wittig Chloromethylenation of Aldehydes and Ketones
Chloromethyltriphenylphosphonium iodide has been prepared by the reaction of chloroiodomethane with triphenylphosphine. Upon treatment with potassium t-butoxide in t-butyl alcohol, the phosphonium iodide was converted into chloromethylenetriphenylphosphorane; this in turn was used for the Wittig reaction of aldehydes and ketones into the corresponding chloroolefins of the type RCH=CHCl and RR′C=CHCl in
Conversion of aldehydes and ketones into chloro-olefins and acetylenes using chloroiodomethane as a chloromethylene source
作者:Sotaro Miyano、Yu Izumi、Harukichi Hashimoto
DOI:10.1039/c39780000446
日期:——
Chloroiodomethane smoothly reacts with triphenylphosphine to yield chloromethyltriphenylphosphonium iodide (1), which in turn can be utilized for the conversion of aldehydes and ketones into chloro-olefins and acetylenes upon treatment with potassium t-butoxide.
Regiospecific addition of benzeneselenenyl halide to 1,1-dis ubstituted olefins
作者:Pak-Tsun Ho、Ralph J. Kolt
DOI:10.1139/v82-096
日期:1982.3.1
The reaction of benzeneselenenyl halide with a variety of 1,1-disubstituted olefins under controlled conditions yields regiospecifically the anti-Markovnikov adducts which have been converted into the synthetically useful vinyl halides and allylhalides.