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.