Reactions of dichlorocarbene and tri-chloromethide with O-alkenyl esters and ethers, N-vinyl amides, and 1-haloalkenes
作者:R.C. De Selms、T.-W. Lin
DOI:10.1016/0040-4020(67)85101-9
日期:1967.1
mixtures due to apparent addition of trichloromethide and dichlorocarbene. In general, the yields of gem-dichlorocyclopropanes increased with increasing alkyl substituents on the alkene substrates. A trend toward increasing yield of gem-dichlorocyclopropanes was also noticed with the following substituents on the alkene substrates: OP(O) (OR)2 < Halogen ≅ OC(O)R < OR ≅ NRC(O)R′. Evidence is presented
A novel chain reaction induced by cathodic reduction was found in the reaction system consisting of carbon tetrachloride, chloroform, and electrophiles such as aldehydes or vinyl acetate. The current efficiency of addition of trichloromethylanion to electrophiles was extremely high. Synthesis of an analogue of ethyl chrysanthemate using this new reaction was also described.
Aldehyde diacetates react with trichloromethane in the standard interphase catalysis conditions to form α-trichloromethylcarbinols or their acetates depending on temperature and time of the reaction.