Decarboxylation reaction. VIII. Reaction of electron-deficient carbon-carbon double bonds with trichloroacetic acid. A unique 1,1-dichlorocyclo-propane formation through .BETA.-trichloromethylation.
作者:KATSUMI NANJO、KUNIO SUZUKI、MINORU SEKIYA
DOI:10.1248/cpb.26.848
日期:——
The present paper describes the 1, 1-dichlorocyclopropane formation from highly electron-deficient carbon-carbon double bonds conjugated, in the main, with two cyano groups by allowing to react with trichloroacetic acid. β-Trichloromethylation was indicated in some cases. Path of the 1, 1-dichlorocyclopropane formation is presumed not to involve dichlorocarbene, but β-trichloromethylated intermediate.
NANJO KATSUMI; SUZUKI KUNIO; SEKIYA MINORU, CHEM. AND PHARM. BULL., 1978, 26, NO 3, 848-852
作者:NANJO KATSUMI、 SUZUKI KUNIO、 SEKIYA MINORU
DOI:——
日期:——
Enantioface-differentiating epoxidation of alkylidenemalononitriles with molecular oxygen, catalyzed by chiral tertiary amines.
作者:KATSUMI NANJO、KUNIO SUZUKI、MINORU SEKIYA
DOI:10.1248/cpb.29.336
日期:——
The present paper describes the enantioface-differentiaing epoxidation of alkylidenemalononitriles with molecular oxygen, catalyzed by chiral tertiary amines. In the light of the by-product formation, the reaction path was concluded to involve intermolecular nucleophilic attack of a hydroperoxide intermediate catalyzed by a chiral tertiary amine. A similar epoxidation was demonstrated with cumylhydroperoxide in the presence of nicotine.