Ring Enlargement of<i>α</i>-Ethylidenecycloalkanones to<i>β</i>-Alkylidenecycloalkanones Induced by Trimethylstannyllithium/Aldehyde Equivalents/Lewis Acids
作者:Jun Fujiwara、Jin Tokuyasu、Tadashi Sato
DOI:10.1246/bcsj.68.289
日期:1995.1
α-Ethylidenecycloalkanones underwent a ring enlargement to β-alkylidenecycloalkanones upon a treatment with trimethylstannyllithium/aldehyde equivalents/Lewis acids with high stereoselectivity.
DONALDSON, WILLIAM A., TETRAHEDRON, 43,(1987) N 13, 2901-2908
作者:DONALDSON, WILLIAM A.
DOI:——
日期:——
Cleavage of (3-chloro-2-methylenecycloalkyl)palladium chloride dimers: formation of olefins and α-methoxyolefins
作者:William A. Donaldson
DOI:10.1016/s0040-4020(01)86828-9
日期:1987.1
The cleavage of the title compounds () in methanolic potassium hydroxide gives mixtures of olefins and α-methoxyolefins in good yields. The ratio of the products is dependent on the size of the carbocydic ring. The mechanism proposed involves cleavage of to the corresponding allylic chloride (). Solvolysis of the chloride gives the α-methoxyolefin. Alternatively, oxidative addition of to Pd(0) generates