Preparation of spirocyclic cyclopropyl ketones through condensation of epoxides with .beta.-keto phosphonates
作者:Thomas E. Jacks、Heidi Nibbe、David F. Wiemer
DOI:10.1021/jo00069a018
日期:1993.8
The beta-keto phosphonate derivatives of several cyclic ketones have been shown to undergo condensation with epoxides upon treatment with base, affording spirocyclic cyclopropyl ketones. Moderate to reasonable yields were obtained under sealed tube conditions with ethylene oxide, propylene oxide, and styrene oxide, and the substituted epoxides gave a single diastereomer in each case. The process can be viewed as an example of regiospecific geminal dialkylation, and cleavage of the cyclopropyl ring allows access to additional alpha,alpha-dialkylated ketones.
Schmueser, Wolfgang; Voss, Juergen, Journal of Chemical Research, Miniprint, 1980, # 8, p. 3361 - 3386
作者:Schmueser, Wolfgang、Voss, Juergen
DOI:——
日期:——
Leriverend,P.; Conia,J.-M., Bulletin de la Societe Chimique de France, 1966, p. 116 - 120