The BF3-catalysed rearrangements of exocyclic methylene epoxides at C-3, C-6, C-7 and C-12 give mixtures of epimeric aldehydes. These results are explained on the basis of the involvement of discrete carbonium ion intermediates in the rearrangement processes.
Frankel,J.J. et al., Bulletin de la Societe Chimique de France, 1968, p. 4870 - 4875
作者:Frankel,J.J. et al.
DOI:——
日期:——
Transmission of Electrical Effects Through Homoallylic Systems. I. The Synthesis and Physical Properties of a Series of 6-Arylcholesterols and of 6-Arylcholesteryl p-Toluenesulfonate Esters
作者:Richard A. Sneen
DOI:10.1021/ja01548a044
日期:1958.8
Action of Methylmagnesium Iodide on Cholesterol α-Oxide and 6-Ketocholestanol
作者:Louis F. Fieser、Jean Rigaudy
DOI:10.1021/ja01154a049
日期:1951.10
Davis; Summers, Journal of the Chemical Society, 1960, p. 4707