A convenient, highly stereoselective synthesis of anti-α,β-epoxy alcohols by the Luche reduction of α,β-epoxy ketones
作者:Keqiang Li、Lawrence G. Hamann、Masato Koreeda
DOI:10.1016/s0040-4039(00)60987-5
日期:1992.10
Reduction of α,β-epoxyketones under the Luche conditions with NaBH4/CeCl3 in MeOH provides anti- (or erythro-) α,β-epoxyalcohols in high yields and with extremely high stereoselectivity.
Chemistry of dioxiranes. 22. Reaction of dimethyldioxirane with alkynes
作者:Robert W. Murray、Megh Singh
DOI:10.1021/jo00071a016
日期:1993.9
The reaction of dimethyldioxirane with several alkynes gives products which are conveniently rationalized by postulating the intermediacy of oxirenes and oxocarbenes. The latter serve as precursors to H atom or methyl group migration products, as well as to cyclopropane insertion products in some cases. Alkenes, derived from some of these carbene reactions, are partially converted to epoxides.