Oxidations with potassium permanganate — metal sulphates and nitrates. β-Selective epoxidation of Δ5-unsaturated steroids

Autor: Jorge A. R. Salvador, A. S. Campos Neves, M. L. Sa E Melo
Rok vydání: 1996
Předmět:
Zdroj: Tetrahedron Letters. 37:687-690
ISSN: 0040-4039
DOI: 10.1016/0040-4039(95)02243-0
Popis: The β-epoxidation of 3 β -acetoxy-Δ 5 -unsaturated steroids has been achieved with mmerous potassium permanganate-metal sulphates and nitrates with a high degree of stereoselectivity. 5β,6β-Epoxides are formed in a one step reaction in good yields and using very low cost reagents. The best results were achieved with KMnO 4 /Fe 2 (SO 4 ) 3 .nH 2 O.
Databáze: OpenAIRE