Preparation of Steroid Olefins from Heptafluorobutyrates
作者:Lucie Dalibová、Ladislav Kohout
DOI:10.1135/cccc19980549
日期:——
Steroids with hydroxyl group in positions 2, 3, 6, 7, 17 and 20 were esterified with heptafluorobutyric anhydride. The obtained esters on treatment with lithium bromide in N,N-dimethylacetamide in the presence of pyridinium tosylate afforded the corresponding olefins in high yields.