Reactions of epoxides part XVI. The boro
โ
J.M. Coxon; M.P. Hartshorn; C.N. Muir; K.E. Richards
๐
Article
๐
1967
๐
Elsevier Science
๐
French
โ 266 KB
The greater yield (61%) of the 6-ketone (2a) from 3a-acetoxy-5,6a-epoxy-5a-cholestane (la) compared with the yield (34%) of B-ketone (2b) from the corresponding 3-deoxy compound has been ascribed' to the energetically favourable conformational change, involving the 3-acetoxy group, in the formation