Stereocontrolled synthesis of functionalised cyclohexanes via the lithium amide-mediated rearrangement of a meso 4,5-disubstituted cyclohexene oxide
作者:Peter O'Brien、Jérôme J. Tournayre
DOI:10.1016/s0040-4020(97)10201-0
日期:1997.12
Reaction of a 90:10 mixture of diastereomeric meso 4,5-disubstituted cyclohexene oxides (prepared via a stereoselective epoxidation reaction) with a mixed base system of a lithium amide and potassium tert-butoxide produces a 72% yield of an allylic alcohol and a 9.6% yield of recovered epoxide, both as single diastereoisomers. The relative stereochemistry of the epoxides and the allylic alcohol is