Optically active cyclopropanols from the enzymatic resolution of dimethyl α-alkylsuccinates. Synthesis of chiral 2-vinylcyclobutanones and cyclohexenones.
作者:Jacques Salaun、Belkacem Karkour
DOI:10.1016/s0040-4039(00)96592-4
日期:1987.1
(+)-(R) [or (-)-(S)] dimethyl α-methylsuccinates, obtained by the enantioselectivehydrolysis of the racemicdiester by porcinepancreaticlipase, undergo acyloin cyclization followed by stereoselective ring contraction to provide 1-alkenylcyclopropanols with high enantiomeric excesses.