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 enantioselective hydrolysis of the racemic diester by porcine pancreatic lipase, undergo acyloin cyclization followed by stereoselective ring contraction to provide 1-alkenylcyclopropanols with high enantiomeric excesses.
(+)-(R)[或(-)-((S)]二甲基α-甲基琥珀酸酯,是通过猪胰脂肪酶的外消旋二酯的对映选择性水解而得到的,经酰基环素环化,然后进行立体选择性的环收缩,从而提供1-烯基环丙醇与高对映体过量。