An organozinc species RXZnCH2I generated by reacting Zn(CH2I)2 with RXH was found to be an efficient reagent for the cyclopropanation of olefins at room temperature. A 50.7% ee was obtained for the cyclopropanation of trans-β-methylstyrene when a chiral alcohol was used.
发现通过使Zn(CH 2 I)2与RXH反应生成的
有机锌物质RXZnCH 2 I是在室温下烯烃
环丙烷化的有效试剂。当使用手性醇时,对于反式-β-
甲基苯乙烯的
环丙烷化,获得了50.7%的ee 。