This invention describes an optically active benzopyran compound of the formula [I] or [II]:
and a process for producing it
in which an olefin compound of the formula [V] or [VI]:
is subjected to asymmetric epoxidation reaction, using, as a catalyst, an optically active manganese complex of the formula [III] or [IV] :
本发明描述了一种式[I]或[II]的光学活性苯并
吡喃化合物:
及其生产工艺
式[V]或[VI]的烯烃化合物:
以式[III]或[IV]的光学活性
锰络合物为催化剂,进行不对称环氧化反应: