申请人:Eli Lilly and Company
公开号:US04054582A1
公开(公告)日:1977-10-18
Reaction of cis-1-hydroxy-3-substituted-6,6-dimethyl-6,6a,7,8,10,10a-hexahydro-9H-dibe nzo[b,d]pyran-9-ones with an aluminum halide in an unreactive organic solvent effects complete epimerization to provide the corresponding trans-1-hydroxy-3-substituted-6,6-dimethyl-6,6a,7,8,10,10a-hexahydro-9H-di benzo[b,d]pyran-9-one.
cis-1-羟基-3-取代-6,6-二甲基-6,6a,7,8,10,10a-六氢-9H-二苯并[b,d]吡喃-9-酮在无反应性有机溶剂中与铝卤化物反应,完全发生对映异构化,生成相应的trans-1-羟基-3-取代-6,6-二甲基-6,6a,7,8,10,10a-六氢-9H-二苯并[b,d]吡喃-9-酮。