FORFARANDE FOR FRAMSTELLNING AV OPTISKT AKTIVA 3-SUBSTITUERADE 6A, 10A-TRANS-1-HYDROXI-6,6-DIMETYL-6,6A,7,8,10,10A-HEXAHYDRO-9H-DIBENSO(B,D) PYRAN-9-ONER

摘要

Reaction of a 5-substituted resorcinol with optically active apoverbenone in the presence of aluminum chloride affords an optically active trans-1-hydroxy-3-substituted-6,6-dimethyl-6,6a,7,8,10,10a-hexahydro-9 H-dibenzo[b,d]pyran-9-one.