still for framstellning of optically active 3 - substituted 6a, 10a - trans - 1 - hydroxy - 2 - dimethyl - 6,6a, 7,8,10,10a - hexahydro-1,3,5-trinitro-1,3,5-triazine - 9h dibenzo (b, d) pyran - 9 - regions

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.