申请人:Eli Lilly and Company
公开号:US04171315A1
公开(公告)日:1979-10-16
Reaction of 4-(1-hydroxy-1-methylethyl)-3-cyclohexen-1-one with a 5-substituted resorcinol in the presence of boron tribromide, boron trifluoride or stannic chloride provides, depending upon the duration of reaction, either a 2,7-dihydroxy-5-isopropylidene-9-substituted-2,6-methano-3,4,5,6-tetrahydr o-2H-1-benzoxocin or a 6a,10a-cis-1-hydroxy-3-substituted-6,6-dimethyl-6,6a,7,8,10,10a-hexahydro- 9H-dibenzo[b,d]pyran-9-one.
4-(1-羟基-1-甲基乙基)-3-环己烯-1-酮与一种5-取代的间苯二酚在三溴化硼、三氟化硼或氯化锡存在下反应,根据反应时间的不同,可以得到2,7-二羟基-5-异丙亚甲基-9-取代-2,6-甲烷-3,4,5,6-四氢-2H-1-苯并氧茴香或6a,10a-顺式-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。