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公开(公告)号:US4157349A
公开(公告)日:1979-06-05
申请号:US885776
申请日:1978-03-13
IPC分类号: C07C45/00 , C07C45/65 , C07C45/66 , C07C49/653 , C07C67/00
CPC分类号: C07C49/653 , C07C45/65 , C07C45/66
摘要: 5-Ethenyl-4,4a,7,8-tetrahydro-4a-methyl-2(3H)-naphthalenone, an intermediate useful in the total synthesis of steroids, is prepared by dehydrohalogenation of 5-(2-bromoethylidene)-2(3H)-4a-methyl-4,4a,5,6,7,8-hexahydronaphthalen-2-one by a pyrolytic procedure or by means of dehydrohalogenating agents, for example, a mixture of lithium bromide and lithium carbonate.
摘要翻译: (PG,15-乙烯基-4,4a,7,8-四氢-4a-甲基-2(3H) - 萘酮,其用于全合成类固醇的中间体是通过5-(2-溴亚乙基 )-2(3H)-4a-甲基-4,4a,5,6,7,8-六氢萘-2-酮通过热解方法或通过脱卤化氢剂,例如溴化锂和碳酸锂的混合物 。