9-OXOBENZOMORPHANS .2. VERSATILE PROCESS FOR THE SYNTHESIS OF 9-OXO-6,7-BENZOMORPHANS
9-OXOBENZOMORPHANS .2. VERSATILE PROCESS FOR THE SYNTHESIS OF 9-OXO-6,7-BENZOMORPHANS
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DOI:
10.1139/v79-294
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发表时间:
1979-01-01
影响因子:
1.1
通讯作者:
BELLEAU, B
中科院分区:
文献类型:
--
作者:
KAVADIAS, G;VELKOF, S;BELLEAU, B
The synthesis of the new analgesics 5-allyl-2''-methoxy-2-methyl-9-oxo-, 2''-methoxy-2,5-dimethyl-9-oxo-, 5-allyl-2-cyclopropylmethyl-2''-methoxy-9-oxo- and 5-(3-ethylenedioxy)butyl-2''-methoxy-3-methyl-9-oxo-6,7-benzomorphans (5a-d) by an improved process is described. It involves bromination of the 5,9b-dihydrobenz[e]indolines to the bormoiminium bormides, followed by hydrolysis with ammonium bicarbonate which converted them to 4-bromo-5,9b-dihydrobenz[e]indolines (in a fast step). These underwent hydration (in a slow step) followed by rearrangement to 5a-d. The course of the reactions was different when Na, K, and ammonium hydorxides were substituted for ammonium bicarbonate.