Azidotrimethylsilane-mediated Schmidt rearrangement of 2-aryl-1-methylsulfonyl-1,2,3,4-tetrahydro-4-quinolones in trifluoroacetic acid was investigated. In contrast to the corresponding 2-aryl-1,2,3,4-tetrahydro-4-quinolone precursors, the N-methylsulfonyl derivatives displayed non-regioselectivity of carbon migration during nitrogen insertion affording the isomeric ring-expanded derivatives via alkyl and aryl migration.
研究了
叠氮化三甲基
硅烷介导的 2-芳基-1-甲磺酰基-1,2,3,4-四氢-4-
喹啉酮在
三氟乙酸中的施密特重排反应。与相应的 2-芳基-1,2,3,4-四氢-4-
喹啉酮前体相比,N-甲基磺酰基衍
生物在氮插入过程中显示出碳迁移的非区域选择性,并通过烷基和芳基迁移产生异构环扩展衍
生物。