作者:Muneer Ahamed、Thiru Thirukkumaran、Wing Yan Leung、Paul Jensen、Jade Schroers、Matthew H. Todd
DOI:10.1002/ejoc.201000955
日期:2010.11
The aza-Henry reaction of 3,4-dihydroisoquinoline is reported. The reaction is favourable in excess nitromethane under ambient conditions. Isolation of the unstable reaction product is achieved by acylation or alkylation, allowing the synthesis of Reissert-like compounds in good yields from a one-pot, three-component coupling. The rates of reaction for dihydroisoquinoline and the corresponding benzylisoquinolinium
报道了 3,4-二氢异喹啉的氮杂-亨利反应。该反应在环境条件下在过量硝基甲烷中是有利的。不稳定反应产物的分离是通过酰化或烷基化实现的,允许从一锅三组分偶联中以良好的产率合成类 Reissert 化合物。二氢异喹啉和相应的苄基异喹啉鎓离子的反应速率已在碱存在和不存在下进行了研究。与二氢异喹啉的反应可能通过硝基甲烷的吖嗪酸互变异构体进行,这是异喹啉鎓离子无法利用的反应途径。实现了传统上有问题的两种 β-硝基胺衍生物的还原,提供了许多新的手性邻二胺的途径。