A New Convenient Approach to Preparation of 5 or 6 or 7-Nitro-1,2,3,4-Tetrahydrisoquinolines and 2-Alkylsulfonyl-5 or 6 or 7-Nitro-1,2,3,4-Tetrahydroisoquinolines
作者:Chongzhao Ran、Guoping Wang、Taizhi Wu、Meihua Xie
DOI:10.1080/00397910008087192
日期:2000.4.1
N-alkylsulfonyl-p or m or o -nitrophenylethylamines were treated with (HCHO)n in 60% H(2)SO(4/)HOA(c) to give N-alkylsuifonyl-5 or 6 or 7-nitro-1,2,3,4-tetrahydroisoquinolines, then hydrolyzed with 40% HBr to give 5 or 6 or 7-nitro- 1,2,3,4-tetrahydroisoquinolines.