Tungstophosphoric acid catalyzed synthesis of N-sulfonyl-1,2,3,4-tetrahydroisoquinoline analogs
作者:Ratchanok Pingaew、Supaluk Prachayasittikul、Somsak Ruchirawat、Virapong Prachayasittikul
DOI:10.1016/j.cclet.2013.06.019
日期:2013.10
An operationally simple and eco-friendly protocol has been developed for the synthesis of N-sulfonyl-1,2,3,4-tetrahydroisoquinolines 3 using the modified Pictet-Spengler reaction of N-sulfonylphenylethylamines 1 and various aldehydes 2 in the presence of tungstophosphoric acid hydrate. (C) 2013 Ratchanok Pingaew. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.