Synthesis based on β-phenylethylamines. IV. Synthesis and antiarrhythmic activity of substituted phenylalkylamines and N-benzyltetrahydroisoquinolines
作者:V. I. Vinogradova、T. I. Golodnyuk、N. Tulyaganov、M. S. Yunusov、N. Yu. Baratov
DOI:10.1007/bf00630535
日期:1993.5
WO2006/129978
申请人:——
公开号:——
公开(公告)日:——
An acid-free Pictet–Spengler reaction using deep eutectic solvents (DES)
作者:Scott Handy、Matthew Wright
DOI:10.1016/j.tetlet.2014.04.077
日期:2014.6
Deep eutectic solvents (such as the combination of either urea or glycerol with choline chloride) are effective solvents/organocatalysts for Pictet-Spengler condensations to form carbolines. The reaction conditions are quite mild and do not require additional Bronsted or Lewis acid catalyst. Given the inexpensive, non-toxic, and recyclable nature of the DES, these reaction conditions are simple and highly environmentally friendly. (C) 2014 Elsevier Ltd. All rights reserved.