Quaternary ammoniums and a cationic sodium complex as supramolecular catalysts in ring-opening of epoxides by amines
作者:Coralie Thomas、Sébastien Brut、Brigitte Bibal
DOI:10.1016/j.tet.2014.01.018
日期:2014.2
Supramolecular ionic organocatalysts and a metal-based catalyst were investigated in the ring-opening of epoxides by amines, without any artifice to enhance conversion (i.e., solvophobic effect, extended reaction time, heating, excess of amine, high catalyst loading). Different β-amino-alcohols were obtained in satisfying conversion (50–80%) in 24 h, under mild conditions.
研究了超分子离子有机催化剂和金属基催化剂在胺类环氧化物开环中的作用,没有任何提高转化率的手段(例如,疏溶剂效应,延长的反应时间,加热,胺的过量,高催化剂负载)。在温和的条件下,在24小时内以令人满意的转化率(50–80%)获得了不同的β-氨基醇。