Chemical Fixation of Carbon Dioxide Co-Catalyzed by a Combination of Schiff Bases or Phenols and Organic Bases
作者:Yu-Mei Shen、Wei-Liang Duan、Min Shi
DOI:10.1002/ejoc.200400083
日期:2004.7
Binaphthyldiamino, ethyldiamino and cyclohexyldiamino Schiff bases can catalyze the reaction of epoxides with carbon dioxide in the presence of catalytic amounts of various organic bases to give the corresponding cyclic carbonates in high yields. The simplest binaphthyldiamino Schiff base, derived from the reaction of binaphthyldiamine with salicylaldehyde, gave the highest yield of cyclic carbonate
在催化量的各种有机碱存在下,联萘二氨基、乙基二氨基和环己基二氨基席夫碱可以催化环氧化物与二氧化碳的反应,以高产率得到相应的环状碳酸酯。最简单的联萘二氨基席夫碱,衍生自联萘二胺与水杨醛的反应,得到最高产率的环状碳酸酯。通过使用苯酚代替席夫碱,可以进一步简化该催化体系,从而以高产率得到相应的环状碳酸酯。基于氘标记实验获得了机理见解。氮丙啶与 CO2 和环氧化物与 CS2 的反应也在相同的反应条件下进行了检查。((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)。