Diphenyl Carbonate: A Highly Reactive and Green Carbonyl Source for the Synthesis of Cyclic Carbonates
作者:Ek Raj Baral、Jun Hee Lee、Jeung Gon Kim
DOI:10.1021/acs.joc.8b01695
日期:2018.10.5
A practical, safe, and highly efficient carbonylation system involving a diphenyl carbonate, an organocatalyst, and various diols is presented herein and produces highly valuable cyclic carbonates. In reactions with a wide range of diols, diphenyl carbonate was activated by bicyclic guanidine 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) as a catalyst, which successfully replaced highly toxic and unstable
本文提出了一种实用,安全且高效的羰基化系统,该系统涉及碳酸二苯酯,有机催化剂和各种二醇,并可以生产出有价值的环状碳酸酯。在与各种二醇的反应中,碳酸二苯酯被双环胍1,5,7-三氮杂双环[4.4.0] dec-5-ene(TBD)用作催化剂,成功取代了剧毒和不稳定的光气或其衍生物,同时保持所需的高反应活性。而且,该新系统可用于合成空间需求的环状碳酸酯,例如四取代的频哪醇碳酸酯,而这些碳酸酯是无法通过其他常规方法获得的。