Scope of chemical fixation of carbon dioxide catalyzed by a bifunctional monomeric tungstate
作者:Keigo Kamata、Toshihiro Kimura、Hanako Sunaba、Noritaka Mizuno
DOI:10.1016/j.cattod.2013.09.054
日期:2014.5
corresponding carbamic acid intermediates. The present bifunctionality could be applied to chemical fixation of CO2 even at atmospheric pressure with various kinds of structurally diverse aryl diamines, primary monoamines, propargylic alcohols, and propargylic amines into cyclic urea derivatives, 1,3-disubstituted urea derivatives, cyclic carbonates, and cyclic carbamates, respectively.
简单的单体钨酸盐TBA 2 [WO 4 ](I,TBA =四正丁基铵)中的钨-氧羰基部分同时显示出CO 2和1,2-苯二胺(1a)的双功能活化。通过1 H,13 C和183 W NMR光谱证实,加合物I-1a和I-(CO 2)n(n = 1和2)是由I与1a和CO 2的反应形成的。, 分别。这些加合物在形成相应的氨基甲酸中间体中起重要作用。本双功能可应用于CO的化学固定2即使在与各种结构不同的芳基二胺,伯单胺,炔丙醇,炔丙基和胺成环状脲衍生物,1,3-二取代的脲衍生物,环状碳酸酯大气压,和环状氨基甲酸酯。