Activation of (salen)CoI complex by phosphorane for carbon dioxide transformation at ambient temperature and pressure
作者:Feng Zhou、Shi-Liang Xie、Xiao-Tong Gao、Rong Zhang、Cui-Hong Wang、Guang-Qiang Yin、Jian Zhou
DOI:10.1039/c7gc01458a
日期:——
the reaction of carbon dioxide with terminal epoxides or aziridines at ambient temperature and 1 bar carbon dioxide pressure. Only 1.0 mol% of both (salen)CoI 3g and phosphorane 4d are required for cyclic carbonate synthesis, and the catalyst loading could even be lowered down to 0.1 mol%. Under this condition, no polycarbonate formation is detected by NMR analysis. It is proposed that the high efficiency
我们报道了由磷烷活化(salen)CoI复合物3g形成双功能催化剂,用于在环境温度和1 bar二氧化碳压力下二氧化碳与末端环氧化物或氮丙啶的反应。(salen)CoI 3g和磷烷4d两者仅需要1.0 mol%即可用于环状碳酸酯的合成,并且催化剂的负载量甚至可以降低至0.1 mol%。在这种条件下,通过NMR分析未检测到聚碳酸酯的形成。有人提出,高效率源自磷烷对(salen)CoI的活化,从而形成具有增强的Lewis酸度的磷烷-salen Co(III)络合物,用于亲电活化,同时生成碘离子作为Lewis碱的co-促进环氧化物开环的催化剂。