Sn(Ot-Bu)4 is a user-friendly precatalyst for the direct synthesis of dimethyl carbonate from CO2 and MeOH. It is far more active than the conventional Bu2Sn(OMe)2 catalysts. The addition of acid and/or base cocatalysts as well as optimization of the CO2 pressure improved the catalytic activity. The reaction is proposed to proceed through the formation of a dimeric intermediate composed of six-coordinated tin carbonate complexes.
Sn(Ot-Bu)4是一种用户友好的前催化剂,可直接将
二氧化碳和
甲醇合成
碳酸二甲酯。它的活性远高于传统的Bu2Sn(OMe)2催化剂。添加酸和/或碱的共催化剂,以及优化
二氧化碳的压力,提高了催化活性。反应预计通过形成一个由六配位
锡碳酸盐复合物组成的二聚体中间体进行。