A method for making aromatic organic carbonate, such as diphenyl carbonate is provided which employs a transition metal catalyst in the form of a palladium catalyst mixture. The palladium catalyst can be used in combination with an organic cocatalyst, such as a terpyridine and a cobalt cocatalyst in the form of a cobalt complex containing a pentadentate ligand. The aromatic organic carbonate is separated from the carbonylation reaction mixture as a 1:1 molar adduct of aromatic organic carbonate such as diphenyl carbonate and aromatic organic hydroxy compound, such as phenol. The transition metal catalyst has been found to be recyclable allowing for the introduction of make up aromatic organic hydroxy compound into the reactor under ambient conditions.
本发明提供了一种制造芳香族有机
碳酸盐(如
碳酸二苯酯)的方法,该方法采用了
钯催化剂混合物形式的过渡
金属
催化剂。
钯催化剂可与有机助
催化剂(如三联
吡啶)和
钴助
催化剂结合使用,
钴助
催化剂的形式为含有正五价配位体的
钴络合物。芳香族有机
碳酸盐以芳香族有机
碳酸盐(如
碳酸二苯酯)和芳香族有机羟基化合物(如
苯酚)1:1 摩尔加合物的形式从羰基化反应混合物中分离出来。过渡
金属
催化剂可以循环使用,因此可以在环境条件下向反应器中添加芳香族有机羟基化合物。