Study on the reaction between bisphenol A and dimethyl carbonate over organotin oxide
作者:Xiaolong He、Zhenhuan Li、Kunmei Su、Bowen Cheng、Jun Ming
DOI:10.1016/j.catcom.2012.12.017
日期:2013.3
Organotin oxide was used to catalyze the reaction between BPA (bisphenol A) and DMC (dimethyl carbonate), and Ph2SnO (diphenyltin oxide) displays the excellent catalytic performance in transesterification and O-methylation. However, Bu2SnO (dibutyltin oxide), (PhCH2)2SnO (dibenzyltin oxide) and (C6H11)2SnO (dicyclohexyltin oxide) exhibited weaker catalytic activity but higher selectivity for C-methylation
有机锡氧化物被用来催化BPA(双酚A)和DMC(碳酸二甲酯)之间的反应,Ph 2 SnO(二苯基氧化锡)在酯交换反应和O-甲基化反应中表现出优异的催化性能。但是,Bu 2 SnO(二丁基氧化锡),(PhCH 2)2 SnO(二苄基氧化锡)和(C 6 H 11)2 SnO(二环己基氧化锡)表现出较弱的催化活性,但对形成C-甲基化产物的选择性较高。Ph 2之间的π–π函数SnO和BPA为它们的相互作用提供了更多机会,而苯环和Sn之间的π-d相互作用导致催化剂在酯交换和O-甲基化方面具有更高的活性。在Ph 2 SnO上形成O-甲基化产物的原因是酯交换产物的分解,而不是BPA与DMC的直接甲基化。