期刊
CATALYSIS COMMUNICATIONS
卷 33, 期 -, 页码 20-23出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2012.12.017
关键词
Transesterification; Methylation; Organotin oxide; Dimethyl carbonate; Bisphenol A
资金
- National Natural Science Foundation of China [21006071, 30900092, 12JCZDJC29800]
- Tianjin Natural Science Foundation of China [21006071, 30900092, 12JCZDJC29800]
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)(2)SnO (dibenzyltin oxide) and (C6H11)(2)SnO (dicyclohexyltin oxide) exhibited weaker catalytic activity but higher selectivity for C-methylation product formation. The pi-pi function between Ph2SnO and BPA provided more chances for their interaction, and pi-d interaction between phenyl ring and Sn resulted in catalyst having higher activity in transesterification and O-methylation. O-methylation product formation over Ph2SnO comes from transesterification product decomposition not from direct methylation of BPA with DMC. (C) 2013 Elsevier B.V. All rights reserved.
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