کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
50560 | 46802 | 2013 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Study on the reaction between bisphenol A and dimethyl carbonate over organotin oxide Study on the reaction between bisphenol A and dimethyl carbonate over organotin oxide](/preview/png/50560.png)
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 product formation. The π–π function between Ph2SnO and BPA provided more chances for their interaction, and π–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.
Figure optionsDownload as PowerPoint slideHighlights
► Ph2SnO selectively catalyzes O-methylation product formation from BPA and DMC.
► Alkyltin oxide catalyzes C-methylation of BPA with DMC.
► Ph2SnO catalyzes transesterification products decomposition into O-methylation products.
► Transesterification products are more stable over alkyltin oxide.
Journal: Catalysis Communications - Volume 33, 5 March 2013, Pages 20–23