Novel ternary block copolymerization of carbon dioxide with cyclohexene oxide and propylene oxide using zinc complex catalyst
β Scribed by Shaoyun Chen; Min Xiao; Shuanjin Wang; Dongmei Han; Yuezhong Meng
- Book ID
- 113073076
- Publisher
- Springer
- Year
- 2012
- Tongue
- English
- Weight
- 554 KB
- Volume
- 19
- Category
- Article
- ISSN
- 1022-9760
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π SIMILAR VOLUMES
Supercritical carbon dioxide was found to be a suitable substitute for halogenated organic solvents in its copolymerization with propylene oxide. The system was studied utilizing a heterogenous catalyst, zinc glutarate. The polymers were analyzed for selectivity in polycarbonate linkages by 'H NMR s
The homogeneous dinuclear zinc catalyst going back to the work of Williams et al. is to date the most active catalyst for the copolymerisation of cyclohexene oxide and CO(2) at one atmosphere of carbon dioxide. However, this catalyst shows no copolymer formation in the copolymerisation reaction of p
## Abstract Summary: The reaction of 2βlithioβ6βmethylpyridine or 2βlithiopyridine and the appropriate diaryl ketone followed by hydrolysis yields 6βMeβpyCAr~2~OH pyridine alcohols or pyCAr~2~OH pyridine alcohols. The reactions of zinc acetate with 1 equiv. of the lithiated products of the ligands