期刊
ORGANOMETALLICS
卷 27, 期 20, 页码 5347-5352出版社
AMER CHEMICAL SOC
DOI: 10.1021/om800566j
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资金
- Advanced Molecular Transformations of Carbon Resources
- Global COE Program for Chemistry Innovation
- Japan Science Society
Exo- and endo-isomers of an ester-substituted norbornene derivative [5-norbornene carboxylic acid methyl ester (NBE)] are compared in the addition polymerization using (Bu3P)-Bu-t-ligated palladium complex 1. The polymerization rate of endo-NBE is slower than that of the corresponding exo-NBE. Each of exo- and endo-NBE inserted complexes was synthesized and the insertion rate constant was determined for exo-NBE and endo-NBE. These experiments revealed that the consecutive exo-NBE insertion was faster than the consecutive endo-NBE insertion by 2-fold. On the other hand, in polymerization of an exo-NBE/endo-NBE (1: 1) mixture, consumption rates of exo-NBE and endo-NBE were almost equal and the production rate of the poly-NBE from this mixture was almost the same as that of homopolymerization of exo-NBE.
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