Effect of triarylphosphane ligands on the rhodium‐catalyzed hydrosilylation of alkene |
| |
| Authors: | Mei Xue Jiayun Li Jiajian Peng Ying Bai Guodong Zhang Wenjun Xiao Guoqiao Lai |
| |
| Institution: | Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, China |
| |
| Abstract: | A series of triarylphosphanes ( 1a , 2a , 3a , 4a , 5a , 6a , 7a , 8a , 9a , 10a , 11a ) have been synthesized. An X‐ray crystal structure analysis of (2‐bromophenyl)diphenylphosphane ( 1a ) unambiguously confirmed the constitution of the functionalized phosphane. The hydrosilylation reaction of styrene with triethoxysilane catalyzed with RhCl3/triarylphosphane was studied. In comparison with the classic Wilkinson's catalyst, rhodium complexes with functionalized triarylphosphane ligands are characterized by a very high catalytic effectiveness for the hydrosilylation of alkene. Among these catalysts tested, RhCl3/diphenyl(2‐(trimethylsilyl)phenyl)phosphane ( 8a ) exhibited excellent catalytic properties. Using this silicon‐containing phosphane ligand for the rhodium‐catalyzed hydrosilylation of styrene, both higher conversion of alkene and higher β‐adduct selectivity were obtained than with Wilkinson's catalyst. Copyright © 2014 John Wiley & Sons, Ltd. |
| |
| Keywords: | triarylphosphane hydrosilylation rhodium complex alkene |
|
|
