gem-Selective Cross-Dimerization and Cross-Trimerization of Alkynes with Silylacetylenes Promoted by a Rhodium-Pyridine-N-Heterocyclic Carbene Catalyst

被引:29
作者
Azpiroz, Ramon [1 ]
Rubio-Perez, Laura [1 ]
Castarlenas, Ricardo [1 ]
Perez-Torrente, Jesus J. [1 ]
Oro, Luis A. [1 ]
机构
[1] Univ Zaragoza, CSIC, Dept Quim Inorgan, Fac Ciencias,ISQCH, E-50009 Zaragoza, Spain
关键词
CC coupling; dimerization; trimerization; carbenes; rhodium; C-H ACTIVATION; TERMINAL ALKYNES; INTERNAL ALKYNES; COMPLEXES; PALLADIUM; TRIISOPROPYLSILYLACETYLENE; ADDITIONS; STRATEGY; IRIDIUM; ACCESS;
D O I
10.1002/cctc.201402327
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The gem-selective cross-dimerization and -trimerization of silylacetylenes with alkynes through CH activation using a rhodium(I)-pyridine-N-heterocyclic carbene catalyst have been developed. This reaction is applied to various aliphatic or aromatic terminal alkynes, internal alkynes, and gem-1,3-disubsituted enynes to afford the corresponding enynes and dienynes with high regio- and stereoselectivities and in good isolated yields (up to 91%).
引用
收藏
页码:2587 / 2592
页数:6
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