A core-shell type of polymer-supported N-heterocyclic carbene (NHC) palladium catalyst was applied to Sonogashira cross-coupling reactions without copper cocatalyst under ambient atmosphere. This supported NHC-palladium complex efficiently catalyzed the copper-free Sonogashira reaction of various aryl iodides and bromides with terminal alkynes; the reaction exhibited high dependency on the temperature and the amount of base as well as its nature. In addition, this heterogeneous catalyst exhibited good reusability for the copper-free Sonogashira reaction. (c) 2007 Elsevier Ltd. All rights reserved.
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E China Normal Univ, Dept Chem, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R ChinaE China Normal Univ, Dept Chem, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R China
Yu Tao
Li Ying
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E China Normal Univ, Dept Chem, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R ChinaE China Normal Univ, Dept Chem, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R China
Li Ying
Yao Chengfu
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E China Normal Univ, Dept Chem, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R ChinaE China Normal Univ, Dept Chem, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R China
Yao Chengfu
Wu Haihong
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E China Normal Univ, Dept Chem, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R ChinaE China Normal Univ, Dept Chem, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R China
Wu Haihong
Liu Yueming
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E China Normal Univ, Dept Chem, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R ChinaE China Normal Univ, Dept Chem, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R China
Liu Yueming
Wu Peng
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E China Normal Univ, Dept Chem, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R ChinaE China Normal Univ, Dept Chem, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R China
机构:
Univ Sussex, Dept Chem, Brighton BN1 9QJ, E Sussex, EnglandUniv Sussex, Dept Chem, Brighton BN1 9QJ, E Sussex, England
Gallop, Christopher W. D.
Chen, Ming-Tsz
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Univ Hawaii Manoa, Dept Chem, Honolulu, HI 96822 USAUniv Sussex, Dept Chem, Brighton BN1 9QJ, E Sussex, England
Chen, Ming-Tsz
Navarro, Oscar
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Univ Sussex, Dept Chem, Brighton BN1 9QJ, E Sussex, England
Univ Hawaii Manoa, Dept Chem, Honolulu, HI 96822 USAUniv Sussex, Dept Chem, Brighton BN1 9QJ, E Sussex, England