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The Catalytic Cross-Coupling of Unactivated Arenes(Science)
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The Catalytic Cross-Coupling of Unactivated Arenes David R. Stuart and Keith Fagnou* Science.Magazine.May.25.2007 The industrially important coupling of aromatic compounds has generally required differential prefunctionalization of the arene coupling partners with a halide and an electropositive group. Here we report that palladium, in conjunction with a copper oxidant, can catalyze the cross-coupling of N-acetylindoles and benzenes in high yield and high regioselectivity across a range of indoles without recourse to activating groups. These reactions are completely selective for arene cross-coupling, with no products arising from indole or benzene homo-coupling detected by spectroscopic analysis. This efficient reactivity should be useful in the design of other oxidative arene cross-couplings as well. [ Last edited by daiqiguang on 2007-6-2 at 19:12 ] |
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ln79562楼
2007-06-02 19:37
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顶!!!!!!!!!!!!!!!










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