期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 54, 期 40, 页码 11843-11847出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201505603
关键词
boronate esters; C-H activation; cross-coupling; homogeneous catalysis; nitrogen heterocycles
资金
- DFG
- Alexander von Humboldt Foundation
A zinc-catalyzed combined C-X and C-H borylation of aryl halides using B(2)pin(2) (pin = OCMe2CMe2O) to produce the corresponding 1,2-diborylarenes under mild conditions was developed. Catalytic C-H bond activation occurs ortho to the halide groups if such a site is available or meta to the halide if the ortho position is already substituted. This method thus represents a novel use of a group XII catalyst for C-H borylation. This transformation does not proceed via a free aryne intermediate, but a radical process seems to be involved.
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