期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 57, 期 51, 页码 16648-16653出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201806427
关键词
bimetallic reagents; diazonium salts; gold catalysis; Hiyama coupling; photochemistry
资金
- National Natural Science Foundation of China [21702098]
- 1000-Youth Talents Plan
- Fundamental Research Funds for the Central Universities [020514380158]
- Landesgraduiertenforderung of the state of Baden-Wurttemberg, Germany
Organoboron compounds are versatile synthetic building blocks. We herein report a new strategy, a photochemical gold-catalyzed chemo-selective Hiyama arylation of B,Si bifunctionalized reagents with diazonium salts, which is orthogonal to common strategies and therefore a unique tool for synthesis of valuable biarylboronates. With this new methodology a wide array of diversely functionalized sp(2)- and sp(3)-hybridized biarylboronates were obtained. Notably, the synergism of gold catalysis with copper catalysis or palladium catalysis, allows for one-pot iterative C-X (heteroatom) and C-C couplings for the rapid assembly of several simple fragments to relatively complex molecules. Mechanistic studies indicated that photosensitizer-free conditions were superior to gold/Ru(bpy)(3)Cl-2 dual catalysis.
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