期刊
ADVANCED SYNTHESIS & CATALYSIS
卷 350, 期 11-12, 页码 1791-1795出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.200800244
关键词
benzimidazoles; carbenes; Heck reaction; palladium; Suzuki coupling
资金
- Alexander-von-Humboldt-Foundation
- Konrad-Adenauer Foundation
- [DFG (SFG 624)]
A novel pyridine-bridged bis-benzimidazolylidene CNC pincer complex 1 was synthesized from cheap, commercially available precursors under microwave assistance in moderate yield. It catalyzes cross-coupling reactions of aryl halides with alkyl acrylates (Heck reaction) and phenylboronic acid (Suzuki reaction) under aerobic conditions with extremely high turn-over numbers (frequencies) indicating that a planar extension of the pi-system by henzannelation significantly increases the catalytic activity even with trace amounts of catalyst loading.
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