Journal
ORGANOMETALLICS
Volume 35, Issue 16, Pages 2655-2663Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.organomet.6b00391
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Funding
- Foundation for Distinguished Young Talents in Higher Education of Guangdong [Yq2013101]
- NSFC [21203256, 21473261]
- Guangdong Natural Science Funds for Distinguished Young Scholar [2015A030306027]
- Project of innovation for enhancing Guangdong Pharmaceutical University
- provincial experimental teaching demonstration center of chemistry & chemical engineering
- NSFC-Guangdong for Supercomputing Applications
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A series of sterically encumbered tetraarylimidazolium carbene Pd-PEPPSI complexes were conveniently prepared and fully characterized. These sterically encumbered Pd-PEPPSI complexes act as active precatalysts for the direct arylation of imidazoles with aryl bromides under aerobic conditions. The catalytic performance of Pd-PEPPSI complexes in cross-coupling processes is investigated. Under the optimal protocols, the cross-coupling reactions regioselectively produced C5-arylation products in moderate to excellent yields, which could tolerate a wide range of functional aryl bromides.
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