Improved palladium-catalyzed coupling reactions of aryl halides using saturated N-heterocarbene ligands
摘要：
The incorporation of saturated N-heterocyclic carbenes into palladium pre-catalysts gives high catalyst activity in the Suzuki coupling of aryl iodides, bromides and deactivated aryl chloride substrates, whereas the yield of the palladium catalyzed Heck reaction of deactivated aryl chlorides is negligible. The complexes were generated in the presence of Pd(OAc) 2 by in situ deprotonation of 1,3-dialkylimidazolinium salts LHX ( 1) which were characterized by conventional spectroscopic methods and elemental analyses.
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DOI：
10.1016/j.molcata.2003.08.002
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年份：
2004
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来源期刊
Molecular Catalysis
2004/02/01
引用走势
2005
被引量：32
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