Negishi Coupling of Secondary Alkylzinc Halides with Aryl Bromides and Chlorides
摘要:
An efficient palladium-catalyzed process has been developed for Negishi coupling of secondary alkylzinc halides with a wide range of aryl bromides and activated aryl chlorides. A palladium catalyst composed of a new biaryldialkylphosphine ligand, CPhos, effectively promotes the rate of the reductive elimination step relative to the rate of the undesired beta-hydride elimination. The broad substrate scope and excellent ratio of the desired secondary to the undesired primary coupling product make this method a powerful and reliable tool for C(sp(3))-C(sp(2)) bond formation.
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关键词:
reactions of organo‐metal compounds hydrocarbons (benzene compounds pyridine derivatives benzopyran derivatives
DOI:
10.1002/chin.200945051
被引量:
年份:
2009




























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