Organic letters

Palladium− Indolylphosphine-Catalyzed Hiyama Cross-Coupling of Aryl Mesylates

CM So, HW Lee, CP Lau, FY Kwong

Index: So, Chau Ming; Lee, Hang Wai; Lau, Chak Po; Kwong, Fuk Yee Organic Letters, 2009 , vol. 11, # 2 p. 317 - 320

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Citation Number: 72

Abstract

Aryl mesylates are found to be applicable as electrophiles in organosilicon-mediated coupling reactions. The catalyst system comprising 2 mol% of Pd (OAc) 2 and CM-phos supporting ligand is highly effective in catalyzing Hiyama cross-coupling of various aryl and heteroaryl mesylates. Interesting acid additive effects show that the presence of 0.25− 0.50 equiv of acetic acid efficiently suppresses the mesylate decomposition and generally ...

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