Preparative Organic Chemistry
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ChemInform Abstract: Palladium/Imidazolium Salt Catalyzed Coupling of Aryl Halides with Hypervalent Organostannates.
First published: 27 May 2010
Abstract
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ChemInform Abstract
The cross-coupling of aryl halides (I) and (IV) with aryl (II) or vinyl stannanes (VI) proceeds smoothly in the presence of Bu4NF and a Pd(O-Ac)2—imidazolium salt catalytic system. It is shown that aryl chlorides need harsher reaction conditions and afford good yields only in the presence of electron-withdrawing substituents [cf. (IVc)].
