Abstract
AbstractThe water‐insoluble and water‐soluble N‐heterocyclic carbene (NHC)–amine palladium complexes, Ipr‐Pd(deba)Cl and SO3‐Ipr‐Pd(deba)Cl, were synthesized. Both catalysts exhibit excellent activity in the phosphine‐free double carbonylation of aryl iodides with amines to produce α‐keto amides. Moreover, as the water‐soluble catalyst exhibits significant compatibility in the aqueous phase with the activities of different Pd‐NHC complexes, we conclude that the intramolecular amine ligand strongly affects the selectivity of the products in double carbonylation reaction and serves as an alternative of phosphine ligands.magnified image
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