Tetrahedron Letters

Iridium phosphine abnormal N-heterocyclic carbene complexes in catalytic hydrogen transfer reactions

X Gong, H Zhang, X Li

Index: Gong, Xue; Zhang, Hong; Li, Xingwei Tetrahedron Letters, 2011 , vol. 52, # 43 p. 5596 - 5600

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Citation Number: 29

Abstract

Several iridium complexes bearing chelating abnormal N-heterocyclic carbenes (NHCs) are shown to be active catalysts for transfer hydrogenation of ketones or enones, dehydrative C– C coupling between primary and secondary alcohols, and dehydrogenation of benzyl alcohol to benzyl benzoate. In the transfer hydrogenation of acetophenone, abnormal NHC complexes give higher activity than a normal analogue. Dehydrative C–C coupling ...