A atom-efficient cross-coupling reaction of aryl iodides with triarylbismuths catalyzed by immobilization of palladium(II)-Schiff base complex in MCM-41
作者： Caifeng Xu , Lin Yin , Bin Huang , Haiyi Liu , Mingzhong Cai
DOI: 10.1016/J.TET.2016.01.052
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摘要: Abstract The first phosphine-free heterogeneous atom-efficient cross-coupling of aryl iodides with triarylbismuths was achieved in NMP using K 2 CO 3 as base at 110 °C the presence 2 mol % an MCM-41-immobilized palladium(II)-Schiff complex [MCM-41-N,N-Pd(OAc) ], yielding a variety unsymmetrical biaryls good to excellent yields. This new palladium catalyst exhibits high catalytic activity and can be recovered by simple filtration reaction solution recycled for least 10 consecutive trials without any decreases activity. Our system not only avoids use phosphine ligands, but also solves basic problem recovery reuse.
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