Three new Pd-pyridine enlianced precatalyst preparation stabilization and initiation(PEPPSI)complexes with halogen groups on the N-heterocyclic carbene and pyridine were prepared.Tlieir structures have been clearly ch...Three new Pd-pyridine enlianced precatalyst preparation stabilization and initiation(PEPPSI)complexes with halogen groups on the N-heterocyclic carbene and pyridine were prepared.Tlieir structures have been clearly characterized by nuclear magnetic resonance spectroscopy and X-ray single-crystal di fraction.The e fleets of the electronic properties of halogen groups on the catalytic activity in the Suzuki-Miyaura cross-coupling of aryl chlo-rides were investigated.These Pd-PEPPSI complexes could catalyze the cross-coupling reaction efficiently with a low catalyst loading(0.05%,molar ratio)at room temperature and the products were obtained in high yields.展开更多
基金Supported by the Natural Science Foundation of Tianjin City,China(No.16JCYBJC 19700)the National Natural Science Foundation of China(No.21771138)the Foundation of Development Program of Future Expert in Tianjin Normal University,China(No.WLQR201704).
文摘Three new Pd-pyridine enlianced precatalyst preparation stabilization and initiation(PEPPSI)complexes with halogen groups on the N-heterocyclic carbene and pyridine were prepared.Tlieir structures have been clearly characterized by nuclear magnetic resonance spectroscopy and X-ray single-crystal di fraction.The e fleets of the electronic properties of halogen groups on the catalytic activity in the Suzuki-Miyaura cross-coupling of aryl chlo-rides were investigated.These Pd-PEPPSI complexes could catalyze the cross-coupling reaction efficiently with a low catalyst loading(0.05%,molar ratio)at room temperature and the products were obtained in high yields.
