Palladacyclic complexes bearing CNN-type ligands as catalysts in the Heck reaction

被引：26

作者：

Chen, CT ^{[1
]}

Chan, YS ^{[1
]}

Tzeng, YR ^{[1
]}

Chen, MT ^{[1
]}

机构：

[1] Natl Chung Hsing Univ, Dept Chem, Taichung 402, Taiwan

来源：

DALTON TRANSACTIONS | 2004年 / 17期

关键词：

D O I：

10.1039/b404798b

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Preparations of novel unsymmetrical, tridentate nitrogen ligand precursors, PhN=C(CMe2)(NPh)C=N(CH2)(2)NMe2 (1) and PhN=C(CMe2)(NPh)C=N(CH2)Py(2), are described. Treatment of 1 with 1 molar equiv. (COD)PdCl2 in the presence of NEt3 or with 1 molar equiv. Pd(OAc)(2) affords orthometallated palladium(II) complexes, [PhN=C(CMe2)-(N-eta(1)-Ph)C=N(CH2)(2)NMe2] PdX (X=Cl (3); X=OAc (4)), respectively. Compound 3 can be yielded via the reaction of 4 with an excess of LiCl in methanol. Treatment of 2 with 1 molar equiv. of (COD)PdCl2, Pd(OAc)(2) or Pd(TFA)(2) affords orthometallated palladium(II) complexes, [PhN=C(CMe2)(N-eta(1)-Ph)C=NCH2Py]PdX (X=Cl (5); X=OAc (6); X=TFA (7)), respectively. The crystal and molecular structures are reported for compounds 2, 3, 5 and 6. The application of these novel palladacyclic complexes to the Heck reaction with aryl halide substrates was examined.

引用

页码：2691 / 2696

页数：6

共 39 条

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[2]

2-6

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