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化学工业与工程 2013, Vol. 30 Issue (6) :15-26    DOI:
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C-H Bond Activation of Bisimines by Palladium (II) and Platinum (II). Synthesis, Characterization of Bis(imino)arylpalladium (II) Pincer Complexes and Their Application in Carbon-Carbon Cross Coupling Reactions
 CHEN  Rong, CHEN  Ying, LIU  Fang, LI  Ping, HU  Zhao-xia, WANG  Hong-xing
(Department of Chemistry, College of Science, Tianjin University, Tianjin 300072, China)
C-H Bond Activation of Bisimines by Palladium (II) and Platinum (II). Synthesis, Characterization of Bis(imino)arylpalladium (II) Pincer Complexes and Their Application in Carbon-Carbon Cross Coupling Reactions
 CHEN  Rong, CHEN  Ying, LIU  Fang, LI  Ping, HU  Zhao-xia, WANG  Hong-xing
(Department of Chemistry, College of Science, Tianjin University, Tianjin 300072, China)

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摘要 The reactions of a variety of 4,6-dimethyl-1,3-bis(imino)benzenes 2a-g derived from 4, 6-dimethylisophthalaldehyde and anilines or benzylamine with palladium (II) acetate in anhydrous acetic acid under nitrogen were investigated. Experiment results demonstrate that cyclopalladations in such condition are applicable not only to the present system under study but also to the 5-substituted bis(imino)benzenes 6, 7. The molecular structure of 3b was further confirmed by X-Ray single-crystal diffraction. 3b Crystallizes in orthorhombic, space group P2(1)2(1)2(1) with a=0.734 53(8), b=1.683 8(3), c=1.691 7(2) nm, α=β=γ=90°. Treatment of 2b with K2PtCl4 in anhydrous acetic acid affords the corresponding NCN-platinum pincer. Carbon-carbon cross coupling reactions catalyzed with 3b were investigated. These palladium complexes have been proved to be high effective catalysts for Suzuki coupling reaction.
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CHEN Rong
CHEN Ying
LIU Fang
LI Ping
HU Zhaoxia
WANG Hongxing
关键词cyclopalladation   pincer   bisimines   cross coupling     
Abstract: The reactions of a variety of 4,6-dimethyl-1,3-bis(imino)benzenes 2a-g derived from 4, 6-dimethylisophthalaldehyde and anilines or benzylamine with palladium (II) acetate in anhydrous acetic acid under nitrogen were investigated. Experiment results demonstrate that cyclopalladations in such condition are applicable not only to the present system under study but also to the 5-substituted bis(imino)benzenes 6, 7. The molecular structure of 3b was further confirmed by X-Ray single-crystal diffraction. 3b Crystallizes in orthorhombic, space group P2(1)2(1)2(1) with a=0.734 53(8), b=1.683 8(3), c=1.691 7(2) nm, α=β=γ=90°. Treatment of 2b with K2PtCl4 in anhydrous acetic acid affords the corresponding NCN-platinum pincer. Carbon-carbon cross coupling reactions catalyzed with 3b were investigated. These palladium complexes have been proved to be high effective catalysts for Suzuki coupling reaction.
Keywordscyclopalladation   pincer   bisimines   cross coupling     
Received 2012-10-17;
Corresponding Authors: Wang hongxin, Fax: 22-27403475, E-mail: hongxing_wang@tju.edu.cn.      Email: hongxing_wang@tju.edu.cn
About author: Wang hongxin, Fax: 22-27403475, E-mail: hongxing_wang@tju.edu.cn.
引用本文:   
CHEN Rong, CHEN Ying, LIU Fang, LI Ping, HU Zhao-xia, WANG Hong-xing.C-H Bond Activation of Bisimines by Palladium (II) and Platinum (II). Synthesis, Characterization of Bis(imino)arylpalladium (II) Pincer Complexes and Their Application in Carbon-Carbon Cross Coupling Reactions[J].  化学工业与工程, 2013,30(6): 15-26
CHEN Rong, CHEN Ying, LIU Fang, LI Ping, HU Zhao-xia, WANG Hong-xing.C-H Bond Activation of Bisimines by Palladium (II) and Platinum (II). Synthesis, Characterization of Bis(imino)arylpalladium (II) Pincer Complexes and Their Application in Carbon-Carbon Cross Coupling Reactions[J].  Chemcial Industry and Engineering, 2013,30(6): 15-26
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