Chin.J.Chem.Eng. ›› 2011, Vol. 19 ›› Issue (1): 169-172.

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Effect of the Para-substituent of the Tridentate Pyridine-based Ru(Ⅱ) Complex upon the Catalytic Activity in Transfer Hydrogenation

YANG Gang, QING Dongling, GAO Hongfei, XU Nanping   

  1. State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 10009, China
  • Received:2010-04-21 Revised:2010-12-17 Online:2011-02-28 Published:2011-02-28
  • Supported by:

    Supported by the National Natural Science Foundation of China(20576052);the Joint Innovation Fund of Jiangsu Province(BY2009107);the National Basic Research Program of China(2003CB615707)

Effect of the Para-substituent of the Tridentate Pyridine-based Ru(Ⅱ) Complex upon the Catalytic Activity in Transfer Hydrogenation

杨刚, 秦冬玲, 高宏飞, 徐南平   

  1. State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 10009, China
  • 通讯作者: YANG Gang, E-mail: yanggang@njut.edu.cn
  • 基金资助:

    Supported by the National Natural Science Foundation of China(20576052);the Joint Innovation Fund of Jiangsu Province(BY2009107);the National Basic Research Program of China(2003CB615707)

Abstract: Three stable 4-substituted pyridine-based ruthenium(Ⅱ)complexes[RuCl2(PPh3)L](L=4-R-2,6-bis (diethylaminomethylene)pyridine,R=Br,H or allyloxy)were synthesized.The catalytic activities of the complexes toward transfer hydrogenation from alcohols to ketones were investigated.The electronic effects of the para-substituent in the pyridyl ring were probed and we found that the electron-donating group increased the catalytic activity.The result suggests that an electron-donating group is probably preferential for linking the catalytic ruthenium complex and the chemically inert supporting molecules such as a carbosilane dendrimer.

Key words: ruthenium(Ⅱ)complexes, tridentate, transfer hydrogenation, catalyst

摘要: Three stable 4-substituted pyridine-based ruthenium(Ⅱ)complexes[RuCl2(PPh3)L](L=4-R-2,6-bis (diethylaminomethylene)pyridine,R=Br,H or allyloxy)were synthesized.The catalytic activities of the complexes toward transfer hydrogenation from alcohols to ketones were investigated.The electronic effects of the para-substituent in the pyridyl ring were probed and we found that the electron-donating group increased the catalytic activity.The result suggests that an electron-donating group is probably preferential for linking the catalytic ruthenium complex and the chemically inert supporting molecules such as a carbosilane dendrimer.

关键词: ruthenium(Ⅱ)complexes, tridentate, transfer hydrogenation, catalyst