Effect of the Para-substituent of the Tridentate Pyridine-based Ru(Ⅱ) Complex upon the Catalytic Activity in Transfer Hydrogenation
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Effect of the Para-substituent of the Tridentate Pyridine-based Ru(Ⅱ) Complex upon the Catalytic Activity in Transfer Hydrogenation
Chinese Journal of Chemical EngineeringVol. 19, Issue 1, Pages: 169-172(2011)
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State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology,Nanjing,China,10009
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Published:2011
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-substituent of the Tridentate Pyridine-based Ru(Ⅱ) Complex upon the Catalytic Activity in Transfer Hydrogenation[J]. Chinese Journal of Chemical Engineering, 2011, 19(1): 169-172.
DOI:
-substituent of the Tridentate Pyridine-based Ru(Ⅱ) Complex upon the Catalytic Activity in Transfer Hydrogenation[J]. Chinese Journal of Chemical Engineering, 2011, 19(1): 169-172.DOI:
Effect of the Para-substituent of the Tridentate Pyridine-based Ru(Ⅱ) Complex upon the Catalytic Activity in Transfer Hydrogenation
Three stable 4-substituted pyridine-based ruthenium(Ⅱ)complexes[RuCl
2
(PPh
3
)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.
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