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Coordination and Catalytic Activity of Ruthenium Complexes Containing Tridentate P,N,O Ligands by Chun‐Chin Lee; Wan‐Yi Chu; Yi‐Hong Liu; Shie‐Ming Peng; Shiuh‐Tzung Liu is a Chemistry article available to read on EtoBox.

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## Abstract The coordination chemistry of Ru^II^ ions with [2‐(diphenylphosphanyl)‐__N__‐(__o__‐hydroxybenzylidene)]aniline (PNO‐H) and the methylated analogue PNO‐Me have been studied. Thus, [(PNO)RuCl(dmso)~2~] (1), [(PNO)~2~Ru] (2), [(PNO)RuCl(PPh~3~)] (3) and [(PNO)RuCl(CO)~2~] (4) were synthesized by reactions of various Ru^II^ precursors with PNO‐H. Treatment of PNO‐Me with [RuCl~2~(dmso)~4~] resulted in in the formation of [__P__,__N__‐(PNO‐Me)Ru(dmso)~2~Cl~2~] (5). However, complexation of PNO‐Me with [RuCl~2~(CO)~3~(THF)] (THF = tetrahydrofuran) provided a mixture of [__P__,__N__‐(PNO‐Me)Ru(CO)~2~Cl~2~] (6) and 4 because __O__‐demethylation took place during the reaction. All of the Ru^II^ complexes have been characterized by elemental analysis and spectroscopic techniques, as well as X‐ray crystal structural analysis for 2, 4 and 6. The ruthenium complexes investigated in this work, except 2, are good precatalysts for the reductive amination of amine with alcohols, and 4 appears to be the best. Moreover, 4 can catalyze the direct amination of nitrobenzene with benzyl alcohol to the corresponding secondary amine.

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Author

Chun‐Chin Lee; Wan‐Yi Chu; Yi‐Hong Liu; Shie‐Ming Peng; Shiuh‐Tzung Liu

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Ltd.; Wiley (ISSN 1434-1948)

Published

2011

Language

EN

Field

Chemistry (Physical Sciences)