Ruthenium(II) complexes containing 2-diphenylphosphinobenzaldehyde: synthesis and catalytic activity in transfer hydrogenation§
摘要:
The reaction of dimers [Ru(eta(6)-arene)(mu-Cl)Cl](2) (arene = C6H6 (2a); 1-Pr-i-4-C6H4Me (2b) 1,2,4,5-C6H2Me4 (2c); C6Me6 (2d)) with 2-diphenylphosphinobenzaidehyde (1) yields the neutral complexes [Ru(eta(6)-arene)Cl-2(kappa(1)-P-2-Ph2PC6H4CH=O)] (3a-d). Treatment of compounds 3a-d with one equivalent of AgSbF6 leads to the formation of the monocationic derivatives [Ru(eta(6)-arene)Cl(kappa(2)-P,O-2-Ph2PC6H4CH=O)][SbF6] (4a-d). When 3a-d are treated of AgSbF6 in presence of acetone, the dicationic complexes [Ru(eta(6)-arene)(kappa(1)-O-Me2C=O)(kappa(2)-P,O-2-Ph2PC6H4CH=O)][SbF6](2) (arene=C6H6 (5a); 1-Pr-i-4-C6H4Me (5b); 1,2,4,5-C6H2Me4 (5c), C6Me6 (5d)) are obtained, Complexes 3-5a-d have proven to be active catalysts in transfer hydrogenation of acetophenone by propan-2-ol. (C) 2003 Elsevier B.V. All rights reserved.
Ruthenium(II) complexes containing 2-diphenylphosphinobenzaldehyde: synthesis and catalytic activity in transfer hydrogenation§
摘要:
The reaction of dimers [Ru(eta(6)-arene)(mu-Cl)Cl](2) (arene = C6H6 (2a); 1-Pr-i-4-C6H4Me (2b) 1,2,4,5-C6H2Me4 (2c); C6Me6 (2d)) with 2-diphenylphosphinobenzaidehyde (1) yields the neutral complexes [Ru(eta(6)-arene)Cl-2(kappa(1)-P-2-Ph2PC6H4CH=O)] (3a-d). Treatment of compounds 3a-d with one equivalent of AgSbF6 leads to the formation of the monocationic derivatives [Ru(eta(6)-arene)Cl(kappa(2)-P,O-2-Ph2PC6H4CH=O)][SbF6] (4a-d). When 3a-d are treated of AgSbF6 in presence of acetone, the dicationic complexes [Ru(eta(6)-arene)(kappa(1)-O-Me2C=O)(kappa(2)-P,O-2-Ph2PC6H4CH=O)][SbF6](2) (arene=C6H6 (5a); 1-Pr-i-4-C6H4Me (5b); 1,2,4,5-C6H2Me4 (5c), C6Me6 (5d)) are obtained, Complexes 3-5a-d have proven to be active catalysts in transfer hydrogenation of acetophenone by propan-2-ol. (C) 2003 Elsevier B.V. All rights reserved.