@inbook {1104, title = {Catalytic hydrogenation and hydrogenolysis of lignin model compounds using in-situ, water-soluble Ru/P(CH2OH)(3) systems}, booktitle = {Catalysis of Organic Reactions}, series = {Chemical Industries : A Series of Reference Books and Textbooks}, volume = {104}, year = {2005}, note = {ISI Document Delivery No.: BCH39Times Cited: 7Cited Reference Count: 32Proceedings Paper20th Conference on Catalysis of Organic ReactionsMAR 21-25, 2004Hilton Head Isl, SCOrgan React Catalysis Soc, WR GraceDavison, Parr Instrument, N Amer Catalysis Soc, ACS PRF, Engelhard, Degussa, AMC PMC, Merck \& Co, Eli Lilly \& Co, CRI Catalysts, Catalyst Grp, Umicore, Sud Chemie, Nova Mol Technologies Inc, Rohm \& Haas6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA}, pages = {135-143}, publisher = {Crc Press-Taylor \& Francis Group}, organization = {Crc Press-Taylor \& Francis Group}, address = {Boca Raton}, abstract = {Chemical modification of lignin without degradation of its polymeric structure could lower the production cost of higher quality paper, particularly with regard to stabilization toward light-induced yellowing, where the presence of so-called alpha-carbonyls and alpha-hydroxyl groups is of key importance. In order to explore which chromophore groups can be modified, hydrogenation of aromatic lignin model compounds has been tested, using as catalysts in-situ, water-soluble ruthenium species containing tris(hydroxymethyl)phosphine, P(CH2OH)(3). Such systems are active for hydrogenation of activated alkenes, carbonyl groups and, of more interest, hydrogenolysis of some aromatic alcohols. Catalyst activity depends on the phosphine/Ru ratio, the nature of the substrate (particularly substituents of the aromatic ring), and the solvents used. Thus, hydrogenation of a > C=O functionality can give either > CH(OH) or > CH2 depending on the nature of the arene fragment.}, keywords = {COMPLEXES, INHIBITION, mechanical pulps, MILD CONDITIONS}, isbn = {0-8247-2729-0}, url = {://000229314000016}, author = {Ezhova, M. B. and Lu, A. Z. and James, Brian R. and Hu, Thomas Q.}, editor = {Sowa, J. R.} } @inbook {1104, title = {Catalytic hydrogenation and hydrogenolysis of lignin model compounds using in-situ, water-soluble Ru/P(CH2OH)(3) systems}, booktitle = {Catalysis of Organic Reactions}, series = {Chemical Industries : A Series of Reference Books and Textbooks}, volume = {104}, year = {2005}, note = {ISI Document Delivery No.: BCH39Times Cited: 7Cited Reference Count: 32Proceedings Paper20th Conference on Catalysis of Organic ReactionsMAR 21-25, 2004Hilton Head Isl, SCOrgan React Catalysis Soc, WR GraceDavison, Parr Instrument, N Amer Catalysis Soc, ACS PRF, Engelhard, Degussa, AMC PMC, Merck \& Co, Eli Lilly \& Co, CRI Catalysts, Catalyst Grp, Umicore, Sud Chemie, Nova Mol Technologies Inc, Rohm \& Haas6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA}, pages = {135-143}, publisher = {Crc Press-Taylor \& Francis Group}, organization = {Crc Press-Taylor \& Francis Group}, address = {Boca Raton}, abstract = {Chemical modification of lignin without degradation of its polymeric structure could lower the production cost of higher quality paper, particularly with regard to stabilization toward light-induced yellowing, where the presence of so-called alpha-carbonyls and alpha-hydroxyl groups is of key importance. In order to explore which chromophore groups can be modified, hydrogenation of aromatic lignin model compounds has been tested, using as catalysts in-situ, water-soluble ruthenium species containing tris(hydroxymethyl)phosphine, P(CH2OH)(3). Such systems are active for hydrogenation of activated alkenes, carbonyl groups and, of more interest, hydrogenolysis of some aromatic alcohols. Catalyst activity depends on the phosphine/Ru ratio, the nature of the substrate (particularly substituents of the aromatic ring), and the solvents used. Thus, hydrogenation of a > C=O functionality can give either > CH(OH) or > CH2 depending on the nature of the arene fragment.}, keywords = {COMPLEXES, INHIBITION, mechanical pulps, MILD CONDITIONS}, isbn = {0-8247-2729-0}, url = {://000229314000016}, author = {Ezhova, M. B. and Lu, A. Z. and James, Brian R. and Hu, Thomas Q.}, editor = {Sowa, J. R.} } @article {380, title = {Hydroboration of coordinated dinitrogen: A new reaction for the N-2 ligand that results in its functionalization and cleavage}, journal = {Angewandte Chemie-International Edition}, volume = {41}, number = {19}, year = {2002}, note = {ISI Document Delivery No.: 604GZTimes Cited: 48Cited Reference Count: 30}, pages = {3709-3712}, type = {Article}, keywords = {ACTIVATION, COMPLEX, DINITROGEN, END-ON, EXCHANGE, hydroboration, iron, MILD CONDITIONS, nitrides, NITROGEN, nitrogen fixation, REDUCTION, SIDE-ON, tantalum, TUNGSTEN}, isbn = {1433-7851}, url = {://000178609900046}, author = {Fryzuk,Michael D. and MacKay, B. A. and Johnson, S. A. and Patrick, B. O.} }