@article {1481,
	title = {Catalyst poisoning in catalyzed imine hydrogenation: A novel zwitterionic Rh(I)/o-hydroxy-substituted imine complex},
	journal = {Journal of Molecular Catalysis a-Chemical},
	volume = {257},
	number = {1-2},
	year = {2006},
	note = {ISI Document Delivery No.: 089DITimes Cited: 3Cited Reference Count: 38Marcazzan, Paolo Patrick, Brian O. James, Brian R.},
	month = {Sep},
	pages = {26-30},
	type = {Article},
	abstract = {During investigation of the homogeneous H-2-hydrogenation of the ketimine (o-HOC6H4)C(Me)=NCH2Ph catalyzed by the [Rh(COD)(PPh3)(2)]PF6 precursor in MeOH at ambient conditions, we have isolated [Rh{eta(4)-(C6H4O)C(-)(Me)=N(+)(H)CHPh}(PPh3)(2)]PF6 (3), an unusual zwitterionic Rh complex in which the imine is coordinated via the C-4 part of the o-hydroxy-arene moiety in a quinoid form; this tautomer is generated via proton transfer from the O-atom to the N-atom within the molecular, benzenoid form. Precipitation of 3 from the MeOH solution, even under H-2, causes sequestration of the Rh and complete suppression of the catalytic activity. (In a previously studied system with the corresponding, non-hydroxy-substituted ketimine, PhC(Me) = NCH2Ph, the Rh was sequestered as an inactive o-metalated species). The solid state structure of 3 is retained in CH2Cl2 solution, but in MeOH and Me2CO reversible loss of the ketimine generates the cis-[Rh(PPh3)(2)(solvent)(2)]PF6 species. (c) 2006 Elsevier B.V. All rights reserved.},
	keywords = {amine, BEHAVIOR, CATALYSIS, CATIONIC RHODIUM COMPLEXES, CHEMICALS, FINE, HYDROGENATION, HYDROLYSIS, imine complex, LIGAND, LIGANDS, OLEFINS, phosphine, RHODIUM COMPLEX, SCHIFF-BASES, SELECTIVE HYDROGENATION, zwitterion},
	isbn = {1381-1169},
	url = {<Go to ISI>://000240860100005},
	author = {Marcazzan, P. and Patrick, B. O. and James, Brian R.}
}
@article {7398,
	title = {PHYSICAL AND STRUCTURAL STUDIES OF N-CARBOXYMETHYL-3-HYDROXY-2-METHYL-4-PYRIDINONE AND N-(PARA-METHOXYPHENYL)-3-HYDROXY-2-METHYL-4-PYRIDINONE},
	journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie},
	volume = {70},
	number = {3},
	year = {1992},
	note = {ISI Document Delivery No.: JD670Times Cited: 15Cited Reference Count: 40},
	month = {Mar},
	pages = {763-770},
	type = {Article},
	abstract = {{3-Hydroxy-1-carboxymethyl-2-methyl-4-pyridinone (Hcmp) and 3-hydroxy-1-(p-methoxyphenyl)-2-methyl-4-pyridine (Hpap) have been prepared and studied by single crystal X-ray diffraction. Crystals of Hcmp are monoclinic},
	keywords = {2-DIMETHYL-3-HYDROXYPYRID-4-ONE L1, 3-HYDROXY-4-PYRIDINONE, 3-HYDROXY-4-PYRIDINONES, aluminum, CHELATOR 1, COMPLEXES, CONSTANT, CRYSTALLOGRAPHY, gallium, hydrogen bonding, indium, iron, LONG-TERM TRIAL, protonation, solid state, zwitterion},
	isbn = {0008-4042},
	url = {<Go to ISI>://A1992JD67000010},
	author = {Zhang, Z. H. and Rettig, S. J. and Orvig, Chris}
}
