Mechanistic insights into catalytic carboxylic ester hydrogenation with cooperative Ru(II)-bis{1,2,3-triazolylidene}pyridine pincer complexes

The synthesis of novel bis(triazolyl)pyridine ligands and their coordination chemistry toward Ru(II) are discussed, and these complexes are shown to be active catalysts for the hydrogenation of carboxylic esters.169