Facile synthesis of a 2-(2′-pyridyl)-4-(methylcarboxy)quinoline ruthenium (II) based catalyst precursor for transfer hydrogenation of aromatic ketones

Sterically demanding pyridine-quinoline anchoring ligands as building blocks for copper(i)-based dye-sensitized solar cell (DSSC) complexes

“…Well-described research on the ruthenium( ii ) coordination chemistry of pqca and its methyl ester analogue ( pqcame ) has provided us with the required knowledge to perform the current research. 24–26 Methylation at the 6′ and 8 positions of the anchoring ligand may act as a protecting scaffold for the copper( i ) metal center. In this respect, stereochemical protection can be potentially offered by the benzo ring of the quinoline moiety, as was reported for [Cu( R DAB dipp )(L COOMe )][PF 6 ] ( R DAB dipp = 1,4-diaza-1,3-butadienes, R = H, Me; dipp = 2,6-diisopropylphenyl; L COOMe = methyl-2-(pyridin-2-yl)-quinoline-4-carboxylate) complexes, 27 and for the case of a number of ruthenium( ii ) complexes.…”