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Preparation of Synthetically Useful Chiral Building Blocks - 5-Alkylated gamma-Lactones via Catalytic Asymmetric Hydrogenation of4-Oxo Esters

100%

Juszkiewicz G. , Asztemborska M. , Jurczak J.

Polish Journal of Chemistry

2002

tom Vol. 76 / nr 12

1707-1711

Asymmetric hydrogenation of 4-oxo esters, catalyzed by cationic BINAP-Ru(II) complexes, afforded in a good overall yield and with excellent enantioselectivity (> 98% ee), the respective 5-alkylated -lactones, useful intermediates for the preparation of pheromones.

Synthesis, characterization and application of Ru(II) complexes containing pyridil ligands for dye-sensitized solar cells

86%

Dayan O. , Özdemir N. , Yakuphanoğlu F. , Şerbetci Z. , Bilici A.

Materials Science Poland

2020

tom Vol. 38, No. 3

450--458

In this research, a series of Ru(II) complexes, ([Ru(1-7)(ina)(NCS)2] (1-7=5-[6-(5-mercapto-1,3,4-oxadiazol-2-yl)pyridin- 2-yl]-1,3,4-oxadiazole-2-thiol’s, ina=isonicotinic acid) were synthesized and characterized using different spectroscopic and analytic techniques, such as NMR, UV, IR, CV and CHN. Also, the new complexes were used in dye-sensitized solar cells (DSSC) as sensitizers. Current-voltage characteristics showed that the modifications of ligands clearly affected DSSC yield. Additionally, DFT calculations were performed and showed locations of frontier molecular orbitals of the complexes. While the locations of HOMO and HOMO – 1 orbitals are on Ru(II) metal center and SCN− ligands, the location of LUMO and LUMO + 1 orbitals are on the 1-7 ligands.