98627-05-5Relevant articles and documents
[FeFe]-Hydrogenase Mimic Employing κ2-C,N-Pyridine Bridgehead Catalyzes Proton Reduction at Mild Overpotential
Schippers, Esther C. F.,Nurttila, Sandra S.,Oudsen, Jean-Pierre H.,Tromp, Moniek,Dzik, Wojciech I.,van der Vlugt, Jarl Ivar,Reek, Joost N. H.
, p. 2510 - 2517 (2019/05/27)
Two novel κ2-C,N-pyridine bridged [FeFe]-H2ase mimics (1 and 2) have been prepared and are shown to function as efficient molecular catalysts for electrocatalytic proton reduction. The elemental and structural composition of the complexes are confirmed by NMR and IR spectroscopy, high-resolution mass spectrometry and single-crystal X-ray diffraction. Electrochemical investigations reveal that the complexes reduce protons at their first reduction potential, resulting in the lowest overpotential (120 mV) ever reported for [FeFe]-H2ase mimics in proton reduction catalysis when mild acid (phenol) is used as proton source.
THE REACTIONS OF SOME HALOGENATED PYRIDINES WITH METHOXYDE AND METHANETHIOLATE IONS IN DIMETHYLFORMAMIDE
Testaferri, Lorenzo,Tiecco, Marcello,Tingoli, Marco,Bartoli, Donatella,Massoli, Alberto
, p. 1373 - 1384 (2007/10/02)
The reactions of 2,6- and 2,5-dibromopyridines and of 2,3- and 3,5-dichloropyridines with sodium isopropanethiolate and methanethiolate afforded the products of mono- or of bis-substitution depending on the experimental conditions.The same pyridines reacted with sodium methoxide to give good yields of the mono-substituted products; bis-substitution occurred easily only in the case of the 2,6-dibromo- and of the 3,5-dichloropyridine.The syntheses of some methoxy thiomethoxypyridine, starting from the halogeno methoxypyridines or from the halogeno thiomethoxypyridines are also described.The bis-(alkylthio)pyridines can be fragmented by sodium in HMPA to give the bis(mercapto)pyridines.
