Photocatalytic Hydrogen Production Of Ruthenium Bipyridine Complexes And Catalytic Hydrogenation System Of 1,8-Naphthyridine Derivatives

Ruthenium bipyridine complexes have been widely used in the various photocatalytic reactions such as hydrogen evolution from water,water oxidation,organic synthesis and carbon dioxide reduction.During these processes,ruthenium bipyridine complexes were used as photosensitizer or catalyst.In this thesis,two ruthenium bipyridine complexes were obtained,and they were used as photosensitizer to producting hydrogen in photocatalytic.In addition,reduction of arenes were of fundamental interest in organic synthesis and applied on large scale for the production of a variety of fine and bulk chemicals.Among the various arenes,selective hydrogenation of N-heteroarenes was a long-standing scientific and technological challenge due to the high resonance stability of these substrates or their reduced products.Despite the development of several noble metals and their complexes catalysts,for example,Ni?Pd?Ru?Pt?Rh?Os complexes,in general harsh conditions such as higt temperature and high pressure lead to high reaction cost and difficult technology.Thus,the search for the advanced materials that enables the hydrogenation of N-heteroarenes with sufficient activity and high selectivity remains a challenging task.This paper were mainly composed of following parts:1?Two ruthenium bipyridyl complexes C1?C2 were synthesized,which were characterized fully by ESI-MS,1HNMR,13 CNMR,UV-vis spectroscopy and voltammetry toward their structures,photophysical properties and electrochemical properties under the condition of DMF as solvent.And the hydrogen production under different conditions were studied by using them as photosensitizer respectively and Fe?TEOA?2Cl₃ as catalyst.2?Ni had be cloud electronic density in Ni₂P,which was convenient to dissociate and adsorb of H₂.As well as,Ni₂P was simple and easy to get,furthermore it was stable,so it was used as a robust catalyst for the hydrolytic dehydrogenation of Ammonia–Borane under mild conditions.Ni₂P was prepared and five 1,8-naphthyridine derivatives were reduced by Ni₂P and combination of dehydrogenation of ammonia borane under room temperature and air atmosphere.Main products were characterized by ¹HNMR,¹³CNMR and ESI-MS.In addition,the influence on the catalytic reaction was certain about electron-donating or electron-withdrawing groups through the comparison of five kinds of main products.