Fu, Wen-Fu published the artcileSynthesis, characterization, photoinduced isomerization, and spectroscopic properties of vinyl-1,8-naphthyridine derivatives and their copper(I) complexes, Related Products of naphthyridine, the publication is Inorganic Chemistry (2010), 49(10), 4524-4533, database is CAplus and MEDLINE.
Acetylamino-substituted 2-pyridinylvinyl-1,8-naphthyridine ligands and their copper(I) phosphine mono- and binuclear complexes were prepared and characterized by x-ray crystal structure determination A series of 2-(2-pyridinylvinyl) 1,8-naphthyridine ligands, 7-acetamido-2-(6-acetamido-2-pyridinylethenyl)-4-methyl-1,8-naphthyridine (L1), 2-(6-acetamido-2-pyridylethenyl)-1,8-naphthyridine (L2), 7-(6-acetamido-2-pyridinylethenyl)-5-methyl-1,8-naphthyridin-2(1H)-one (L3), 2-(2-diacetylamino-3-pyridinylethenyl)-7-(diacetylmethylene)-7,8-dihydro-1,8-naphthyridine (L4), and 2-(2-diacetylamino-3-pyridinylethenyl)-7-acetylpyrrolo[1,2-a]-1,8-naphthyridine (L5), as well as copper(I) phosphine complexes I, [CuL1(PCy3)](BF4) (1, I·BF4, M, Y1 void, Y = tricyclohexylphosphine), [Cu2L1(PPh3)4](BF4)2 [2, I·2BF4, M = Cu, Y = Y1 = (PPh3)2,], [Cu2L1(dppm)](BF4)2 (3, I·2BF4, M = Cu, Y-Y1 = dppm), and [Cu2(L1)(dcpm)](BF4)2 [4, I·2BF4, M = Cu, Y-Y1 = bis(dicyclohexylphosphino)methane] were prepared All these compounds, except for L1 and L2, were characterized by single crystal x-ray diffraction anal., and a comprehensive study of their spectroscopic properties involving TD-DFT theor. calculations is presented. An intramol. 1,3-hydrogen transfer takes place during the formation of L3 and L4, which in the case of the latter plays an important role in the 1,5-dipolar cyclization into L5. The spectral changes that originate from an intramol. charge transfer (ICT) in the form of a πpy→π*napy transition can be tuned through acid/base-controlled switching for L1-L3. Ligands L1-L3, complexes 1 and 2 undergo photochem. (E)-(Z)-double bond isomerization under 365 nm light irradiation due to their flexible structures. Quantum chem. calculations revealed that the dinuclear complexes with structural asymmetry exhibit different metal-to-ligand charge-transfer transitions.
Inorganic Chemistry published new progress about 14903-78-7. 14903-78-7 belongs to naphthyridine, auxiliary class 6.6_Aromatics,Naphthyridines, name is 2,7-Dimethyl-1,8-naphthyridine, and the molecular formula is C10H10N2, Related Products of naphthyridine.
Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem