5421-92-1Relevant articles and documents
Synthesis, crystal structure, and characterization of a novel coordinated polymer [Cu2I4(Nppch)2]
Wang, Hong-Mei,Xu, Na,Niu, Yun-Yin
, p. 1086 - 1090 (2011)
Solution reaction of CuI and KI in DMF/H2O with a solution of Nppch in CH3OH/H2O gave rise to a three-dimensional (3D) supramolecular compound based on a binuclear [Cu2I 4(Nppch)2] unit (Nppch = N-(4-pyridyl) pyridinium chloride hydrochloride). The crystal structural analysis indicated that the complex crystallized in a monoclinic space group, P2(1)/n, a = 9.6821(19) A, b = 11.414(2) A, c = 12.096(2) A, β = 103.17(3)°, V = 1301.6(4) A3, Z = 2. The complex possessed a novel three-dimensional supramolecular framework formed by hydrogen bonds among repeating [Cu 2I4(Nppch)2] binuclear units. The compound was further characterized with infrared (IR) spectra, ultraviolet spectral properties, thermal analysis, and fluorescence properties. Copyright Taylor & Francis Group, LLC.
Use of the graebe-ullmann reaction in the synthesis of 8-methyl-γ- carboline and isomeric aromatic aza-γ-carbolines
Alekseev,Kurkin,Yurovskaya
, p. 1235 - 1250 (2013/03/13)
Two variants of the Graebe-Ullmann reaction were used to obtain 8-methyl-5H-pyrido[4,3-b]indole (8-methyl-γ-carboline) and the conditions for this reaction were optimized. The feasibility of using this method was studied for the synthesis of a series of isomeric aromatic aza-γ- carbolines from the corresponding 1-(pyridyl)-1H-1,2,3-triazolo[4,5-c]pyridines under thermal and microwave irradiation conditions.
Process for producing 4-dimethyl amino pyridine (4-DMAP)
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Page column 5, (2008/06/13)
An improved process for producing 4-dimethyl amino pyridine is provided. The process comprises quaternizing pyridine with a suitable quaternizing agent in the presence of organic solvent, isolating the resulting salt and aminating the salt, N- [4-pyridyl] pyridinium chloride hydrochloride, with N, N-dimethyl formamide. The resultant reaction mass is hydrolysed in the presence of a base, extracted with a suitable organic solvent and distilled under vacuum to produce 4-dimethyl amino pyridine.