A New Road for the Synthesis and Characterization of New Enamino Benzodiazepines

We report here the synthesis of a new 1,5-benzodiazepines derivatives by phase transfer catalysis. The structures of these products were investigated and confirmed by 1H, 13C NMR, mass spectroscopic and X-ray diffraction. Keywords: Benzodiazepine, N,N-dimethylformamide dimethyl acetal, phase transfer catalysis

Diethyl 1,4-bis­(4-nitro­phen­yl)-1,4-dihydro-1,2,4,5-tetra­zine-3,6-dicarboxyl­ate

The complete mol­ecule of the title compound, C20H18N6O8, is generated by a crystallographic twofold axis. The dihedral angle between the nitrobenzene rings is 43.5 (2)°. The central six-membered ring exhibits a boat conformation. In the crystal structure, weak inter­molecular C—H⋯O inter­actions are observed

Ethyl 5,5-dichloro-3-(4-chloro­phen­yl)-3a-methyl-4a-phenyl-3a,4,4a,5-tetra­hydro-3H-aziridino[2,1-d][1,2,4]triazolo[4,3-a][1,5]benzodiazepine-1-carboxyl­ate

In the title compound, C27H23Cl3N4O2, the seven-membered diazepine ring adopts a boat conformation. The triazole ring makes dihedral angles of 17.24 (8) and 82.86 (8)°, respectively, with the chloro­benzene ring and the benzene ring of the benzodiazepine unit

(E)-3-[(Dimethylamino)methylidene]-4-phenyl-1-(prop-2-ynyl)-1H-1,5-benzodiazepin-2(3H)-one

A new metal-organic framework compound, poly[[mu(7)-dihydrogen (4,5-dicyano1,2-phenylene) diphosphonato](oxonium) caesium], [Cs(C8H4N2O6P2)(H3O)](n) (I), based on Cs+ and the organic linker 4,5-dicyano-1,2-phenylene) bis(phosphonic acid, (H(4)cpp), containing two distinct coordinating functional groups, has been prepared by a simple diffusion method and its crystal structure is reported. The coordination polymeric structure is based on a CsO8N2 complex unit comprising a monodentate hydronium cation, seven O-atom donors from two phosphonium groups of the (H(2)cpp)(2-) ligand, and two N-atom donors from bridging cyano groups. The high level of connectivity from both the metal cation and the organic linker allow the formation of a compact and dense three-dimensional network without any crystallization solvent. Topologically (I) is a seven-connected uninodal network with an overall Schafli symbol of {4(17).6(4)}. Metal cations form an undulating inorganic layer, which is linked by strong and highly directional O-H center dot center dot center dot O hydrogen-bonding interactions. These metallic layers are, in turn, connected by the organic ligands along the [010] direction to form the overall three-dimensional framework structure

N-Paranitrophénylhydrazono-α-(2-méthylbenzimidazol-1-yl)glyoxylate d'éthyle

There are two independent molecules in the asymmetric unit of the title compound {systematic name: ethyl 2-(2-methyl-1H-benzimidazol-1-yl)-2-[2-(4-nitrophenyl)hydrazinylidene]ethanoate}, C18H17N5O4. Each molecule and its inversion-related partner are linked by a pair of intermolecular N—H...N hydrogen bonds, forming inversion dimers in the crystal structure

(E)-3-[(Dimethylamino)methylidene]-4-phenyl-1H-1,5-benzodiazepin-2(3H)-one

The asymmetric unit of the title compound, C18H17N3O, consists of two independent molecules, each having an E conformation with respect to the C=C bond between the benzodiazepinone and dimethylamine groups. In the crystal, the two independent molecules are linked into a dimer by a pair of N—H...O hydrogen bonds

2-Isopropyl-4-methoxy-5-methylphenyl acetate

In the title compound, C13H18O3, the benzene ring is almost perpendicular to the acetoxy plane, making a dihedral angle of 89.33 (11)°. In the crystal, molecules are linked by weak C—H...O hydrogen bonds, forming a zigzag chain along the c-axis direction