Synthesis and crystal structure of 6-p-hydroxyphenyl-5,6-dihydrobenzoimidazo1,2-cquinazoline

The title compound, C20H15N3O, was synthesized and the structure was investigated by X-ray crystallography. The compound crystallizes in the triclinic crystal class in the space group P1 with cell parameters a = 7.724(6)à , b = 9.059(6)à , c = 12.186(1)à , α = 78.588(5)°, β = 73.630(4)°, γ = 70.924(5)° Z = 2. The dihydropyrimidine ring in the quinazoline moiety is in an skew-boat conformation. The structure exhibits intermolecular hydrogen bonds of the type N-H···O and O-H···N. 2008 © The Japan Society for Analytical Chemistry

Synthesis and crystal structure of 6-furyl-5,6-dihydrobenzoimidazo-1,2-cquinazoline monohydrate

The title compound, C18H15N3O2, was synthesized and the structure was investigated by X-ray crystallography. The compound crystallizes in the monoclinic space group P21/c with cell parameters a = 6.9540(4)à , b = 11.4780(12)à , c = 18.5410(19)à , β = 96.948(5)o, Z = 4. The structure exhibits intermolecular hydrogen bonds of the type N-H·N. 2006 © The Japan Society for Analytical Chemistry. 2006 © The Japan Society for Analytical Chemistry

Synthesis and crystal structure of 6-butyl-5,6-dihydrobenzo-4,5imidazo1,2-cquinazoline

The title compound was synthesized and the structure was investigated by X-ray crystallography. The compound crystallizes in the monoclinic crystal class in the space group P21/n with cell parameters a = 7.6800(6)à , b = 17.3330(15)à , c = 12.0440(8)à , β = 105.248(5)°, Z = 4. The quinazoline ring is in envelope conformation. The structure exhibits an intermolecular hydrogen bond of the type N-H·N. 2006 © The Japan Society for Analytical Chemistry

Crystal structure of 2-amino-3-(N-O-chlorophenylcarboxamido)-3,4-dimethylthiophene

2-Amino-3-(N-O-chlorophenylcarboxamido)-3,4-dimethylthiophene has been characterized by the X-ray diffraction method. The compound crystallizes in monoclinic space group P21/c with cell parameters a = 8.4740(6)à , b = 7.5780(6)à , c = 20.5860(10)à , β = 100.27(4)o and Z = 4. The molecules appeared stacked. The crystal structure is stabilized by the intermolecular hydrogen bonds. 2003 © The Japan Society for Analytical Chemistry

Crystal structure of 6-pridyl-5,6-dihydrobenzo4,5-imidazo1,2-cquinazoline

The title compound C19H12N4 was synthesised and the structure was investigated by X-ray crystallography. It crystallizes in the monoclinic space group P21/c with cell parameters a = 8.697(9)à , b = 13.045(10)à , c = 13.271(4)à , β = 97.38(4)° and Z = 4. The final residual factor is 0.0628. 2004 © The Japan Society for Analytical Chemistry