Synthesis and Structure of Tetrahydroimidazo[2,1-a]- 2,3-diphenyl-1, 4-diazo-3-cyclohexene

Chem. J. Chinese Universities ›› 1993, Vol. 14 ›› Issue (11): 1547.

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Synthesis and Structure of Tetrahydroimidazo[2,1-a]- 2,3-diphenyl-1, 4-diazo-3-cyclohexene

LIN Zhen-Guang¹, ZHUANG Hong-Hui², LU Can-Zhong²

1. Department of Chemistry, Fujian Teachers' University, Fuzhou, 350007;
2. Fujian Institute of Research on the Structure of Matter, Academia Sinica; State Key Laboratory of Structure Chemistry, Fuzhou

Received:1992-12-23 Revised:1993-08-01 Online:1993-11-24 Published:1993-11-24

Abstract

Abstract: The title compound was prepared by the condensation of benzile and diethylenetri-amine, which was characterized by IR, MS, ¹³C NMRand UV.The crystal structure was determined by X-ray diffraction analysis.C₁₈H₁₉N₃, M_r=277.39, space group P2₁/n, cell parameters: a=0.9442(2) nm, b=1.4344(4) nm, c=1.1824(3) nm, β=112.94(2)°, Z=4, D_c=1.25 g · cm^-3.The structure was solved by direct method.Refinements of full-matrix least-squares converged to a final R=0.05.The compound is a non-planar molecule, in which the parent structure has two rings, a six-member and a five-member with conformations of chair and half-chair forms respectively.The dihedral angle between two substituted phenyl planes is 73.5°.

Key words: Tetrahydroimidazo[2,1-a]-1,4-diazo-3-cyclohexene, Synthesis, Crystal structure

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LIN Zhen-Guang, ZHUANG Hong-Hui, LU Can-Zhong. Synthesis and Structure of Tetrahydroimidazo[2,1-a]- 2,3-diphenyl-1, 4-diazo-3-cyclohexene[J]. Chem. J. Chinese Universities, 1993, 14(11): 1547.

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Synthesis and Structure of Tetrahydroimidazo[2,1-a]- 2,3-diphenyl-1, 4-diazo-3-cyclohexene

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