Synthesis and Crystal Structure of 7-Amino-2,3,4,5-tetrahydro-1,3-dimethyl-5-(2-nitrophenyl)-2,4-dioxo-1H-pyrano[2,3-d]pyrimidine-6-carbonitrile DMF Solvate

被引：0

作者：

梁静 ^{[1
]}

张梅梅 ^{[2
]}

王香善 ^{[2
]}

机构：

[1] School of Chemical Engineering, China University of Mining and Technology

[2] Department of Chemistry,Xuzhou Normal University

来源：

Chinese Journal of Structural Chemistry | 2008年 / 03期

关键词：

crystal structure; pyrano[2; 3-d] pyrimidine; synthesis;

D O I：

10.14102/j.cnki.0254-5861.2008.03.010

中图分类号：

O626 [杂环化合物];

学科分类号：

070303 ; 081704 ;

摘要：

The title compound 7-amino-2,3,4,5-tetrahydro-1,3-dimethyl-5-(2-nitrophenyl)-2,4-dioxo-1H-pyrano[2,3-d] pyrimidine-6-carbonitrile DMF solvate 1 (C19H20N6O6, Mr=428.41) was synthesized and crystallized. The crystal belongs to the monoclinic system, space group P21/c with a=11.383(2), b=13.372(2), c=13.673(2), β=97.380(4)o, Z=4, V=2063.8(6)3, Dc= 1.379 g/cm3, μ(MoKα)=0.105 mm-1, F(000)=896, the final R=0.0738 and wR=0.1647 for 2964 observed reflections (I > 2σ(I)). X-ray analysis reveals that the new pyran ring is coplanar, which is obviously different from those of other similar compounds. In addition, the unclassical hydrogen bonds of C-H···O and C-H···N are presented in the crystals except for the normal hydrogen bonds of N-H···O.

引用

页码：301 / 305

页数：5

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