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Design, Synthesis, Characterization, and Crystallographic Behaviors of Some Biologically Important Chromene-Annulated Spiro-Oxindoles: A Drive to Introspect the Comparative Structural Information
Crystallography Reports ( IF 0.7 ) Pub Date : 2020-11-25 , DOI: 10.1134/s1063774520070147
S. Sharma , G. Brahmachari , V. K. Gupta

Abstract

The compounds, 2-amino-2',5-dioxo-5,6,7,8-tetrahydrospiro[chromene-4,3'-indoline]-3-carbonitrile (4a), 2-amino-1'-methyl-2',5-dioxo-5,6,7,8-tetrahydrospiro[chromene-4,3'-indoline]-3-carbonitrile (4b), and 2-amino-1',7,7-trimethyl-2',5-dioxo-5,6,7,8-tetrahydrospiro[chromene-4,3'-indoline]-3-carbonitrile (4c) were synthesized and characterized by elemental analyses, spectral studies (FT-IR, NMR, Mass) and single-crystal X-ray analysis. All the compounds crystallize in the monoclinic sp. gr. P21/c. In crystals of all three compounds, the molecules are linked by an elaborate system of N–H⋅⋅⋅O and N–H⋅⋅⋅N hydrogen bonds to form supramolecular structures.



中文翻译:

设计,合成,表征和某些生物学上重要的二氧化铬环螺-Oxindoles的晶体学行为:内省比较结构信息的驱动器。

摘要

化合物2-氨基-2',5-二氧代-5,6,7,8-四氢螺[色烯-4,3'-二氢吲哚] -3-腈(4a),2-氨基-1'-甲基- 2',5-二氧杂-5,6,7,8-四氢螺并[chromene-4,3'-二氢吲哚] -3-腈(4b)和2-氨基-1',7,7-三甲基-2'合成了5-5-氧代5,6,7,8-四氢螺并[chromene-4,3'-二氢吲哚] -3-腈(4c),并进行了元素分析,光谱研究(FT-IR,NMR,Mass)和单晶X射线分析。所有化合物均在单斜晶系结晶。gr。P 2 1 / c。在所有这三种化合物的晶体中,分子通过精心设计的N–H⋅⋅⋅O和N–H⋅⋅⋅N氢键系统相连,形成超分子结构。

更新日期:2020-11-25
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