Ethyl 3-cyano-7-methylpyrazolo[1,5-a]pyrimidine-6-carboxylate
✍ Scribed by Wen, Li-Rong ;Wang, Shu-Wen ;Li, Ming ;Guo, Wei-Si
- Publisher
- International Union of Crystallography
- Year
- 2005
- Tongue
- English
- Weight
- 180 KB
- Volume
- 61
- Category
- Article
- ISSN
- 1600-5368
No coin nor oath required. For personal study only.
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The title compound, C 18 H 18 N 2 O 5 , was synthesized from 2,3dimethoxyphenylmethylidenemalononitrile and ethyl acetoacetate in the presence of triethylbenzylammonium chloride in an aqueous medium. The pyridone and benzene rings make a dihedral angle of 63.8 (1) . There are intermolecular C-HÁ Á Á
The title compound, C~27~H~27~N~3~O~2~S, was obtained __via__ a multicomponent reaction using benzaldehyde, ethyl acetoacetate, ammonium acetate and phenyl isothiocyanate. The pyrimidine ring assumes a half-boat conformation. The crystal packing is stabilized by N—H...O and N—H...S hydrogen bonds. T