(E)-Ethyl 2-cyano-3-[5-nitro-2-(pyrrolidin-1-yl)phenyl]acrylate
نویسندگان
چکیده
منابع مشابه
(E)-Ethyl 2-cyano-3-[5-nitro-2-(pyrrolidin-1-yl)phenyl]acrylate
The title compound, C(16)H(17)N(3)O(4), was prepared by the reaction of 5-nitro-2-(pyrrolidin-1-yl)benzaldehyde and ethyl cyano-acetate. The mol-ecular structure adopts an E conformation with respect to the C=C double bond. The five-membered ring has a half-chair conformation, with puckering parameters Q(2)= 0.399 (2) Å and ϕ = 93.1 (3)°. In the crystal, inversion dimers , linked by pairs of C-...
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The title compound, C(12)H(10)N(2)O(6), was synthesized via a Knoevenagel condensation and crystallized from ethanol. In the crystal, strong classical inter-molecular O-H⋯O hydrogen bonds and weak C-H⋯N contacts link the mol-ecules into ribbons extending along [010]. Intra-molecular O-H⋯O and C-H⋯N contacts support the planar conformation of the mol-ecules (mean deivation 0.0270 Å).
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The C=C bond in the title compound, C(14)H(15)NO(4), is in an E configuration. With the exception of the methyl C atoms, the non-H atoms of the mol-ecule all lie approximately on a plane (r.m.s. deviation = 0.096 Å). π-π stacking is observed between parallel benzene rings of adjacent mol-ecules, the centroid-centroid distance being 3.7924 (8) Å.
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There are two independent mol-ecules in the asymmetric unit of the title compound, C(10)H(9)NO(3), in both of which, all non-H atoms except for the methyl C atom lie nearly in the same plane [maximum deviations = 0.094 (3) and 0.043 (2) Å]. In the crystal, each independent mol-ecules is linked by pairs of C-H⋯O inter-actions, generating inversion dimers with R(2) (2)(10) ring motifs.
متن کامل(E)-Ethyl 2-cyano-3-(1H-pyrrol-2-yl)acrylate
All the non-H atoms of the title compound, C(10)H(10)N(2)O(2), are nearly in the same plane with a maximum deviation of 0.093 (1) Å. In the crystal, adjacent mol-ecules are linked by pairs of inter-molecular N-H⋯O hydrogen bonds, generating inversion dimers with R(2) (2)(14) ring motifs.
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2010
ISSN: 1600-5368
DOI: 10.1107/s1600536810033374