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- W2072228641 abstract "The structures of methyl 5-benzoyl-1-(2-methoxycarbonylphenyl)-2-pyrazoline-3-carboxylate (1) and methyl (±)-5-(α-hydroxybenzyl)-1-(2-methoxycarbonylphenyl)-2-pyrazoline-3-carboxylate (2a) are compared. In (1), there is an extensive conjugation involving the N-N=C chain of the pyrazoline ring and the phenyl and carboxy groups bonded at N1 and C3, respectively. In (2a), the presence of a strong hydrogen bond between the hydroxyl group and the methoxycarbonylphenyl group causes the rotation of the latter with respect to the pyrazoline ring by 47 o , with a partial loss of conjugation and with the elongation of the N1-phenyl bond" @default.
- W2072228641 created "2016-06-24" @default.
- W2072228641 creator A5034672267 @default.
- W2072228641 creator A5040815168 @default.
- W2072228641 date "1994-01-15" @default.
- W2072228641 modified "2023-09-26" @default.
- W2072228641 title "Structure of two 1,3,5-substituted 2-pyrazolines, C20H18N2O5 and C20H20N2O5" @default.
- W2072228641 doi "https://doi.org/10.1107/s0108270193007097" @default.
- W2072228641 hasPublicationYear "1994" @default.
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