Synthesis of newN-acylantipyrylureas and the crystal structure ofN-benzoyl-N?-[4-(2,3-dimethyl-1-phenylpyrazol-5-one)]urea
摘要:
New derivatives of acylheterylureas were synthesized by reactions of acylisocyanates with 4-amino-2,3-dimethyl-1-phenylpyrazol-5-one. The structures of the compounds obtained have been established by IR and H-1 NMR spectroscopy. N-Benzoyl-N'-[4-(1-phenyl-2,3-dimethylpyrazol-5-one)lurea has been studied by X-ray structural analysis. It was found that the molecule adopts an anti-syn conformation stabilized by an intramolecular hydrogen bond. In the crystal, molecules are linked in centrosymmetric dimers via intermolecular hydrogen bonds.
Synthesis of newN-acylantipyrylureas and the crystal structure ofN-benzoyl-N?-[4-(2,3-dimethyl-1-phenylpyrazol-5-one)]urea
作者:N. R. Fedotova、I. A. Litvinov、O. N. Kataeva
DOI:10.1007/bf01433981
日期:1996.2
New derivatives of acylheterylureas were synthesized by reactions of acylisocyanates with 4-amino-2,3-dimethyl-1-phenylpyrazol-5-one. The structures of the compounds obtained have been established by IR and H-1 NMR spectroscopy. N-Benzoyl-N'-[4-(1-phenyl-2,3-dimethylpyrazol-5-one)lurea has been studied by X-ray structural analysis. It was found that the molecule adopts an anti-syn conformation stabilized by an intramolecular hydrogen bond. In the crystal, molecules are linked in centrosymmetric dimers via intermolecular hydrogen bonds.