Browsing by Author "Şahin M.F."

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2-(6-Benzoyl-2-oxo-1,3-benzothiazol-3-yl)acetic acid
(2010-01-22) Aydn A.; Akkurt M.; Önkol T.; Büyükgüngör O.; Şahin M.F.
In the title compound, C16H11NO4S, the nine-membered fused ring is nearly planar, with maximum deviations from the mean plane of-0.022 (1) Å for the N atom and 0.011 (1) Å for the S atom, and makes a dihedral angle of 53.56 (7)° with the phenyl ring. The crystal structure is stabilized by O-H⋯O and C-H⋯O hydrogen-bonding inter-actions.
Methyl [6-(2-chlorobenzoyl)-2-oxo-2,3-dihydro-1,3-benzoxazol-3-yl]acetate
(2007-02-01) Aydin A.; Dündar Y.; Akkurt M.; Büyükgüngör O.; Şahin M.F.
In the molecular structure of the title compound, C17H 12ClNO5, the 1,3-benzoxazole ring system makes a dihedral angle of 72.96 (7)° with the benzene ring of the 2-chlorobenzoyl group. In the crystal structure, two intra-molecular C-H⋯O hydrogen bonds influence the molecular conformation. © 2007 International Union of Crystallography All rights reserved.
Synthesis and crystal structure of 3-amino-1-(5-Chloro-2-Hydroxyphenyl) Imidazolidine-2,4-dione
(2013-01-01) Aydin A.; Önkol T.; Akkurt M.; Büyükgüngör O.; Şahin M.F.
The present study describes the synthesis, spectral data, and single crystal X-ray structural analysis of 3-amino-1-(5-chloro-2-hydroxyphenyl) imidazolidine-2,4-dione. X-Ray analysis revealed that the title compound did not have the anticipated structure, but had that of a different substance. This unexpected conformation generated the interest in studying the synthesis of this compound. The inspected compound, 3-amino-1-(5-chloro-2-hydroxyphenyl) imidazolidine-2,4-dione, is a pharmaceutical intermediate and is nonplanar. Its benzene and five-membered rings have a dihedral angle of 53.95(7)°. The conformation is stabilized by intermolecular OH. O, OH. N, and NH. O interactions and a weak CH. π interaction. © 2013 Copyright Taylor and Francis Group, LLC.