منابع مشابه
4-[(3-Oxo-1,3-dihydro-2-benzofuran-1-yl)amino]benzoic acid
In the title compound, C(15)H(11)NO(4), the dihedral angle formed by the benzene ring and the essentially planar 2-benzofuran ring system is 55.93 (3)°. In the crystal, inter-molecular O-H⋯O hydrogen bonds link pairs of mol-ecules, generating centrosymmetric R(2) (2)(8) ring motifs. These dimeric units are connected via N-H⋯O hydrogen bonds, forming C(6) chains along [100].
متن کاملOn the Tautomerism of N-Substituted Pyrazolones: 1,2-Dihydro-3H-pyrazol-3-ones versus 1H-Pyrazol-3-ols.
The tautomerism of 1-phenyl-1,2-dihydro-3H-pyrazol-3-One was investigated. An X-ray crystal structure analysis exhibits dimers of 1-phenyl-1H-pyrazol-3-ol units. Comparison of NMR (nuclear magnetic resonance) spectra in liquid state (¹H, 13C, 15N) with those of "fixed" derivatives, as well as with the corresponding solid state NMR spectra reveal this compound to exist predominantly as 1H-pyrazo...
متن کاملBis(2,2-dimethyl-2,3-dihydro-1-benzofuran-7-yl) carbonate
The title compound, C(21)H(22)O(5), crystallizes with three mol-ecules in the asymmetric unit. In one mol-ecule, two methyl groups are disordered over two positions with a site occupation factor of 0.72 (2) for the major occupancy site. The benzene rings make dihedral angles of 35.3 (6), 29.7 (6) and 40.6 (7)° in the three molecules.
متن کامل(E)-5-(2-Nitroprop-1-enyl)-2,3-dihydro-1-benzofuran
The asymmetric unit of the title compound, C(11)H(11)NO(3), contains two crystallographically independent mol-ecules. The aromatic rings are oriented at a dihedral angle of 56.17 (5)°. The furan rings adopt envelope conformations. Intra-molecular C-H⋯N inter-actions results in the formation of two six-membered rings with twisted conformations. In the crystal structure, three weak C-H⋯π inter-ac...
متن کامل2,2-Dimethyl-2,3-dihydro-1-benzofuran-7-yl N-ethylcarbamate
The title compound, C(13)H(17)NO(3), crystallizes with two independent mol-ecules in the asymmetric unit. In the crystal, N-H⋯O hydrogen bonds link the mol-ecules, forming chains propagaiting in [100]. A weak C-H⋯O inter-action also occurs.
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ژورنال
عنوان ژورنال: Journal of Chemical Sciences
سال: 2011
ISSN: 0974-3626,0973-7103
DOI: 10.1007/s12039-011-0098-z