نتایج جستجو برای: 2 thioxothiazolidin 4 one
تعداد نتایج: 4515050 فیلتر نتایج به سال:
In the title compound, C(8)H(5)ClN(2)O, the quinazoline system is approximately planar with a maximum deviation from the least-squares plane of 0.034 (2) Å. In the crystal, classical N-H⋯O and weak non-classical C-H⋯N hydrogen bonds link the mol-ecules.
The mol-ecular and crystal structures of the title compound, C(16)H(14)FN(3)O(2), are stabilized by intra-molecular N-H⋯O and inter-molecular O-H⋯O hydrogen bonds. The existence of non-classical intra-molecular C-H⋯N hydrogen bonds provides a dihedral angle between the fluoro-substituted benzene and pyrimidinone rings of 7.9 (1)°.
In the title compound, C(15)H(13)BrN(2)O, the pyrimidine ring adopts a skew boat conformation. The amino H atom forms an inter-molecular hydrogen bond with the carbonyl O atom of an adjacent mol-ecule, forming an inversion dimer. Another lone pair of electrons on the same carbonyl O atom acts as acceptor for another N-H⋯O inter-molecular hydrogen bond with a neighbouring mol-ecule, forming chai...
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