In the title compound, C(8)H(9)N(5)O, the mean planes through the pyrimidine and triazine rings form a dihedral angle of 2.83 (16)°. The amino group adopts a trigonal-planar configuration and forms an intra-molecular resonance-assisted N-H⋯O=C hydrogen bond with the carbonyl group. In the crystal, mol-ecules are linked via inter-molecular N-H⋯N hydrogen bonds into chains of C(2) (2)(6)[R(2) (2)...

In the title compound, C(11)H(13)NO(2), the dihedral angle between the planes defined by the 2-hy-droxy-phenyl-amino group and the pent-3-en-2-one mean plane [maximum deviations = 0.0275 (19) and 0.054 (2) Å, respectively] is 31.01 (10)°. There are intra-molecular bifurcated N-H⋯(O,O) hydrogen bonds involving the amine NH group and the adjacent carbonyl and hy-droxy O atoms. In the crystal, mol...

2-Amino-5-acetyl-4-methyl-thiophene-3-carboxylic acid ethyl ester (1) and 5-acetyl-2-amino-4-methylthiophene-3-carbohydrazide (2) were synthesized and used as starting materials for the synthesis of new series of 1-(5-amino-4-(3,5-dimethyl-1H-pyrazole-1-carbonyl)-3-methylthiophen-2-yl) ethanone (3a), 1-(5-amino-4-(4-chloro-3,5-dimethyl-1H-pyrazole-1-carbonyl)-3-methylthiophen-2-yl) ethanone (3b...

The title compound, C(13)H(6)Cl(3)F(3)N(4)O, was synthesized by the reaction of 5-amino-1-[2,6-dichloro-4-(trifluoro-meth-yl)phen-yl]-1H-pyrazole-3-carbonitrile and 2-chloro-acetyl chloride. The five-membered pyrazole ring makes a dihedral angle of 71.5 (3)° with the benzene ring. The -CF(3) group is disordered by rotation, and the F atoms are split over two sets of sites with occupancies of 0....

In the title compound, C(17)H(20)N(2)O(2)S, the tetra-hydro-pyridine ring adopts an envelope conformation with the N atom at the flap position; the phenyl ring makes a dihedral angle of 81.06 (10)° with the thio-phene ring. The amino group links with the carbonyl O atom via intra-molecular N-H⋯O hydrogen bonding, forming a six-membered ring. In the crystal, inter-molecular N-H⋯O hydrogen bonds ...

In the title compound, C(15)H(13)NO(3), there is intra-molecular N-H⋯O hydrogen bond between the amino group and the ester carbonyl O atom and the dihedral angle between the aromatic ring and the ester group is 2.05 (15)°. In the crystal, mol-ecules are connected by N-H⋯O hydrogen bonds into chains parallel to [010]. In addition there are short C-H⋯O inter-actions and π-π stacking inter-actions...

The title compound, C(10)H(10)Cl(2)N(2)O(2), features a planar C(ar)-N(H)-N=C(Cl) unit [torsion angle = 5.5 (4)°] whose benzene substituent is coplanar with it [dihedral angle = 4.7 (4)°]; this unit is slightly twisted with respect to the carboxyl -CO(2) fragment [dihedral angle = 2.2 (52)°]. The amino group acts as a hydrogen-bond donor to the carbonyl O atom of an adjacent mol-ecule; the hydr...

IN THE TITLE COMPOUND (SYSTEMATIC NAME {[(phenyl-formamido)-carbon-yl]amino}-methane-thio-amide), C9H9N3O2S, both benzoyl and terminal thio-urea fragments adopt transoid conformations with respect to the central carbonyl O atom. The benzoyl and thio-biuret groups are almost coplanar, making a dihedral angle of 4.40 (8)°. The mol-ecular structure is stabilized by two intra-molecular N-H⋯O hydrog...

The thieno[2,3-b]pyridine ring system of the title compound, C(17)H(16)N(2)O(4)S(2), is essentially planar, the amino and carbonyl groups being nearly coplanar with the heterocyclic ring system. There are two N-H⋯O hydrogen-bonding inter-actions involving the same N-H donor set and two different acceptors, one in an intra-molecular bond helping to fix the mol-ecular geometry and the other defin...

In the title compound, C(20)H(12)F(2)N(2)O(4), the two benzene rings of the tricyclic unit are oriented at a dihedral angle of 30.6 (1)°. The 2,4-difluoro-anilino residue is oriented at a dihedral angle of 68.2 (1)° with respect to the phen-oxy ring. In the crystal, N-H⋯O hydrogen bonds between the amino group and the carbonyl O atom of the oxepinone ring link the mol-ecules into infinte chains...