Search

In the title mol-ecule, C19H21FN6O4, the dihedral angles between the benzene ring and essentially planar pyrimidine rings [maximum deviations of 0.036 (2) and 0.056 (2) Å] are 73.32 (7) and 63.81 (8)°. The dihedral angle between the mean planes of the pyrimidine rings is 61.43 (6)°. In the crystal, N-H⋯O hydrogen bonds link mol-ecules, forming a two-dimensional network parallel to (001) and in combination with weak C-H⋯O hydrogen bonds, a three-dimensional network is formed. Weak C-H⋯π inter-actions and π-π inter-actions, with a centroid-centroid distance of 3.599 (2) Å are also observed.

In the title compound, C17H18N4O4, the dihedral angle between the benzene ring and 2,4-di-hydro-pyrano[2,3-c]pyrazole ring system is 89.41 (7)°. The pyran moiety adopts a strongly flattened boat conformation. In the crystal, mol-ecules are linked by N-H⋯N, N-H⋯O, C-H⋯N and C-H⋯O hydrogen bonds into an infinite two-dimensional network parallel to (110). There are π-π inter-actions between the pyrazole rings in neighbouring layers [centroid-centroid distance = 3.621 (1) Å].

In the asymmetric unit of the title compound, C16H14N4O3·C2H6OS, there are two independent main mol-ecules (A and B) and two dimethyl sulfoxide solvent mol-ecules. In mol-ecule A, the pyran ring is in a flattened sofa conformation, with the sp (3)-hydridized C atom forming the flap. In mol-ecule B, the pyran ring is in a flattened boat conformation, with the sp (3)-hydridized C atom and the O atom deviating by 0.073 (3) and 0.055 (3) Å, respectively, from the plane of the other four atoms. The mean planes the pyrazole and phenyl rings form dihedral angles of 84.4 (2) and 84.9 (2)°, respectively, for mol-ecules A and B. In the crystal, N-H⋯O and N-H⋯N hydrogen bonds link the components of the structure into chains along [010]. In both solvent mol-ecules, the S atoms are disordered over two sites, with occupancy ratios of 0.679 (4):0.321 (4) and 0.546 (6):0.454 (6).

In the title compound, C22H21N3O2, the pyrimidine ring is essentially planar [maximum deviation = 0.018 (2) Å] and forms dihedral angles of 22.70 (8) and 0.97 (7)°, respectively, with the fused benzene ring and the hy-droxy-substituted benzene ring. The piperidine ring has a chair conformation and the pyran ring has a flattened twist-boat conformation. The hy-droxy group was refined as disordered over two sets of sites in a 0.702 (4):0.298 (4) ratio. The disorder corresponds to a rotation of approxomiately 180° about the C-C bond connecting the phenol group to the pyrimidine ring and hence, both the major and minor components of disorder form intra-molecular O-H⋯N hydrogen bonds. In the crystal, pairs of weak C-H⋯π inter-actions form inversion dimers. In addition, π-π inter-actions are observed between the pyrimidine ring and the hy-droxy-substituted benzene ring [centroid-centroid separation = 3.739 (2) Å].

In the title compound, C32H26Cl2F2N2O2, the tetra-hydro-pyridine ring adopts a distorted boat conformation. The chlorophenyl rings are inclined to one another by 55.2 (1)°, while for the fluorophenyl rings the dihedral angle is 80.7 (1)°. The amino group and carbonyl O atom are involved in an intra-molecular N-H⋯O hydrogen bond. In the crystal, weak C-H⋯O, C-H⋯F and C-H⋯Cl inter-actions link the mol-ecules into a three-dimensional network.

In the title mol-ecule, C31H24F4N2O2, the tetra-hydro-pyridine ring adopts a distorted boat conformation. An intra-molecular N-H⋯O hydrogen bond is formed by the amino group and ccarboxyl C=O atom. The crystal structure features weak C-H⋯F and C-H⋯O inter-actions.

In the title mol-ecule, C34H32Cl2N2O2, the tetra-hydro-pyridine ring adopts a distorted boat conformation and both 4-chloro-phenyl substituents are in axial positions. An intra-molecular N-H⋯O hydrogen bond is formed by the amino group and carbonyl O atom. In the crystal, weak C-H⋯Cl inter-actions link the mol-ecules into chains along [010].

In the title compound, C(32)H(28)F(2)N(2)O(2), the tetra-hydro-pyridine ring adopts a distorted boat conformation. The two fluoro-phenyl groups are attached to the tetra-hydro-pyridine ring in a trans orientation. The dihedral angle between the planes of the fluoro-substituted rings is 57.0 (1)°. The amino group and carbonyl O atom are involved in intra-molecular hydrogen bonding. In the crystal, weak C-H⋯O, C-H⋯F and C-H⋯π inter-actions link the mol-ecules into columns along [010].

In the title mol-ecule, C(19)H(20)N(2)O(2), the cyclo-hexene ring adopts a sofa conformation, while the pyran ring adopts a flattened boat conformation. In the crystal, mol-ecules are linked by N-H⋯N and N-H⋯O hydrogen bonds, forming a two-dimensional network parallel to (010).