In the title mol-ecule, C(13)H(12)ClNO, the two benzene rings are twisted from each other by a dihedral angle of 68.60 (8)°. In the crystal structure, the hy-droxy and amino H atoms are involved in inter-molecular hydrogen bonds, O-H⋯N and N-H⋯O, respectively, resulting in R(4) (4)(8) loops about inversion centers.

Reactions of arylacetic acids bearing an amino group at the para-position in the benzene ring with alkenes in the presence of a catalytic amount of transition metal polypyridyl complexes as photocatalysts under visible light illumination proceed smoothly to give the corresponding benzylated products via oxidative decarboxylation in good to high yields.

In the title compound, C9H10BrClN2S, the di-methyl-thio-urea group is twisted from the benzene ring plane by 54.38 (6)°. In the crystal, the amino groups are involved in the formation of N-H⋯S hydrogen bonds, which link the mol-ecules into chains along [010]. Weak C-H⋯Cl inter-actions further link these chains into layers parallel to the ab plane.

In the title compound, C(11)H(11)F(3)N(2)O, a urea derivative, the best plane through the pyrrole ring makes a dihedral angle of 9.69 (13)° with the benzene ring. The amino H atom is shielded, so that it is not involved in any hydrogen-bonding inter-actions.

The title compound, C(12)H(11)NO(3)S, synthesized by the reaction of benzene sulfonyl chloride with para-amino-phenol, is of inter-est as a precursor to biologically active sulfur-containing heterocyclic compounds. The structure is stabilized by N-H⋯O and O-H⋯O hydrogen bonds.

The title compound, C(14)H(15)N(3)O(2), was prepared by the reaction of 4-(dimethyl-amino)-benzaldehyde and furan-2-carbohydrazide. The dihedral angle between the benzene ring and the furan ring is 25.59 (19)°. In the crystal, mol-ecules are linked by inter-molecular N-H⋯O hydrogen bonds, forming chains along [010].

The title compound, C15H24N2O2S, was synthesized via a substitution reaction between the enanti-opure (1S,2S)-(+)-1,2-di-amino-cyclo-hexane and 2,4,6-tri-methyl-benzene-1-sulfonyl chloride. The cyclo-hexyl and phenyl substituents are oriented gauche around the sulfonamide S-N bond. In the crystal, mol-ecules are linked via N-H⋯N hydrogen bonds, forming chains propagating along [100].

The asymmetric unit of the title compound, C(21)H(22)N(2)O(4), a Tröger's base analogue derived from methyl 4-amino-phenyl-acetate, contains two crystallographically independent mol-ecules with dihedral angles of 88.44 (5) and 88.68 (6)° between the two benzene rings.

The title compound, C(15)H(16)N(4)O, was prepared by the reaction of pyridine-3-carbaldehyde with 4-dimethyl-amino-benzo-hydrazide in methanol. The dihedral angle between the pyridine and the benzene rings is 5.1 (3)°. In the crystal structure, the hydrazone mol-ecules are linked through inter-molecular N-H⋯O hydrogen bonds, forming chains along the b axis.

The title compound, C(25)H(23)N(3)O, features a benzene ring fused with a seven-membered 1,4-diazepine ring; the latter ring adopts a boat conformation with the (dimethyl-amino)methyl-bearing C atom as the prow and the fused-ring C atoms as the stern. There are two independent mol-ecules in the asymmetric unit with similar conformations.