In the title chiral aldimine, C(19)H(17)N, the azomethine group is not fully conjugated with the phenyl substituent: the dihedral angle between phenyl and C(*)-N=C mean planes is ϕ(3) = 23.0 (2)°. Compared with the earlier DFT-B3LYP/6-31 G(d) computations from the literature, the C=N-C(*)-C(naph-thyl) torsion angle, found at ϕ(2) = -118.0 (2)° in the X-ray structure, does not match the angle ca...

The title compound, C(25)H(26)N(2)O(4), exists in an E conformation with respect to each azomethine link. The two phenol-substituted benzene rings are twisted away from the plane of the diimine benzene ring by dihedral angles of 27.25 (5) and 56.67 (5)°. The mol-ecular structure is stabilized by intra-molecular O-H⋯N hydrogen bonds.

The complete mol-ecule of the title compound, C(21)H(26)N(2)O(6), is generated by a crystallographic twofold axis and adopts a trans configuration with respect to the azomethine group. The two benzene rings are almost perpendicular to one another, making a dihedral angle of 89.53 (3)°. In the mol-ecular structure, pairs of intra-molecular O-H⋯N hydrogen bonds generate two six-membered rings. Th...

The mol-ecule of the title compound, C(12)H(11)ClN(2)O, has E configuration at the azomethine double bond and is virtually planar with a dihedral angle of 1.25 (13)° between the benzene and isoxazole rings. C-H⋯π inter-actions stabilize the crystal structure.

The title compound, a Schiff base, C(24)H(31)NO(3), has a substituted aromatic ring at both ends of the azomethine linkage and these make a dihedral angle of 24.9 (1)°. There is an intra-molecular hydrogen bond between the hy-droxy group (donor) and the N atom of themazomethine linkage.

Schiff bases are the most widely used organic compounds in which the carbonyl group is replaced by an imine or azomethine group. These compounds are very important in medicinal and pharmaceutical fields because of their wide spectrum. Most of them show biological activities such as antimicrobial and antifungal activity. This review summarizes the synthesis and antimicrobial activities of Schiff...

In the title Schiff base compound, C(15)H(15)N(3)O(2), the azomethine double bond adopts an E configuration. The dihedral angle between the two aromatic rings is 13.4 (12)°. In the crystal, mol-ecules are arranged in wave-like layers parallel to (100) without any classical hydrogen bonding.

ABSTRACT. The synthesis of Schiff base compound derived from 2-hydroxy-3-methoxybenzaldehyde and o-phenylenediamine via solvent-assisted mechanochemical in the presence a small amount dimethylformamide as liquid-assisted solvent was reported. Co(II), Ni(II), Cu(II) Zn(II) complexes were synthesized characterized by powder x-ray diffraction, infra-red spectroscopy, differential scanning colorime...

the development of multicomponent reactions (mcrs) designed to produce elaborate biologically active compounds has become an important area of research in organic, combinatorial, and medicinal chemistry. a comparative study of the synthesis of new bis-spiro-oxindolo(pyrrolizidines/pyrrolidines) ring systems by the cycloaddition of azomethine ylides generated by a decarboxylative route from sarc...