P. Jaisankar

Facile Synthesis of 3(α,β‐Diaryl Vinyl)Indoles Under Conventional and Solvent‐Free Microwave Irradiation

Abstract An efficient route for the synthesis of 3‐diarylvinylindoles has been developed by employing phosphorylchloride as a reagent under conventional conditions and microwave irradiation using K10 montmorillonite clay as a solid support.

3-Chloro-2-methyl­quinolin-4(1H)-one

The title compound, C10H8ClNO, crystallizes in the centrosymmetric space group C2/c. The compound exists in the keto form in the crystalline state. The heterocyclic ring is not aromatic. The N atom is sp2 hybridized. The structure is stabilized by N—H⋯O intermolecular hydrogen bonds.

2-Formyl-1-phenyl­sulfonyl-1H-indole-3-carbonitrile

In the title structure, C16H10N2O3S, there are two crystallographically independent molxadecules in the asymmetric unit. In one molxadecule, the dihedral angle between the indole ring system and the phenyl ring is 68.3u2005(2)°, and in the other it is 80.3u2005(2)°. C—H⋯O, C—H⋯N and C—H⋯π interxadactions are observed in the crystal structure.

N-[(3-Methyl-1-phenyl­sulfonyl-1H-indol-2-yl)meth­yl]-1,1-dioxo-1-benzo[d]isothia­zol-3(2H)-one

In the title compound,

1-(4-Methoxy­phen­yl)-3,3-bis­(methyl­sulfan­yl)-2-phenyl­prop-2-en-1-one

C_{23}H_{18}N_2O_5S_2

3-Chloro-1-phenyl­sulfonyl-1H-indole-2-carbaldehyde

, the sulfonyl-bound phenyl ring and the thiazole group make dihedral angles of 79.2 (1) and 88.6

3‐Bromo­methyl‐1‐phenyl­sulfonyl‐1H‐indole‐2‐carbonitrile

(1)^o

3-(1,2-Diphenyl­vinyl)-2-methyl-1-phenyl­sulfonyl-1H-indole

, respectively, with the indole mean plane. The crystal packing is stabilized by weak intermolecular C—H cdot cdot cdot O hydrogen bonds and C—H cdot cdot cdot pi and pi - pi interactions.

1-Benzene­sulfonyl-2,3-dimethyl-1H-indole

In the title compound, C18H18O2S2, there are two independent and conformationally similar molxadecules in the asymmetric unit. In one of the molxadecules, the dihedral angle between the two aromatic rings is 77.1u2005(2)°, and in the other it is 78.2u2005(2)°. The two independent molxadecules are linked by a C—H⋯π interxadaction.

2-Formyl-1-phenylsulfonyl-1 H -indole-3-carbonitrile

In the title molxadecule, C15H10ClNO3S, the phenyl ring and the mean plane of the indole system make a dihedral angle of 78.3u2005(1)°. The crystal packing is mainly stabilized by weak interxadmolecular C—H⋯O interxadactions.