2-Chloro-5-nitrobenzaldehyde thiosemicarbazone

Abstract

The title Schiff base compound, C8H7ClN4O2S, was prepared by the reaction of equimolar quanti­ties of 2-chloro-5-nitro­benzaldehyde with thio­semicarbazide in methanol. The mol­ecule adopts a trans configuration with respect to the azomethine group and the dihedral angle between the benzene ring and the thio­semicarbazide group is 6.8 (3)°. In the crystal, mol­ecules are linked through inter­molecular N—H⋯S hydrogen bonds, forming chains propagating in [010].

Microwave-assisted synthesis and antitumor evaluation of a new series of thiazolylcoumarin derivatives

“…2-(2-Chloro-5-nitrobenzylidene)hydrazinocarbothioamide (4h): Yield 79%, m.p. 207-208 °C (Hao, 2010[ 25 ]), (ethanol /water (2:1)), C 8 H 7 ClN 4 O 2 S. 1 H NMR (DMSO- d 6 ) δ 7.75-9.00 (m, 6H, Ar-H, CH=N, NH 2 ), 11.80 (s, 1H, NH). 13 C NMR (DMSO- d 6 ) δ 125.1, 125.8, 129.6, 133.9, 141.2, 145.1, 146.9, 179.1.…”