The Conventional Synthesis and Study of Substituted 1,3-Thiazine and Its Nanoparticles on Phytotic Growth of Some Vegetable Crops

The synthesis, spectral analysis and biological activities of 4-phenyl-2-hydroxy-chlorosubstituted-2-imino-1,3 thiazines have been carried out. In this case 4-(2'-hydroxy-3',5'-dichlorophenyl)-6-(4"-nitrophenyl)-2-iminophenyl-6H-3N-phenyl-1,3-thiazine (C) has been screened. The compound C was synthesized from 2'-hydroxy-3,5-dichlorophenyl-4-(4”-nitrophenyl) chalcone (a) by the action of diphenylthiourea. The compound (a) was synthesized from 2’-hydroxy-3’,5’-dichloroacetophenone by the action of p-nitrobenzaldehyde in ethanol and 40% NaOH. The nanoparticles of the compound C has been prepared by using ultrasonic technique. The titled compound and their nanoparticles were screened for their growth promoting activity on some vegetable crop plants viz. Momordica charantia-L-Bitter guard (Karela), Lagneria siceraria-snake guard (Lavki), Luffa cylindrica L-sponge guard (Gilke) and Benincasa hispida-Pumpkin (Kohle).