European Journal of Biomedical and Pharmaceutical Sciences

SYNTHESIS AND STUDY OF IMIDAZOLE DERIVATIVES OF ARYL SUBSTITUTED 1,3-THIAZOLE AND ITS NANOPARTICLES WITH SPECIAL REFERENCE TO PLANT PATHOGENS OF SOME VEGETABLE CROPS

*Chhaya D. Badnakhe

ABSTRACT

The synthesis, spectral analysis and biological activities of 5-(2’-hydroxy-3’,5’-dichlorophenyl)-4-heptan-1-one- 2-[4-(2-hydroxy-3,5-dichlorophenyl)-2-mercapto-imidazolo]-1,3-thiazole (8d2) (J”) have been carried out. In this case 5-(2’-hydroxy-3’,5’-dichlorophenyl)-4-(heptan-1-one)-2- amino-1,3-thiazole (8d) (J), 5-(2’-hydroxy-3’,5’-dichlorophenyl)-4-heptan-1-one-2-[(2-hydroxy-3-dichlorophenyl)ethanonylamino]-1,3-thiazole (8d1) (J’) & 5-(2’-hydroxy-3’,5’-dichlorophenyl)-4-heptan-1-one- 2-[4-(2-hydroxy-3,5-dichlorophenyl)-2-mercapto-imidazolo]-1,3-thiazole (8d2) (J”) have been screened. The compound (J) was synthesized from 1-(2’-Hydroxy-3’,5’-dichlorophenyl)-2-bromo-1,3-nonanedione (a4) by the action of thiourea, while (J”) was synthesized from (J) by reaction with α-bromo,2-hydroxy-3,5 dichloroacetophenone to get 5-(2’-hydroxy-3’,5’-dichlorophenyl)-4-heptan-1-one-2-[(2-hydroxy-3,5-dichlorophenyl)ethanonylamino]-1,3-thiazole (8d1) (J’). Further (J’) on treatment with KSCN was dissolved in acetic acid gave (J’’). The nanoparticles of the compounds J, J’and J’’ have been prepared by using ultrasonic technique. The titled compound and its nanoparticles were assayed for antipathogenic impact against some common crop pathogens viz - Aspergillus niger, Pseudomonas lachrymans, Fusarium oxysporum and Fusarium solani.

Keywords: Chalcone, thiazine, thiourea, ?-bromo,2-hydroxy-3,5 dichloroacetophenone, KSCN was dissolved in acetic, antipathogenic activities.