Azomethines Lab Report
SYNTHESIS,CHARACTERIZATION AND BIOLOGICAL ACTIVITES OF 2-FORMYLTHYMOL AZOMETHINES LEENA N.PATIL Department of Engineering Sciences and Humanites, Sandip Institute of Engineering and management, Sandip Foundation , Trimbak road, Mahiravani,Nashik-422213 E mail:- leena.patil@siem.org.in ABSTRACT: Thymol is a naturally occurring phenolic monoterpenoids which possesses ecological role and broad spectrum of biological activities. Hence thymol was ortho formylated to 2-formyl thymol and further derivatised to it’s azomethines derivatives. It is characterized by IR Spectroscopy, NMR Spectroscopy and Mass Spectroscopy. Microbial activity for A. niger species was investigated . The antifungal activity was found to increase with derivatization. KEY WORDS:- Monoterpenoids, Thymol,Azomethines INTRODUCTION:- The conventional synthetic pesticides have rapid knock down effect but lack target specificity so their application has minimized the threat from pest manifestations However, later many other disadvantages of synthetic pesticides came into limelight [1-4] including high persistence which results in continuing long term and wide spread pollution of environment. Many currently available pesticides have …show more content…
As the number of aromatic rings were increased, the activity of azomethine derivatives also increased. Introduction of methylene with phenyl group showed enhanced in activity. Addition of o-hydroxy phenyl group to o-thymolaldehyde also increased the activity. The antifungal activity was observed to decrease with decrease in number of methylene moiety in N-(hydroxy alkyl) azomethine derivatives of o-thymolaldehyde. 2,2’-{hexylene-1,6-di-[(imino)methyl]}-bis-[6-isopropyl-3- methylphenol] azomethine derivative of o-thymolaldehyde (3g) showed comparable antifungal activity with carbendazim (standard) (26.66 ± 1.53) against A.
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