Bioactive Heterocyclic Trithiophosphoric Esters: Synthesis and Bioactivity

Abstract

Novel, heterocyclic derivatives of trithiophosphoric acid have been achieved through phosphorylation of quaternary salts of N-heterocycles with phosphorus trichloride, the iminohalophosphines, thus obtained in situ were subjected to nucleophilic substitution with mercaptans in organic solvents in the presence of HCl acceptors, preferably triethylamine. Synthesized derivatives exhibited potential insecticidal behavior against a polyphagous insect Plutella xylostella (Diamond Backmoth).

Keywords:

• Heterocyclic organothiophosphate insecticides
• phosphorylation
• trithiophosphatic esters

We are highly thankful to the Department of Chemistry, University of Rajasthan, for recording a number of spectra and also for providing all necessary facilities. We are also thankful to the Department of Entomogloy, Durgapura Agricultural Research Centre, for carrying out insecticidal activity.