A series of 6,8-dichloro-quinazoline derivatives bearing a sulfide group was synthesized and characterized via 1H NMR, 13C NMR, IR and elemental analyses. All the compounds were tested for their insecticidal activity against Plutella xylostella in vitro. The results indicate that the synthesized compounds possess good insecticidal activity. Among these compounds, Vc, Vi, Vj, Vk and Vm displayed 75 %, 85 %, 80 %, 70 % and 63 % activities, respectively. These may prove useful as insecticidal agents.

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