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Insect antifeedant potent unsaturated 1,3-oxazine-2-amines

Thirunarayanan G., Renuka V., Sekar K.G., Lakshmanan K., Anbarasu K.

International Letters of Chemistry, Physics and Astronomy

2014

Vol. 4

66--81

Insect antifeedant activities of some halo substituted aryl 1,3-oxazine-2-amines have been measured using 4th instar larvae Achoea Janata L by castor leaf discs-Dethler’s method. The highly halo substituted oxazine amines have shown good insect antifeedant activities. The 1,3-oxazine amines have been synthesised by greener method by solvent-free cyclization of aryl enones with urea under microwave irradiation. The yields of the oxazines were more than 80 %. The synthesised oxazines were characterized by their physical constants, analytical and spectroscopic data.