Synthesis and formulation of some new azines and evaluation of their fungicidal efficiency

Twenty five new 3-cyanopyridine-2[1H]-thione derivatives were synthesized by different routes. Structural elucidation of the prepared compounds was carried out by their correct elemental analyses as well as spectroscopic data [IR, Ms, [1]H-NMR]. Fungicidal activity of the new compounds, on two soil borne fungi, was assayed by food poison technique where, some of the new compounds showed good fungicidal activity. Formulation of the most potent one, in the form of 20% EC, was carried out and its fungicidal activity was evaluated which was found to be more active than the standard fungicide Flutolanil [Moncut 25% WP]