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A research program leading to the discovery of an agricultural fungicide, ferimzone (common name proposed to 8b), was initiated when an interesting fungicidal activity was observed in pyrimidinylhydrazone la in our random fungicidal screening. Ferimzone, (Z)-2'-methylacetophenone 4, 6-dimethyl-2-pyrimidinylhydrazone (8b), is a new fungicide with curative activity, which is effective against rice blast, leaf brown spot, stem-rot, and sheath blight by foliar treatment. The synthesis of a host of analogs and their fungicidal properties are described. * Studies on Fungicidal Pyrimidinylhydrazones

Insecticidally active sulfur derivatives (VI) of dihydronereistoxin (VIa) were synthesized in one step sequence starting from 2-dimethylamino-l,3-dichloropropane (III) or 1-dimethylamino-2,3-dichloropropane (IV) by utilizing intramolecular SN 2 reaction.

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