The invention discloses a preparation method of a myrtenyl-1, 3, 4-
oxadiazole formyl
hydrazine compound as well as a product and application of the myrtenyl-1, 3, 4-
oxadiazole formyl
hydrazine compound. The preparation method comprises the following steps: oxidizing myrtenal to synthesize myrtenic acid; reacting the myrtenic acid with hydrazine
hydrate to generate myrtenyl
hydrazide; the preparation method comprises the following steps: reacting myrtenyl
hydrazide with methyl
oxalyl chloride to generate myrtenyl-1, 3, 4-
oxadiazole methyl ester; the preparation method comprises the following steps: reacting myrtenyl-1, 3, 4-oxadiazole methyl ester with each substituted
phenylhydrazine to synthesize a myrtenyl-1, 3, 4-oxadiazole formyl
hydrazine compound; the compound has a general formula I: # imgabs0 #, wherein R is H, 4-F, 4-Cl, 4-Br, 4-I, 4-CH3, 2-CH3, 2-F, 3-F, 2-Cl, 3-Cl, 2-Br, 3-Br and 4-OCH3; the compound has a good prevention effect on
sclerotinia sclerotiorum,
botryosphaeria dothidea and
fusarium graminearum under an in-vitro condition, and can be used for preventing and treating fungal diseases of agricultural or
forestry plants. The preparation method of the compound is simple and convenient, the yield is high, and the
product property is stable.