Hymexazol and its water phase synthesis process

The present invention discloses hymexazol crude drug and its water phase synthesis method, the raw materials used include: 99% azanol sulfate azanol hydrochloride; 99% methyl acetoactate or ethyl acetoacetate; 30% NaOH solution; 31% hydrochloric acid; 99% chloroform; azanol sulfate or azanol hydrochlorie is passed through synthesis, ring-closing, acidifying, extraction, desolvent, centrifuging, kiln drying to obtain hymexazol crude drug with effective component content 95-98%, the invented hymexazol crude drug is a high effect, low toxicity, residue less soil bactericidal mainly used for preventing and treating paddy damping-off, soil infected diseases of vegetable and other crops. The water phase synthesis method is low in cost, safe and reliable and high in yield.