Synthesis method and intermediate for prothioconazole and enantiomer thereof

A synthesis method and intermediate for prothioconazole and enantiomer thereof. The method comprises: reacting a hydrazine with a glyoxylic acid to obtain a hydrazono-acetic acid intermediate, and reacting the intermediate with a thiocyanate to obtain a prothioconazole target product. The method is highly selective of reaction areas, generates little by-products, and has a high yield. The method does not have a high equipment requirement and does not need water-free or oxygen-free techniques. The method has simple techniques, generates little gas, liquid, or solid wastes, and is applicable for industrial production.