SYNTHESIS METHOD AND INTERMEDIATE FOR PROTHIOCONAZOLE AND ENANTIOMER THEREOF
申请人:Oriental (Luzhou) Agrochemicals. Co., Ltd.
公开号:EP3486236A1
公开(公告)日:2019-05-22
Disclosed are a method of synthesizing prothioconazole and optically active isomers thereof and intermediates. The method includes reacting hydrazine with glyoxylic acid to produce a hydrazono acetic acid as an intermediate, and then reacting the intermediate with thiocyanate to produce the target product prothioconazole. The present method is very specific in terms of regioselectivity, resulting in minimum byproducts and a high product yield. The present method does not require special equipment, nor anhydrous or oxygen-free manipulations. The process is simple and generates minimum wastes, suitable for industrial production.
Method of synthesizing prothioconazole and optically active isomers thereof and intermediates
申请人:ORIENTAL (LUZHOU) AGROCHEMICALS. CO., LTD.
公开号:US10316003B2
公开(公告)日:2019-06-11
Disclosed are a method of synthesizing prothioconazole and optically active isomers thereof and intermediates. The method includes reacting hydrazine with glyoxylic acid to produce a hydrazono acetic acid as an intermediate, and then reacting the intermediate with thiocyanate to produce the target product prothioconazole. The present method is very specific in terms of regioselectivity, resulting in minimum byproducts and a high product yield. The present method does not require special equipment, nor anhydrous or oxygen-free manipulations. The process is simple and generates minimum wastes, suitable for industrial production.
[EN] SYNTHESIS METHOD AND INTERMEDIATE FOR PROTHIOCONAZOLE AND ENANTIOMER THEREOF<br/>[FR] PROCÉDÉ DE SYNTHÈSE ET INTERMÉDIAIRE POUR LE PROTHIOCONAZOLE ET SON ÉNANTIOMÈRE<br/>[ZH] 一种丙硫菌唑及其光学活性体的合成方法和中间体
METHOD OF SYNTHESIZING PROTHIOCONAZOLE AND OPTICALLY ACTIVE ISOMERS THEREOF AND INTERMEDIATES
申请人:ORIENTAL (LUZHOU) AGROCHEMICALS. CO., LTD.
公开号:US20190135766A1
公开(公告)日:2019-05-09
Disclosed are a method of synthesizing prothioconazole and optically active isomers thereof and intermediates. The method includes reacting hydrazine with glyoxylic acid to produce a hydrazono acetic acid as an intermediate, and then reacting the intermediate with thiocyanate to produce the target product prothioconazole. The present method is very specific in terms of regioselectivity, resulting in minimum byproducts and a high product yield. The present method does not require special equipment, nor anhydrous or oxygen-free manipulations. The process is simple and generates minimum wastes, suitable for industrial production.