Synthesis of Intermediate 2, 3-Dichloro-1,4-naphthoenone for Fungicide Dithianon  

作　　者：Zhang Zhenming LU Liangzhong Kong Xianbin Wang Jianrong Wang Gang Liu Kai Wang Xiaohui 

机构地区：[1]Jiangsu Changqing Agrochemical Co., Ltd. [2]Shenyang Research Institute of Chemical Industry Co., Ltd.

出　　处：《Plant Diseases and Pests》2019年第1期33-36,共4页植物病虫害研究（英文版）

摘　　要：The synthetic method of dithianon intermediate 2,3-dichloro-1,4-naphthoquinone was introduced. Starting with raw material sodium 4-amino1-naphthalene sulfonate, 2,3-dichloro-1,4-naphthoquinone was synthesized through acidification, chlorination and oxidation. After filtration and recrystallization, more than 98% of 2,3-dichloro-1,4-naphthoquinone was obtained, and the yield reached 76%(measured by sodium 4-amino-1-naphthalene sulfonate).The synthetic method of dithianon intermediate 2,3-dichloro-1,4-naphthoquinone was introduced. Starting with raw material sodium 4-amino1-naphthalene sulfonate, 2,3-dichloro-1,4-naphthoquinone was synthesized through acidification, chlorination and oxidation. After filtration and recrystallization, more than 98% of 2,3-dichloro-1,4-naphthoquinone was obtained, and the yield reached 76%(measured by sodium 4-amino-1-naphthalene sulfonate).

关 键 词：FUNGICIDE Dithianon 2 3-dichloro-1 4-naphthoquinone Synthesis 

分 类 号：S[农业科学]