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苯噻氰是一种性能优良的杀菌剂,有3种常见合成方法,包括2种2-巯基苯并噻唑法和1种氯甲基化法。一种2-巯基苯并噻唑法是用2-巯基苯并噻唑与溴氯甲烷反应生成2-氯甲基硫代苯并噻唑,2-氯甲基硫代苯并噻唑再与硫氰化钠反应得到苯噻氰;另一种2-巯基苯并噻唑法是先将溴氯甲烷与硫氰化钠反应生成硫氰酸氯甲酯,然后硫氰酸氯甲酯与2-巯基苯并噻唑反应得到苯噻氰。氯甲基化法是先用2-巯基苯并噻唑与多聚甲醛和氯化氢反应生成2-氯甲基硫代苯并噻唑,2-氯甲基硫代苯并噻唑再与硫氰化钠反应得到苯噻氰。
Benzirtyline is a good performance of fungicides, there are three common synthesis methods, including two 2-mercaptobenzothiazole law and a chloromethylation. A 2-mercaptobenzothiazole method is the reaction of 2-mercaptobenzothiazole and bromochloromethane to form 2-chloromethylthiobenzothiazole, 2-chloromethylthiobenzothiazole and sodium thiocyanate The reaction to give thiabendazole; Another 2-mercaptobenzothiazole method is the first bromine chloride and sodium thiocyanate reaction of methyl thiocyanate, and then methyl thiocyanate and 2-mercaptobenzothiazole Reaction to give thiabendazole. Chloromethylation is the first reaction of 2-mercaptobenzothiazole with paraformaldehyde and hydrogen chloride to form 2-chloromethylthiobenzothiazole, which is then reacted with sodium thiocyanate Get thiabendazole.