申请人:——
公开号:US04143049A1
公开(公告)日:1979-03-06
A method for preparing 2H-tetrazolium chloride hydrochlorides having the general formula ##STR1## where R.sub.1 and R.sub.2 are H, OH, NO.sub.2, Cl, or OCH.sub.2 COOH, and n is from 0 to 3, and also di-2H-tetrazolium chloride hydrochloride having the formula ##STR2## wherein the corresponding formazans are oxidized with chlorine in a medium of a polar organic solvent at a temperature from -5.degree. to +20.degree. C.
一种制备具有一般式##STR1##的2H-四唑盐盐酸盐的方法,其中R.sub.1和R.sub.2为H、OH、NO.sub.2、Cl或OCH.sub.2 COOH,n为0至3,以及具有式##STR2##的二2H-四唑盐盐酸盐,其中相应的福尔马赞在极性有机溶剂的介质中用氯氧化,在-5℃至+20℃的温度下进行。