申请人:American Home Products Corporation
公开号:US04663461A1
公开(公告)日:1987-05-05
A novel process for producing a 1-H-tetrazole-5-thiol of the formula: ##STR1## in which R.sup.1 is hydrogen; lower alkyl; lower alkyl substituted with a carboxylic acid, a carboxylic acid lower alkyl ester, or an hydroxy group; phenyl or phenyl substituted with a halogen, a lower alkyl group, or a lower alkoxy group; benzyl or benzyl substituted with a halogen, a lower alkyl group, or 1-3 alkoxy groups of 1-3 carbon atoms; or trichloroethyl, which process comprises: (a) reacting a sulfinyl or sulfonyl cyanide of the formula: RS(O).sub.n CN in which n is 1 or 2 and R is alkyl; phenyl or phenyl substituted with a halogen, a lower alkyl group, or a lower alkoxy group; benzyl or benzyl substituted on the phenyl ring with a halogen, a lower alkyl group, or a lower alkoxy group; or an alicyclic group, with an azide of the formula R.sup.1 N.sub.5, in which R.sup.1 is as defined above, to form a 5-sulfinyl or sulfonyl-1-H-tetrazole of the formula: ##STR2## in which n is 1 or 2, and R and R.sup.1 are as defined above, and (b) reacting said 5-sulfinyl or sulfonyl-1-H-tetrazole with an alkali metal sulfide or ammonium sulfide.
一种生产1-H-四唑-5-硫醇的新工艺,其化学式为:##STR1##其中R.sup.1为氢;低碳基;低碳基取代的羧酸、羧酸低碳基酯或羟基;苯基或取代有卤素、低碳基或低碳氧基的苯基;苄基或苄基取代苯环上有卤素、低碳基或1-3个1-3碳原子的低碳氧基;或三氯乙基。该工艺包括:(a)将化学式为RS(O).sub.n CN的亚磺酰基或磺酰基氰化物与化学式为R.sup.1 N.sub.5的叠氮化物反应,其中n为1或2,R为烷基;苯基或取代有卤素、低碳基或低碳氧基的苯基;苄基或苄基取代苯环上有卤素、低碳基或低碳氧基;或脂环基,以形成化学式为:##STR2##其中n为1或2,R和R.sup.1如上所定义,以及(b)将所述5-亚磺酰基或磺酰基-1-H-四唑与碱金属硫化物或铵硫化物反应。