申请人:Sumitomo Chemical Company, Limited
公开号:US05969149A1
公开(公告)日:1999-10-19
There is disclosed a process for producing hexahydrothieno[3,4-d]imidazole-2,4-diones of the formula (1): wherein R is the same or different and represents a lower alkyl group, an alkenyl group, an aryl group or an aralkyl group all of which may be substituted, which is characterized by the step of reacting hexahydrofuro[3,4-d]imidazole-2,4-diones of the formula (2): ##STR1## wherein R has the same meaning as described above with hydrogen sulfide in the presence of a basic compound and sulfur.
揭示了一种生产式(1)的六氢噻吩[3,4-d]咪唑-2,4-二酮的方法:其中R是相同或不同,并表示可以被取代的较低烷基、烯基、芳基或芳基烷基,其特征在于将式(2)的六氢呋喃[3,4-d]咪唑-2,4-二酮与硫化氢在碱性化合物和硫的存在下反应。