螺二邻二亚甲基噻吩(Ⅶ)和环二邻二亚甲基噻吩(Ⅷ)可通过硫转换试剂1.1-硫-双苯并眯唑和2.3-二羟甲基噻吩(Ⅳ)作用生成的2.3-二亚甲基-2.3-二氢化噻吩(Ⅶ)的聚合而成。螺环化台物和环状化合物的形成认为是以双自由基中间体机理进行的。监根据四谱性质的分析确定其结构。哈普[1]报导了若干新的硫转换试剂的合成及其反应,为硫转换试剂在有机合成上的广 Spiro di-o-dimethylthiophene (VII) and cyclo-di-methylenedioxythiophene (VIII) can be generated by the action of the sulfur-converting reagent 1.1-S-bisbenzothiazole and 2.3-dimethylolthiophene Of 2.3-dimethylene-2.3-dihydrothiophene (Ⅶ) polymerization. The formation of spiro-cyclists and cyclic compounds is believed to be based on the diradical intermediate mechanism. According to the analysis of the nature of the four spectrum to determine its structure. Hapu [1] reported the synthesis and reaction of several new sulfur conversion reagents for the widest range of organic synthesis of sulfur conversion reagents