The structure of this product is inferred from its 1H- and 13C NMR spectra. Neat thiaozonide 2 decomposes violently at room temperature. In aprotic non-polar and in protic polar solvents it is slowly transformed into cis-sulfine 3c and cis-2,5-dione 4c, which rearranges to the trans-isomer 4t. A mechanism for the transformation reaction is proposed.
单线态
氧仅通过(4 + 2)-环加成与
2,5-二甲基噻吩(1)反应生成
噻唑酮2。从其1 H-和13 C NMR光谱推断出该产物的结构。整洁的
噻唑酮2在室温下剧烈分解。在非质子非极性和质子极性溶剂中,它缓慢转化为顺
硫3c和顺2,5-二
酮4c,重排为反式异构体4t。提出了转化反应的机理。