Photolyses of 2-thiouracil (1) in the presence of olefins afforded 2-substituted products and cyclobutane products, showing dual reaction sites of the thione and the C=C bond. Photolyses of 2-thioquinazolin-2, 4 (1H, 3H)-dione (6) in the presence of olefins gave 2-substituted products.
在烯烃存在下2-
硫脲(1)的光解反应产生了2-取代产物和
环丁烷产物,表明
硫酮和C=C键是双反应位点。在烯烃存在下2-
硫代
喹唑啉-2,4(1H,3H)-二酮(6)的光解反应生成了2-取代产物。