Irradiation of O-1-alkyl-2-phenylethyl thiobenzoates gives styrenes and 2-alkyl-2-hydroxy-1-phenylethyl phenyl thioketones (III). The reaction proceeds via an oxetan (VIII), which is stable at –78° but rapidly rearranges to the thione (III) at ca. –20°.
辐射O -1-烷基-2-苯基乙基
硫代苯甲酸酯得到
苯乙烯和2-烷基-2-羟基-1-苯基
乙基苯基
硫代酮(III)。反应通过氧杂
环丁烷(VIII)进行,该环烷在–78°稳定,但在大约℃迅速重排为
硫酮(III)。–20°。