曙红-Y(EY)介导的烯烃烷基磺酰基氰化反应显示出可提供高收率的烷基磺酰基腈。根据瞬态吸收光谱法,反应通过光致电子从3 EY *转移至原位形成的光催化剂的O氰化衍生物而进行,并生成了被EY •氧化的亚磺酸盐。变成磺酰基。将后者加到烯烃上,然后进行自由基氰基基团转移,然后将腈与维持自由基链的RSO 2自由基一起提供。
The free‐radical three‐component carbocyanation of electron‐rich olefins was investigated with p‐tosyl cyanide as cyanide source. The scope and limitations of the process were established by varying the nature of the alkene and radical precursor. Carbocyanation of chiral allylsilanes was shown to occur with high diastereocontrol, leading to syn β‐silyl nitriles. The origin of the stereocontrol was