Iodine-Mediated Copper-Catalyzed Efficient<i>α</i>-C(<i>sp</i><sup>2</sup>)-Thiomethylation of<i>α</i>-Oxoketene Dithioacetals with Dimethyl Sulfoxide in One Pot
The direct α-Csp2H functionalization and thiomethylation of α-oxoketene dithioacetals (DTAs) has been accomplished with dimethylsulfoxide (DMSO) in the presence of iodine and a copper(I) salt for the first time. A prerequisite is the in situ iodination of the α-Csp2 atom of dithioacetals that could offer other reaction channels. The operationally simple one-pot protocol includes region-defined consecutive