Allylgermanes were obtained by the reaction of allyl acetates with bis(triethylgermyl)cuprate(I) reagent in high yields. It was found that the present reaction proceeded with high regioselectivity, in which a triethylgermyl group was exclusively introduced to the less substituted side of an allylic system regardless of the original location of acetoxyl group. In the case of the allyl acetates possessing two secondary centers at the both ends of the allylic system, the formal SN2 product was preferentially produced (SN2 : SN2′ = ca. 9 : 1). The desulfurizative germylation of allyl phenyl sulfides utilizing bis(triethylgermyl)cuprate(I) reagent also proceeded to give allylgermanes in good yields with the same regioselectivity.
Hydrothiolation presents an attractive way to transform allenes into allylic thioethers. Herein, we described an efficient visible-light photoredox-promoted nickel-catalyzed hydrothiolation of allenes with functionalized aromatic and aliphatic thiols. This synergistic catalytic system exhibits unprecedentedly high reactivities and regiocontrol for the construction of allylic thioethers, representing
the presence of gold nanoparticles supported on ZrO2 proceeded efficiently under mild reaction conditions to give the corresponding allyl sulfides in excellent yields. ZrO2-Supported gold nanoparticles showed excellent catalytic turnover and reusability. In addition, the C–O bonds of benzyl and propargyl phosphates underwent thioetherification to afford benzyl and propargyl sulfides. The reaction of