Electron-transfer initiated nucleophilic substitution of thiophenolate anion by 1-chloro-substituted 4-(thiazol-2-ylazo)naphthalenes

Electrochemical, Regioselective, and Stereoselective Synthesis of Allylic Thioethers and Selenoethers under Transition-Metal-Free and Oxidant-Free Conditions

We disclose a mild, scalable, electricity-promoted cross coupling protocol between allylic iodides and disulfides/diselenides for the formation of C-S/Se bonds in the absence of transition metals, bases, and oxidants. The stereochemically different densely functionalized allylic iodides gave regio- and stereoselective diverse thioethers in good yields. This strategy demonstrates a sustainable promising approach for the synthesis of allylic thioethers in 38-80% yields. This protocol also provides a synthetic platform for the synthesis of allylic selenoethers. A single-electron transfer radical pathway was also validated with radical scavenger experiments and cyclic voltammetry data.

Electroreductive Nickel-Catalyzed Thiolation: Efficient Cross-Electrophile Coupling for C-S Formation

Sulfur-containing molecules are of utmost topical importance towards the effective development of pharmaceuticals and functional materials. Herein, we present an efficient and mild electrochemical thiolation by cross-electrophile coupling of alkyl bromides with functionalized bench-stable thiosulfonates to access alkyl sulfides with excellent efficacy and broad functional group tolerance. Cyclic voltammetry and potentiostatic analysis were performed to elucidate mechanistic insights into this electrocatalytic thiolation reaction.