Sacrificial Anode-Free Electrochemical Cross-Electrophile Coupling of 1,3-Diol Derivatives to Form Aliphatic and Aryl Cyclopropanes.

Cross-electrophile coupling reactions that forge C(sp 3 )-C(sp 3 ) bonds are strategic methods for the synthesis of molecules with high F(sp 3 ), yet very few employ electrochemical conditions as the necessary reductant. Herein, we report an electrochemical intramolecular cross-electrophile coupling reaction of 1,3-diol derivatives to access aliphatic and aryl cyclopropanes, including spirocyclic and fused bicyclic cyclopropanes. The scalable electrochemical cross-electrophile coupling (eXEC) reaction employs a nonsacrificial anode in an undivided cell.