10.1002/chem.201901163
The study focuses on the cross-coupling reaction (CCR) of alkenyl sulfoximines and alkenyl aminosulfoxonium salts with organozincs, facilitated by dual nickel catalysis and Lewis acid promotion. The primary chemicals utilized in this research include exocyclic, axially chiral, and acyclic alkenyl (N-methyl)sulfoximines, alkyl- and arylzincs, and Ni(dppp)Cl2 as the precatalyst. MgBr2 was employed as a promoter, and the reactions generally proceeded in ether as the solvent, although THF was also tested. The purpose of these chemicals was to investigate the CCR's effectiveness in producing stereoretentive products, which are crucial for the stereoselective synthesis of exocyclic and axially chiral alkenes. These alkenes are significant in the synthesis of medicinally important prostacyclin analogs such as iloprost, cicaprost, and inter-m-phenylene carbacyclin. The study provides insights into the stereochemical course of the CCR and its application in the synthesis of complex organic molecules with potential pharmaceutical relevance.