[EN] NEW PROCESS FOR THE SYNTHESIS OF 1-(2-((2,4-DIMETHYLPHENYL)THIO)PHENYL)PIPERAZINE [FR] NOUVEAU PROCÉDÉ POUR LA SYNTHÈSE DE 1-(2-((2,4-DIMÉTHYLPHÉNYL)THIO)PHÉNYL)PIPÉRAZINE
[EN] NEW PROCESS FOR THE SYNTHESIS OF 1-(2-((2,4-DIMETHYLPHENYL)THIO)PHENYL)PIPERAZINE [FR] NOUVEAU PROCÉDÉ POUR LA SYNTHÈSE DE 1-(2-((2,4-DIMÉTHYLPHÉNYL)THIO)PHÉNYL)PIPÉRAZINE
A mild, scalable iodine-mediated oxidative cross-coupling reaction of arylhydrazines and thiols for construction of thioethers (sulfides) in the absence of any transition metals or photocatalysts is disclosed. A variety of unsymmetrical diaryl sulfides with broad substrate scope both on thiols and hydrazines were synthesized in high yields in water at room temperature. Furthermore, to demonstrate the
Safe, Scalable, Inexpensive, and Mild Nickel‐Catalyzed Migita‐Like C−S Cross‐Couplings in Recyclable Water
作者:Tzu‐Yu Yu、Haobo Pang、Yilin Cao、Fabrice Gallou、Bruce H. Lipshutz
DOI:10.1002/anie.202013017
日期:2021.2.15
A new approach to C−Scouplings is reported that relies on nickel catalysis undermildconditions, enabled by micellar catalysis in recyclable water as the reaction medium. The protocol tolerates a wide range of heteroaromatic halides and thiols, including alkyl and heteroaryl thiols, leading to a variety of thioethers in good isolated yields. The method is scalable, results in low residual metal in