Synthesis of vinyl sulfones from aromatic olefins and arylsulfonyl hydrazides via I2-TBHP catalyzed system under the N2 atmosphere is described. Owing to no use of metal, only producing N2 and water as the byproducts and directly available reactants, this reaction could validly avoid many disadvantages of the transition metal catalysts. In addition, the desired product can be collected with moderate
Fast Heating‐Assisted One‐Pot Copper‐Catalyzed Sulfonylation and Sulfochlorination of Styrenes
作者:Jorge Saavedra‐Olavarría、Patricio Hermosilla‐Ibáñez、Iriux Almodóvar、Edwin G. Pérez
DOI:10.1002/ejoc.202101526
日期:2022.8.5
AbstractHere, a strategy for the synthesis under fast‐heating conditions of vinyl sulfones and β‐chlorosulfones from styrene derivatives, tosyl chloride (TsCl) as sulfonyl and chlorine source, and CuBr‐neocuproine as the catalytic system is reported. The reaction occurs through an atom transfer radical addition (ATRA) mechanism to generate the sulfochlorinated adducts followed by E2 elimination to generate the vinyl sulfones. This methodology allows a wide range of vinyl sulfones and β‐chlorosulfones to be obtained using inexpensive reagents in one and five minutes respectively. These reactions appear as an interesting fast and easy‐to‐handle alternative to obtain these compounds.