A switchable and benign protocol for chemoselectivesynthesis of sulfoxides and α-alkoxy-β-ketothioethers has been developed. It was determined that various thiophenols and alkenes/alkynes are compatible to realize the target compounds from a medium to a high yield by regulating the reaction temperature. In particular, methanol not only served as a solvent but also participated in the reaction process
Solvent-Enabled Radical Selectivities: Controlled Syntheses of Sulfoxides and Sulfides
作者:Huamin Wang、Qingquan Lu、Chaohang Qian、Chao Liu、Wei Liu、Kai Chen、Aiwen Lei
DOI:10.1002/anie.201508729
日期:2016.1.18
Controllingselectivity is of central importance to radical chemistry. However, the highly reactive and unstable radical intermediates make this task especially challenging. Herein, a strategy for taming radical redox reactions has been developed, in which solvent‐bonding can alter the reactivity of the generated radical intermediates and thereby drastically alter the reaction selectivity at room temperature
Pummerer Reaction of Sulfoxides in Acetic Anhydride Catalyzed by Al-MCM-41
作者:Suguru Ito、Yoshihiro Kubota、Masatoshi Asami
DOI:10.1246/cl.150896
日期:2016.1.5
The Pummerer reaction of acetic anhydride with both alkyl aryl sulfoxides and dialkyl sulfoxides was efficiently promoted by a mesoporous aluminosilicate Al-MCM-41 to afford the corresponding α-ace...