Direct Synthesis of Sulfonamides and Activated Sulfonate Esters from Sulfonic Acids
作者:Stephen Caddick、Jonathan D. Wilden、Duncan B. Judd
DOI:10.1021/ja0397658
日期:2004.2.1
the direct coupling of sulfonic acid salts with amines and alcohols using the reagenttriphenylphosphine ditriflate is described. A new reusable polymer-supported reagent for these transformations under heterogeneous conditions is also described. These methods provide a fundamentally new approach to making small molecules containing the sulfonamide functional group.
Copper-Catalyzed Synthesis of Activated Sulfonate Esters from Boronic Acids, DABSO, and Pentafluorophenol
作者:Vincent Vedovato、Eric P. A. Talbot、Michael C. Willis
DOI:10.1021/acs.orglett.8b02445
日期:2018.9.7
The synthesis of pentafluorophenyl (PFP) sulfonate esters based on the Pd-catalyzed sulfination of aryl and heteroaryl boronic acids is reported. The sulfinate intermediates are converted in situ to the corresponding sulfonate estersusing a copper-catalyzed oxidative process, providing a broad range of PFP esters in good yields.
One-Pot Synthesis of Pentafluorophenyl Sulfonic Esters via Copper-Catalyzed Reaction of Aryl Diazonium Salts, DABSO, and Pentafluorophenol
作者:Muhammad Aliyu Idris、Sunwoo Lee
DOI:10.1021/acs.orglett.1c01056
日期:2021.6.18
multicomponent reaction of aryl diazonium tetrafluoroborate, DABSO (DABCO·(SO2)2), and pentafluorophenol. The reaction system provided the desired pentafluorophenyl sulfonic esters in good yields and exhibited excellent functional group tolerance. In addition, the generated PFP sulfonic esters were successfully applied in Sonogashira, Suzuki, Chan–Evans–Lam, and decarboxylative coupling reactions.