Simple Sulfinate Synthesis Enables CH Trifluoromethylcyclopropanation

Abstract

Abstract A simple method to convert readily available carboxylic acids into sulfinate salts by employing an interrupted Barton decarboxylation reaction is reported. A medicinally oriented panel of ten new sulfinate reagents was created using this method, including a key trifluoromethylcyclopropanation reagent, TFCS‐Na. The reactivity of six of these salts towards CH functionalization was field‐tested using several different classes of heterocycles.