Synthesis and Reactivity of α-Diazo-β-keto Sulfonamides
作者:Stuart G. Collins、Anita R. Maguire、Evan R. Judge、Keith O’Shaughnessy、Simon E. Lawrence
DOI:10.1055/a-2348-5631
日期:2024.12
Copper-mediated reactions of α-diazo-β-keto sulfonamides led to a range of products, including alkynesulfonamides, enamines, and α-halosulfonamides, with no evidence for intramolecular C–H insertion in any of the reactions, in contrast to the reactivity of the comparable α-diazo-β-oxo sulfones. Use of copper(II) triflate (5 mol%) led to the isolation of a series of alkynesulfonamides (up to 12% yield)