2024 · ORGANIC LETTERS

Synthesis of Pentafluorosulfanylated Ynamides and Further Functionalizations

Popek, Lucas, Lefebvre, Gauthier, Debrauwer, Vincent, Roubaud, David, Blanchard, Nicolas, Meyer, Christophe, Bizet, Vincent

Journal
ORGANIC LETTERS
Année
2024
Volume
26
Numéro
48
Pages
10369-10375
Mois
NOV 26
DOI
10.1021/acs.orglett.4c03972

Abstract

Herein is described the first synthesis of SF5-ynamides, versatile building blocks featuring the pentafluorosulfanyl motif. This synthesis proceeds through a two-step sequence of radical SF5-addition onto the pi-system of a wide range of terminal ynamides and derivatives substituted with various nitrogen fragments followed by a dehydrochlorination reaction. A selection of downstream functionalization reactions, including nucleophilic additions, cycloadditions, and sulfur ylide synthesis, highlights the wide-ranging applications of this novel type of functionalized SF5-building block.

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