Synlett 2021; 32(17): 1730-1734
DOI: 10.1055/s-0040-1719828
letter

PEG-Supported Hypervalent Iodine Reagent for Sulfonamide Synthesis

João Macara
a   LAQV@REQUIMTE, Departamento de Química, NOVA School of Science and Technology, Universidade Nova de Lisboa, Campus de Caparica, Caparica 2829-516, Portugal
,
Diogo L. Poeira
a   LAQV@REQUIMTE, Departamento de Química, NOVA School of Science and Technology, Universidade Nova de Lisboa, Campus de Caparica, Caparica 2829-516, Portugal
,
Jaime A. S. Coelho
b   Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa 1749-016, Portugal
,
a   LAQV@REQUIMTE, Departamento de Química, NOVA School of Science and Technology, Universidade Nova de Lisboa, Campus de Caparica, Caparica 2829-516, Portugal
› Institutsangaben


Abstract

A reusable and recoverable PEG-supported hypervalent iodine reagent is reported. This hypervalent iodine reagent, immobilized in a soluble polymer support, was easily prepared in six steps from PEG-OH 2000. This reagent was successfully applied in a mild sulfonamide synthesis using a sulfinate salt and an amine in up to 95% yield. The use of the soluble polymer allowed a facile workup procedure and reaction monitoring, by simple precipitation and filtration of the reagent, with an easy recovery and subsequent re-oxidation and reuse. This approach greatly improves the sustainability of this sulfonamide synthesis method, avoiding frequent preparation of reagents and generation of waste during the purification steps.

Supporting Information



Publikationsverlauf

Eingereicht: 16. Juli 2021

Angenommen nach Revision: 06. August 2021

Artikel online veröffentlicht:
23. August 2021

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