Issue 4, 2021

Thiol-yne click reaction: an interesting way to derive thiol-provided catechols

Abstract

The hydrothiolation of activated alkynes is presented as an attractive and powerful way to functionalize thiols bearing catechols. The reaction was promoted by a heterogeneous catalyst composed of copper nanoparticles supported on TiO2 (CuNPs/TiO2) in 1,2-dichloroethane (1,2-DCE) under heating at 80 °C. The catalyst could be recovered and reused in three consecutive cycles, showing a slight decrease in its catalytic activity. Thiol derivatives bearing catechol moieties, obtained through a versatile Michael addition, were reacted with different activated alkynes, such as methyl propiolate, propiolic acid, propiolamide or 2-ethynylpyridine. The reaction was shown to be regio- and stereoselective towards anti-Markovnikov Z-vinyl sulfide in most cases studied. Finally, some catechol derivatives obtained were tested as ligands in the preparation of coordination polymer nanoparticles (CNPs), by taking the advantage of their different coordination sites with metals such as iron and cobalt.

Graphical abstract: Thiol-yne click reaction: an interesting way to derive thiol-provided catechols

Supplementary files

Article information

Article type
Paper
Submitted
14 Nov 2020
Accepted
08 Des 2020
First published
07 Jan 2021
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2021,11, 2074-2082

Thiol-yne click reaction: an interesting way to derive thiol-provided catechols

F. Nador, J. Mancebo-Aracil, D. Zanotto, D. Ruiz-Molina and G. Radivoy, RSC Adv., 2021, 11, 2074 DOI: 10.1039/D0RA09687C

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