CC BY-NC-ND 4.0 · Synthesis
DOI: 10.1055/a-2464-8904
paper

A Photocatalytic C(sp)–B Bond Formation Employing SOMOphilic Alkynyl Sulfones and Nucleophilic Boryl Radicals

,
Eva Rivera-Chao
,
Luka Obradović
,

H2020 Marie Skłodowska-Curie Actions (Grant 101104383). J.C. thanks the European Union for funding from an MSCA Postdoctoral Fellowship (project 101104383-DES-B-CAT). E.M.A. thanks the EU funding from an MSCA Postdoctoral Fellowship (project 101150311-NOZONE). E.R.-C. acknowledges Xunta de Galicia for her postdoctoral fellowship (ED481B 2022-056). The authors gratefully acknowledge the computing time provided to them at the NHR Center NHR4CES at RWTH Aachen University (project number p0021519). This is funded by the Federal Ministry of Education and Research, and the state governments participating on the basis of the resolutions of the GWK for national high-performance computing at universities (www.nhr-verein.de/unsere-partner).


Abstract

Alkynylboron compounds are important scaffolds with broad applicability in organic synthesis. In contrast to polar or metal-catalyzed processes, here a radical approach is employed for the addition of nucleophilic boryl radicals to electrophilic SOMOphiles for the construction of the C(sp)–B bond. The reaction renders the corresponding alkynylated amine boranes with broad functional group compatibility. In addition, theoretical studies have been carried out by means of DFT to understand the reactivity and selectivity of the addition process.

Supporting Information



Publication History

Received: 26 September 2024

Accepted after revision: 08 November 2024

Accepted Manuscript online:
08 November 2024

Article published online:
20 January 2025

© 2025. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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