Rapid, iterative syntheses of unsymmetrical di- and triarylboranes from crystalline aryldifluoroboranes

Douglas Turnbull; Marc-André Légaré

doi:10.1039/d3sc05071h

Rapid, iterative syntheses of unsymmetrical di- and triarylboranes from crystalline aryldifluoroboranes

Chem Sci. 2023 Nov 17;14(48):14256-14261. doi: 10.1039/d3sc05071h. eCollection 2023 Dec 13.

Authors

Douglas Turnbull¹, Marc-André Légaré¹

Affiliation

¹ Department of Chemistry, McGill University Otto Maass Chemistry Building, 801 Rue Sherbrooke O Montreal Quebec Canada H3A 0B8 ma.legare@mcgill.ca.

Abstract

A one-pot procedure to synthesise aryldifluoroboranes, ArBF₂, from bench-stable arylsilanes is presented. These ArBF₂ react conveniently with aryllithium reagents to form unsymmetrical ArAr'BF and BArAr'Ar'' in high yield. Examples of all three classes of borane have been characterised crystallographically, allowing for elucidation of geometric and crystal packing trends in crystalline ArBF₂.