Correction: Acridine-based copper(I) PNP pincer complexes: catalysts for alkyne hydroboration and borylation of aryl halides

Abstract

Correction for ‘Acridine-based copper(I) PNP pincer complexes: catalysts for alkyne hydroboration and borylation of aryl halides’ by Angus Olding et al., Dalton Trans., 2024, 53, 4471–4478, https://doi.org/10.1039/D3DT04269C.

---

The authors regret that there is a minor citation error in their recently published manuscript.

The error is highlighted in the paragraph below from page 4472:

PNP ligand L1. Dicyclohexylphosphine (550 mg, 2.8 mmol, 2.5 equiv.) was added to a magnetically-stirred suspension of 4,5-bis(bromomethyl)acridine (3) (400 mg, 1.1 mmol, 1 equiv.) in MeOH (5 mL) maintained under N₂ and the ensuing mixture was heated at 70 °C. After 48 h, the reaction mixture was cooled to r.t. and NEt₃ (0.6 mL, 4.4 mmol, 4 equiv.) was added to the magnetically-stirred mixture. After 2 h, the ensuing mixture was concentrated under reduced pressure. The ensuing residue was subjected to flash column chromatography (silica gel, 0–10% acetone/CH₂Cl₂), to provide the previously unreported compound as an off-white solid (265 mg, 40% yield). Crystals suitable for X-ray crystallography were obtained by crystallisation from benzene/pentane.

The authors incorrectly stated that ligand L1 is previously unreported. The synthesis (and use) of ligand L1 has been reported previously.^1,2

The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers.

References

1. T. Schaub, B. Buschhaus, M. K. Brinks, M. Schelwies, R. Paciello, J.-P. Melder and M. Merger, WO 2012119929, 2012.
2. X. Ye, P. N. Plessow, M. K. Brinks, M. Schelwies, T. Schaub, F. Rominger, R. Paciello, M. Limbach and P. Hofmann, J. Am. Chem. Soc., 2014, 136, 5923–5929.

---