4.7 Article

Synthesis of (Hetero)Aroyl Fluorides via a Mild Amides C-N Bond Cleavage

Journal

ADVANCED SYNTHESIS & CATALYSIS
Volume 364, Issue 14, Pages 2449-2453

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.202200275

Keywords

amides; N-benzoylsaccharin; fluorides; acyl fluorides; C-N Bond Cleavage

Funding

  1. National Research Foundation of Korea (NRF) - Korean government (MSIT) [NRF-2021R1A2C1005169]

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This study presents a new method for synthesizing acyl fluorides under environmentally friendly conditions without the need for transition-metal catalysts or additives. The methodology demonstrates good functional group tolerance towards various groups.
Amides, such as N-benzoylsaccharin, N,N-diBocbenzamide, and N-phenyl-N-tosylbenzamides reacted with Et3N.3HF to provide the corresponding acyl fluorides in good yields. The reaction was conducted under environmentally friendly conditions using i-PrOAc as the solvent. Moreover, the reaction was performed at room temperature and did not require a transition-metal catalyst or additives. The methodology showed functional group tolerance toward amines, alkoxy, halides, ketones, esters, and aldehydes.

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