We report the preparation of potassium acyltrifluoroborates (KATs) from widely-available carboxylic acids. Mixed anhydrides of carboxylic acids {were|had been|have been} {prepared|ready} {using|utilizing|making use of|employing|working with|applying} isobutyl chloroformate and transformed {to the|towards the|for the} corresponding KATs {using|utilizing|making use of|employing|working with|applying} a {commercial|industrial} copper catalyst, B2(pin){2|two} and aqueous KHF2. This {method|technique|approach|strategy|system|process} {allows|enables|permits|makes it possible for} for the facile preparation of aliphatic, aromatic, and amino acid-derived KATs and is compatible {with a|having a|using a} {variety|selection|assortment|range|wide variety} of functional groups {including|such as|which includes|like} alkenes, esters, halides, nitriles, and protected amines. 1414958-33-0 structure Boc-NH-PEG4-CH2CH2NH2 site PMID:23962101
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