One-pot Synthesis of Acid Anhydrides from Acids Using N,N,N',N'-Tetramethylchloroformamidinium Chloride under Mild Conditions

Article abstract of DOI:10.1246/bcsj.56.3529

N,N,N',N'-Tetramethylchloroformamidinium chloride reacted smoothly with a variety of carboxylic and phosphoric acids in the presence of a tertiary amine to give the corresponding acid anhydrides in high yields.