A mild and efficient procedure for the preparation of acid chlorides from carboxylic acids

Article abstract of DOI:10.1016/S0040-4039(99)00967-3

Various carboxylic acids are converted into the corresponding acid chlorides by treatment with trichloroacetonitrile and triphenylphosphine in methylene chloride at room temperature. Aryl acids show higher reactivity than alkyl acids under the conditions.