Carry out a microscale esterification reaction between 2-hydroxybenzoic acid (salicylic acid) and ethanoic anhydride using phosphoric acid as a catalyst to produce aspirin on a microscale

Microscale pharmaceuticals, with the organic synthesis of aspirin by an esterification reaction between 2-hydroxybenzoic acid (salicylic acid) and ethanoic anhydride using phosphoric acid as a catalyst.