Synthesis of carboxylic acids by hydrolysis or saponification
N,N-diarylammonium pyrosulfate efficiently catalyzes the hydrolysis of esters under organic solvent-free conditions. This reverse micelle-type method is successfully applied to the hydrolysis of various esters without the decomposition of base-sensitive moieties and without any loss of optical purity for α-heterosubstituted carboxylic acids.
Y. Koshikari, A. Sakakura, K. Ishihara, Org. Lett., 2012, 14, 3194-3197.