Phase transfer catalysts (PTCs) have been widely used for the synthesis of organic compounds particularly in both liquid-liquid and solid-liquid heterogeneous reaction mixtures. They are known to accelerate reaction rates by facilitating formation of interphase
[Salaheldin, Abdellatif M.; Oliveira-Campos, Ana M. F.; Parpot, Pier; Rodrigues, Ligia M.; Oliveira, M. Manuel; Feixoto, Francisco P. Helvetica Chimica Acta, 2010 , vol. 93, # 2 p. 242 - 248]