S.  Bhattacharjee, Raju, A., Gaykar, R. N., Gonnade, R. G., Roy, T., and Biju, A. T., ?Rapid synthesis of zwitterionic phosphonium benzoates by a three-component coupling involving phosphines, arynes and CO2?, Chemistry-An Asian Journal, vol. 15, no. 14, pp. 2203-2207, 2020.