GANG CHEN; YING TANG; MEI MENG; XUE-FAN GU
(HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2009-10-20)
Three chiral bibenzimidazoles were synthesized by condensation of o-phenylenediamine with L-(+)-glutamic acid, L-(+)-aspartic acid and L-(+)-tariaric acid under microwave irradiation, promoted by polyphosphoric acid (PPA). ...