Rao, A. S.; Ramesh, K.; Rajanna, K.; Chakrvarthi, I. Ultrasonically Assisted Halogenation of Aromatic Compounds Using Isoquinolinium Bound Hypervalent Chromium and Tetrabutylammonium Halides in PEG-600 Solutions under Acid Free and Solvent-Free Conditions. ajc 2018, 30, 1892-1896.