Fig. 4: Synthetic scheme for the formation of the Ph4N+ salts 23 and 24.
From: Synthesis and characterization of tetraphenylammonium salts
Triarylammoniumyl salt 9 was prepared from 10 over 2 steps. The intermolecular radical coupling reaction between 9 and aryl radical 12, formed in situ following the thermolysis of the diacyl peroxide 13, yielded the Ar4N+ salt (15) along with various byproducts (11, 16, 17, and 18). Removal of the bromo and tert-butyl groups in 15 afforded 23, whose counter anion was exchanged to obtain 24.
