The scope and limitations of the dehalogenation of aromatic halides 1 and 4a-p using metallic calcium in ethanol at room temperature were revealed. The cleavage of the carbon- chlorine bond on the aromatic ring bearing electron-donating group was difficult compared to the one bearing electron-withdrawing group. Moreover, we applied this method to the dechlorination of polychlorinated biphenyls (PCBs) in transformer oil. It was also found ...
[Durie, Alastair J.; Fujiwara, Tomoya; Cormanich, Rodrigo; Buehl, Michael; Slawin, Alexandra M. Z.; O'Hagan, David Chemistry - A European Journal, 2014 , vol. 20, # 21 p. 6259 - 6263]