My reference is http://www.sciencedirect.com/science/article/pii/S1878535211... (Rajesh K. Singh, Sonia Devi, D.N. Prasad (2011). Synthesis, physicochemical and
biological evaluation of 2-amino-5-chlorobenzophenone derivatives as potent skeletal muscle relaxants. Arabian Journal of Chemistry)
But they use no paranitro chlorobenzene, but 4-amino-chlorobenzene to perform a FC acylation at 220°C-230°C and ZnCl2 as Lewis base.
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