“…1 H NMR (600 MHz, DMSO-d 6 ) δ [ppm] = 11.23 (s,1H),8.77 (t,J = 6.36 Hz,1H),8.40 (d,J = 0.98 Hz,1H),7.77 (d,J = 8.02 Hz,2H),7.55 (d,J = 8.02 Hz,2H),1H),3H),6.47 (d,J = 1.96 Hz,1H),1H),1H),3.79 (s,3H). (30). 4-Fluoro-4′-(trifluoromethyl)-[biphenyl]-2-carboxylic acid (194 mg, 0.68 mmol) was dissolved in 3.5 mL of DMF.…”