“…The location and multiplicities of the F 5 -F 8 signals of quinone 6: d/ppm 23.8 (dt, F 8 , J 8,5 , J 8, 6 12 Hz, J 8,7 = 19.0 Hz), 22.4 (ddd, F 5 , J 5, 6 19 Hz, J 5,7 10 Hz, J 5,8 -12.5 Hz), 16.7 (dt, F 6 , J 6,5 , J 6,7 19 Hz, J 6,8 = 11.2 Hz), 14.6 (dt, F 7 , J 7,6 , J 7, 8 19 Hz, J 7,5 = 9.9 Hz) are close to those of 2-n-butylaminopentafluoro-1,4-naphthoquinone (11): d/ppm 25.8 (dt, F 8 , J 8,5 , J 8, 6 12 Hz, J 8,7 20 Hz), 24.2 (ddd, F 5 , J 5,6 20 Hz, J 5,7 10 Hz, J 5, 8 12 Hz), 19.8 (ddt, F 6 , J 6,5 , J 6,7 20 Hz, J 6,3 = 4.5 Hz), 15.0 (dt, F 7 , J 7,5 10 Hz, J 7,6 , J 7,8 20 Hz). 15 The obvious main difference between the 19 F NMR spectra of 6 and 11 is an absence of the F 3 -F 6 spin coupling in the case of 6.…”