(R)-PFI-2

1H NMR (400 MHz, CDCl3): δ = 1.74-1.53 (m, 4H). 2.55-2.49 (m, 1H), 2.87-2.75 (m, 2H), 3.00-2.98 (d, 2H), 3.223.10 (m, 5H), 4.02 (m, 2H ), 4.20-4.16 30 (t, 1H), 7.19-7.17 (d, 1H), 7.32 (s, 2H), 7.40-7.36 (m, 2H), 7.48-7.47 (m, 1H);

13C NMR (100 MHz, DMSO-d6) δC = 24.0, 26.0, 28.8, 37.7, 42.1, 42.6, 45.8, 46.2, 55.9, 110.2, 110.4, 123.1, 123.1, 123.4, 123.7, 123.8, 126.3, 126.4, 126.4, 126.5, 128.6, 128.7, 129.1, 129.4, 129.5, 134.1, 134.1, 128.7, 129.4, 139.4, 139.8, 139.9, 157.3, 159.8, 168.2;

19F NMR (376 MHz, DMSO-d6) δF = -118.71 (d, J=9.54 Hz, 1 F), -61 (s, 3 F);