Reaction Steps
1.02 ml (1.02 mmol, 3.00 eq.) of a 1 M solution of BBr3 in CH2Cl2 was added to a solution of 192.9 mg (0.34 mmol) 3-(2′,2″-Diisobutyl-4-methoxy-3-naphthalen-1-ylmethyl-[1,1′:4′, 1″]-terphenyl-4″-yl)propionitrile (76) in 20 ml dry CH2Cl2 at 0° C. via syringe. After that the solution was stirred for 3 h at 0° C. and then for 12 h at r.t. The reaction mixture was then added to water and extracted with CH2Cl2. The comb. org. fractions were dried over MgSO4 and evaporated. Column chromatography (hexanes/EtOAc (2+1)) yielded 117.9 mg (0.21 mmol, 62.85%) 3-(4-Hydroxy-2′,2″-diisobutyl-3-naphthalen-1-ylmethyl-[1,1′:4′, 1″]terphenyl-4″-yl)propionitrile (32) as a colorless oil. Rf (hexanes/EtOAc (2+1))=0.37. 1H-NMR (500 MHz, CDCl3): δ=0.59 (d, 6H, J=6.62 Hz, 2*CH3), 0.70 (d, 6H, J=6.78 Hz, 2*CH3), 1.50 (m, 1H, CH), 1.65 (m, 1H, CH), 2.32 (d, 2H, J=7.25 Hz, CH2), 2.47 (d, 2H, J=7.25 Hz, CH2), 2.62 (t, 2H, J=7.41 Hz, CH2CH2CN), 2.94 (t, 2H, J=7.41 Hz, CH2CH2CN), 4.47 (s, 2H, CH2Naphthyl), 4.80 (s, 1H, OH), 6.86 (d, 1H, J=8.36 Hz), 6.98-7.16 (m, 9H), 7.38 (m, 1H), 7.43-7.48 (m, 2H), 7.73 (dm, 1H, J=8.73 Hz), 7.83 (m, 1H), 8.06 (m, 1H). MS (EI): m/z=552 (30), 551 (65), 446 (21), 419 (21), 178 (19), 155 (15), 149 (24), 142 (18), 141 (100), 128 (28), 97 (23), 85 (26), 83 (25), 71 (39), 69 (30), 57 (74), 55 (35). HR-MS (EI): Calcd. for C40H41NO: 551.318814. Found: 551.318768.
