Reaction Steps
3-(3,6-dibromo-9H-carbazol-9-yl)-2-fluoropropan-1-amine (Naidoo et al., 2014) (40.2 mg, 0.10 mmol) was added to a solution of 4-(4-(prop-2-yn-1-yloxy)benzoyl)benzoic acid (Bandyopadhyay et al., 2011) (28.5 mg, 0.10 mmol), N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (21.2 mg, 0.11 mmol) and 1-hydroxybenzotriazole hydrate (15.0 mg, 0.11 mmol) in dimethylformamide (0.4 ml). The reaction went to completion within an hour. The mixture was diluted with EtOAc and washed several times with water and then brine. The organic layer was dried over Na2SO4, filtered and condensed to give a light brown solid in 90% yield. 1H NMR (Acetone-d6, 400 MHz) δ 8.41 (dd, J=2.0, 0.6 Hz, 2H), 8.07 (d, J=8.4 Hz, 2H), 7.82 (dd, J=10.3, 8.6 Hz, 4H), 7.71-7.56 (m, 4H), 7.16 (d, J=8.9 Hz, 2H), 5.39-5.10 (dm, 1H), 4.94 (d, J=2.4 Hz, 2H), 4.91-4.85 (m, 1H), 4.82 (d, J=5.4 Hz, 1H), 4.05-3.89 (m, 1H), 3.87-3.70 (m, 1H), 3.17 (t, J=2.4 Hz, 1H). 13C NMR (CD2Cl2, 100 MHz): 194.6, 167.3, 161.7, 141.4, 140.1, 136.9, 132.8, 130.7, 130.2, 129.7, 127.3, 124.1, 123.6, 114.9, 113.0, 111.2 (JC-F=1.9 Hz), 92.1 (JC-F=176.2 Hz), 78.2, 76.3, 56.4, 45.8 (JC-F=22.5 Hz), 42.3 (JC-F=21.2 Hz). MS (ESI), m/z: calculated 660.01. found 660.7 (M+1).
