Trifluoroacetic acid → HCID 59694145, compound

Participants

Reaction Steps

To a solution of (1H-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-[3-(1-trityl-1H-imidazol-2-yl)-propyl]-amine (101 mg, 0.161 mmol) in CH2Cl2 (1.6 mL) was added triethylsilane (0.38 mL, 2.4 mmol) followed by TFA (1.9 mL, 25 mmol), and the solution was stirred at room temperature for 21 h then concentrated in vacuo. The residue was dissolved in CH2Cl2 (15 mL) and washed with 1 N NaOH(aq) (10 mL). The aqueous phase was extracted with CH2Cl2 (2×10 mL), and the combined organic phases were dried (MgSO4) and concentrated in vacuo. Purification of the crude material by column chromatography on silica gel (150:5:1 CH2Cl2/MeOH/NH4OH) afforded COMPOUND 13 as a colourless foam (47 mg, 69%). 1H NMR (CDCl3) δ 1.62-1.93 (m, 4H), 2.02 (m, 1H), 2.16 (m, 1H), 2.58-2.88 (m, 6H), 3.91 (d, 1H, J=16 Hz), 3.98 (d, 1H, J=16 Hz), 4.02 (m, 1H), 6.86 (s, 2H), 7.18 (m, 3H), 7.43 (d, 1H, J=7.2 Hz), 7.55 (m, 2H), 8.55 (d, 1H, J=3.6 Hz); 13C NMR (CDCl3) δ 21.52, 23.71, 25.96, 26.67, 29.43, 49.21, 51.07, 62.23, 115.28, 120.75, 122.41, 122.81, 135.47, 138.23, 138.86, 146.68, 148.71, 155.28, 157.49. ES-MS m/z 387 (M+H). Anal. Calcd. for C23H26N6.0.21H2O.0.36CH2Cl2: C, 66.67; H, 6.50; N, 19.97. Found: C, 66.77; H, 6.65; N, 19.69.

Provenance & Evidence