Trifluoroacetic acid → HCID 178463278, compound

Participants

Reaction Conditions

Reaction Steps

tert-Butyl ethyl(3-(5-(thiophene-2-carboximidamido)-1H-indol-3-yl)cyclohexyl)carbamate (0.17 g, 0.36 mmol) was treated with 20% TFA solution (20 mL) in dichloromethane at 0° C. and the mixture left to stir for 2 hours at 0° C. The solution then was neutralized with 10% NH4OH solution, the organic layer separated and evaporated. The crude was purified by column chromatography (20% 2N NH3 in MeOH: 80% CH2Cl2) to give the final product as a yellow solid (0.50 g, 85%). 1H-NMR (DMSO-d6) δ 1.11 (t, 3H, J=6.9 Hz), 1.21-1.53 (m, 4H), 1.81-2.11 (m, 3H), 2.27-2.37 (m, 1H), 2.82-2.88 (m, 3H), 2.99-3.07 (m, 1H), 6.22 (s, 2H, NH), 6.64 (d, 1H, J=8.4 Hz), 7.01-7.03 (m, 2H), 7.10 (dd, 1H, J=3.6, 5.1 Hz), 7.28 (d, 1H, J=8.7 Hz), 7.59 (d, 1H, J=5.1 Hz), 7.71 (d, 1H, J=3.0 Hz), 10.62 (s, 1H, NH); ESI-MS (m/z, %) 367 (MH+, 50), 322 (100), ESI-HRMS calc. for C21H27N4S (MH+) 367.1950 found 367.1968.

Provenance & Evidence