Trifluoroacetic acid → HCID 178463278, compound

HRID 1186287Notes

Reaction equation

[CH2:1]([N:3]([CH:11]1[CH2:16][CH2:15][CH2:14][CH:13]([C:17]2[C:25]3[C:20](=[CH:21][CH:22]=[C:23]([NH:26][C:27]([C:29]4[S:30][CH:31]=[CH:32][CH:33]=4)=[NH:28])[CH:24]=3)[NH:19][CH:18]=2)[CH2:12]1)C(=O)OC(C)(C)C)[CH3:2].C(O)(C(F)(F)F)=O.[NH4+].[OH-]>ClCCl>[CH2:1]([NH:3][CH:11]1[CH2:16][CH2:15][CH2:14][CH:13]([C:17]2[C:25]3[C:20](=[CH:21][CH:22]=[C:23]([NH:26][C:27]([C:29]4[S:30][CH:31]=[CH:32][CH:33]=4)=[NH:28])[CH:24]=3)[NH:19][CH:18]=2)[CH2:12]1)[CH3:2]

Participants

Conditions

Temperature: 0 °C

Procedure

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.

Workup

waitthe mixture left
customthe organic layer separated
customevaporated
customThe crude was purified by column chromatography (20% 2N NH3 in MeOH: 80% CH2Cl2)

Sources & evidence

ORD record: ord-8370a9d7772f4d65a0dcbb89e7d39555
Source dataset: uspto-grants-2014_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08673909B2

Reaction notes

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