Trifluoroacetic acid → 2-(4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)phenyl)ethanamine

HRID 573862Notes

Reaction equation

HRID 573862 reaction equation
[F:1][C:2]([F:32])([F:31])[O:3][C:4]1[CH:9]=[CH:8][C:7]([N:10]2[CH:14]=[N:13][C:12]([C:15]3[CH:30]=[CH:29][C:18]([CH2:19][CH2:20][NH:21]C(=O)OC(C)(C)C)=[CH:17][CH:16]=3)=[N:11]2)=[CH:6][CH:5]=1.FC(F)(F)C(O)=O>ClCCl>[F:32][C:2]([F:1])([F:31])[O:3][C:4]1[CH:5]=[CH:6][C:7]([N:10]2[CH:14]=[N:13][C:12]([C:15]3[CH:30]=[CH:29][C:18]([CH2:19][CH2:20][NH2:21])=[CH:17][CH:16]=3)=[N:11]2)=[CH:8][CH:9]=1

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acid3×HCID 90404063tert-butyl 4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)phenethylcarbamate

Product 1

HCID 904040382-(4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)phenyl)ethanamineYield 121.2%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a stirred and cooled (0° C.) solution of tert-butyl 4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)phenethylcarbamate (C50) (0.35 g, 0.77 mmol) in dichloromethane (2.6 mL) was added trifluoroacetic acid (0.060 mL, 0.78 mmol), and the solution was allowed to warm slowly to ambient temperature. After 18 hours, an additional amount of trifluoroacetic acid (0.060 mL, 0.78 mmol) was added. After 24 hours a third aliquot of trifluoroacetic acid (0.060 mL, 0.78 mmol) was added. After an additional 24 hours, the solution was concentrated to give the title compound as a tan solid (0.325 g, 88%): 1H NMR (400 MHz, DMSO-d6) δ 9.41 (s, 1H), 8.08 (dd, J=8.8, 2.6 Hz, 4H), 7.87 (s, 2H), 7.63 (d, J=8.3 Hz, 2H), 7.43 (d, J=8.3 Hz, 2H), 3.17-3.06 (m, 2H), 2.99-2.89 (m, 2H); ESIMS m/z 349 ([M+H]+).

Workup

  1. waitAfter an additional 24 hours
  2. concentrationthe solution was concentrated

Sources & evidence

ORD record
ord-c19225b5075d4f6299276cee771162de
Source dataset
uspto-grants-2015_05
Patent number
US09029560B2

Reaction notes

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