Hydrazine hydrate (1:1) → 3-(4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)phenyl)propan-1-amine

HRID 62064

Reaction equation

HRID 62064 reaction equation
[F:1][C:2]([F:36])([F:35])[O:3][C:4]1[CH:9]=[CH:8][C:7]([N:10]2[CH:14]=[N:13][C:12]([C:15]3[CH:20]=[CH:19][C:18]([CH2:21][CH2:22][CH2:23][N:24]4C(=O)C5C(=CC=CC=5)C4=O)=[CH:17][CH:16]=3)=[N:11]2)=[CH:6][CH:5]=1.O.NN>CO.ClCCl>[F:36][C:2]([F:1])([F:35])[O:3][C:4]1[CH:5]=[CH:6][C:7]([N:10]2[CH:14]=[N:13][C:12]([C:15]3[CH:20]=[CH:19][C:18]([CH2:21][CH2:22][CH2:23][NH2:24])=[CH:17][CH:16]=3)=[N:11]2)=[CH:8][CH:9]=1

Participants

5

Reactant 2

HCID 24654Hydrazine hydrate (1:1)HCID 904048582-(3-(4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)phenyl)propyl)isoindoline-1,3-dione

Product 1

HCID 904042683-(4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)phenyl)propan-1-amineYield 88%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 6344DichloromethaneSolvent

Conditions

Temperature
70 °C

Procedure

In a 100 mL flask, 2-(3-(4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)phenyl)propyl) isoindoline-1,3-dione (2.50 g, 5.08 mmol) was diluted with methanol (25 mL). Hydrazine hydrate (0.740 mL, 15.2 mmol) was added and the reaction mixture was heated to 70° C. and stirred for 3 hours. The reaction mixture was cooled to room temperature, diluted with dichloromethane and washed with sodium hydroxide (1 N). The aqueous layer was further extracted with dichloromethane. The combined organics were dried over magnesium sulfate, filtered, and concentrated. The resulting residue was purified by flash column chromatography using 50% ethyl acetate/petroleum ether as eluent to afford the title compound as white solid (1.60 g, 88%): mp 143-147° C.; 1H NMR (400 MHz, DMSO-d6) δ 9.37 (s, 1H), 8.07 (d, J=9.2 Hz, 2H), 8.02 (d, J=8.4 Hz, 2H), 7.62 (d, J=8.4 Hz, 2H), 7.34 (d, J=7.6 Hz, 2H), 2.66 (t, J=7.6 Hz, 2H), 2.56 (t, J=6.8 Hz, 2H), 1.90 (brs, 2H), 1.72-1.62 (m, 2H); ES+ m/z 363 ([M+H]+).

Workup

  1. temperatureThe reaction mixture was cooled to room temperature
  2. washwashed with sodium hydroxide (1 N)
  3. extractionThe aqueous layer was further extracted with dichloromethane
  4. dry with materialThe combined organics were dried over magnesium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe resulting residue was purified by flash column chromatography

Sources & evidence

ORD record
ord-6cc7de04489e4077a0359117239b270c
Source dataset
uspto-grants-2016_09
Patent number
US09445594B2

Linked notes

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