(1-(3-chlorophenyl)-3-(trifluoromethyl)-1H-pyrazol-5-yl)methanamine hydrochloride → 1-((1-(3-chlorophenyl)-3-(trifluoromethyl)-1H-pyrazol-5-yl)methyl)-3-(4-(1,3-dihydroxypropan-2-yl)-3-fluorophenyl)urea

HRID 1842962Notes

Reaction equation

HRID 1842962 reaction equation
Cl.[Cl:2][C:3]1[CH:4]=[C:5]([N:9]2[C:13]([CH2:14][NH2:15])=[CH:12][C:11]([C:16]([F:19])([F:18])[F:17])=[N:10]2)[CH:6]=[CH:7][CH:8]=1.[OH:20][CH2:21][CH:22]([C:25]1[CH:30]=[CH:29][C:28]([NH:31][C:32](=O)[O:33]C2C=CC=CC=2)=[CH:27][C:26]=1[F:41])[CH2:23][OH:24]>CN(C=O)C.O>[Cl:2][C:3]1[CH:4]=[C:5]([N:9]2[C:13]([CH2:14][NH:15][C:32]([NH:31][C:28]3[CH:29]=[CH:30][C:25]([CH:22]([CH2:21][OH:20])[CH2:23][OH:24])=[C:26]([F:41])[CH:27]=3)=[O:33])=[CH:12][C:11]([C:16]([F:17])([F:18])[F:19])=[N:10]2)[CH:6]=[CH:7][CH:8]=1

Participants

5

Reactant 2

HCID 70816151(1-(3-chlorophenyl)-3-(trifluoromethyl)-1H-pyrazol-5-yl)methanamine hydrochlorideHCID 86672159Phenyl 4-(1,3-dihydroxypropan-2-yl)-3-fluorophenylcarbamate

Product 1

HCID 708163971-((1-(3-chlorophenyl)-3-(trifluoromethyl)-1H-pyrazol-5-yl)methyl)-3-(4-(1,3-dihydroxypropan-2-yl)-3-fluorophenyl)ureaYield 36%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

To a stirred solution of (1-(3-chlorophenyl)-3-(trifluoromethyl)-1H-pyrazol-5-yl)methanamine hydrochloride (153 mg, 0.4918 mmol, 1.0 eq) in DMF (5 mL) was added TEA (0.205 mL, 1.4754 mmol, 3.0 eq) followed by phenyl 4-(1,3-dihydroxypropan-2-yl)-3-fluorophenylcarbamate (150 mg, 0.4918 mmol, 1.0 eq) at RT and the mixture stirred for 16 h. The reaction mixture was diluted with water (10 mL) and extracted with ethyl acetate (15 mL). The organic layer was washed with water (10 mL) and brine (5 mL), dried over anhydrous Na2SO4, and evaporated under vacuum. The crude product was purified by neutral alumina column chromatography using MeOH/CHCl3 (1:19) as eluent to get 1-((1-(3-chlorophenyl)-3-(trifluoromethyl)-1H-pyrazol-5-yl)methyl)-3-(4-(1,3-dihydroxypropan-2-yl)-3-fluorophenyl)urea (85.5 mg; 36%) as off white solid; TLC system: MeOH/CHCl3 (1:9); Rf: 0.5).

Workup

  1. extractionextracted with ethyl acetate (15 mL)
  2. washThe organic layer was washed with water (10 mL) and brine (5 mL)
  3. dry with materialdried over anhydrous Na2SO4
  4. customevaporated under vacuum
  5. customThe crude product was purified by neutral alumina column chromatography

Sources & evidence

ORD record
ord-f838c0ba47ab487d9e51d939891470f2
Source dataset
uspto-grants-2015_02
Patent number
US08946204B2

Reaction notes

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