Water → HCID 66857710, compound

HRID 2356469Notes

Reaction equation

HRID 2356469 reaction equation
[NH2:1][C:2]1[N:7]=[N:6][C:5]([N:8]2[CH2:13][CH2:12][N:11]([C:14]([C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][C:17]=3[C:22]([F:25])([F:24])[F:23])=[O:15])[CH2:10][CH2:9]2)=[CH:4][CH:3]=1.[O:26]([CH2:33][C:34](Cl)=[O:35])[C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1.C(N(CC)CC)C.O>ClCCl>[O:26]([CH2:33][C:34]([NH:1][C:2]1[N:7]=[N:6][C:5]([N:8]2[CH2:9][CH2:10][N:11]([C:14](=[O:15])[C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][C:17]=3[C:22]([F:25])([F:24])[F:23])[CH2:12][CH2:13]2)=[CH:4][CH:3]=1)=[O:35])[C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1

Participants

6

Reactant 4

HCID 962WaterHCID 8471TriethylamineHCID 69703Phenoxyacetyl chlorideHCID 66849536[4-(6-Aminopyridazin-3-yl)piperazin-1-yl](2-trifluoromethylphenyl)methanone

Product 1

HCID 66857710HCID 66857710, compoundYield 34%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a stirred solution of [4-(6-aminopyridazin-3-yl)-piperazin-1-yl]-(2-trifluoromethyl-phenyl)methanone (105 mg, 0.300 mmol) in dichloromethane (10 mL) was added phenoxyacetyl chloride (56 mg, 0.32 mmol) followed by the addition of triethylamine (0.15 mL) at 0° C. The mixture was stirred at ambient temperature overnight. Water was added and the mixture was extracted with ethyl acetate (2×15 mL). The combined organic layer was washed sequentially with diluted HCl, sodium bicarbonate and brine solution, then dried with Na2SO4, concentrated. The residue was re-dissolved in small amount of dichloromethane and purified by column chromatography. The title compound was isolated as a white solid in 34% yield (50 mg). 1H NMR (300 MHz, CDCl3) δ 9.28, 8.38, 7.75, 7.64, 7.56, 7.35, 7.04, 4.65, 4.01, 3.68, 3.34.

Workup

  1. extractionthe mixture was extracted with ethyl acetate (2×15 mL)
  2. washThe combined organic layer was washed sequentially with diluted HCl, sodium bicarbonate and brine solution
  3. dry with materialdried with Na2SO4
  4. concentrationconcentrated
  5. dissolutionThe residue was re-dissolved in small amount of dichloromethane
  6. custompurified by column chromatography

Sources & evidence

ORD record
ord-da24409ff2ba429990622cfa0512b194
Source dataset
uspto-grants-2010_07
Patent number
US07759348B2

Reaction notes

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