Hydroxyamine hydrochloride → 2-[2-amino-5-(hydroxyimino-methyl)-6-methylsulfanyl-pyrimidin-4-ylamino]-N-(3-trifluoromethyl-phenyl)-acetamide

HRID 1160113Notes

Reaction equation

HRID 1160113 reaction equation
[NH2:1][C:2]1[N:7]=[C:6]([NH:8][CH2:9][C:10]([NH:12][C:13]2[CH:18]=[CH:17][CH:16]=[C:15]([C:19]([F:22])([F:21])[F:20])[CH:14]=2)=[O:11])[C:5]([CH:23]=O)=[C:4]([S:25][CH3:26])[N:3]=1.C(=O)(O)[O-].[K+].Cl.[NH2:33][OH:34]>CO>[NH2:1][C:2]1[N:7]=[C:6]([NH:8][CH2:9][C:10]([NH:12][C:13]2[CH:18]=[CH:17][CH:16]=[C:15]([C:19]([F:22])([F:21])[F:20])[CH:14]=2)=[O:11])[C:5]([CH:23]=[N:33][OH:34])=[C:4]([S:25][CH3:26])[N:3]=1

Participants

5

Reactant 3

HCID 443297Hydroxyamine hydrochlorideHCID 516893Potassium BicarbonateHCID 11176608HCID 11176608, compound

Product 1

HCID 724763122-[2-amino-5-(hydroxyimino-methyl)-6-methylsulfanyl-pyrimidin-4-ylamino]-N-(3-trifluoromethyl-phenyl)-acetamideYield 29%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Conditions

Temperature
60 °C

Procedure

To a round bottom flask was added 2-(2-amino-5-formyl-6-methylsulfanyl-pyrimidin-4-ylamino)-N-(3-trifluoromethyl-phenyl)-acetamide (50.0 mg, 0.13 mmol, 1.0 mmol), MeOH (2.0 mL), potassium bicarbonate (51.0 mg, 0.51 mmol, 4.0 eq.), and hydroxylamine HCl (35.6 mg, 0.51 mmol, 4.0 eq.). The reaction was heated to 60° C. for 72 hrs before quenching with H2O (10 mL) and EtOAc (50 mL). The EtOAc layer washed with brine, dried with Na2SO4, and concentrated to give crude 2-[2-amino-5-(hydroxyimino-methyl)-6-methylsulfanyl-pyrimidin-4-ylamino]-N-(3-trifluoromethyl-phenyl)-acetamide as an oil. The product was then precipitated out with 3 mL water and 0.5 mL of ACN, filtered and rinsed with 2 mL of (1:2 ACN: H2O) to give pure 2-[2-amino-5-(hydroxyimino-methyl)-6-methylsulfanyl-pyrimidin-4-ylamino]-N-(3-trifluoromethyl-phenyl)-acetamide as a solid (15.0 mg, 29%). LC/MSD (HP Series 1100 MSD): Expected MW: 400, Observed M+H, 401.1, Retention time: 1.48 min. ANALYTICAL HPLC: >80%, Retention time: 2.89 min (8 minute run). 1H-NMR (d6-DMSO): 10.98 (s, 1H), 10.50 (s, 1H), 8.40 (t, 1H), 8.15 (s, 1H), 8.09 (s, 1H), 7.77 (d, 1H), 7.58 (t, 1H), 7.40 (d, 1H), 5.90 (br s, 2H), 4.36 (d, 2H), 2.40 (s, 3H) ppm.

Workup

  1. custombefore quenching with H2O (10 mL) and EtOAc (50 mL)
  2. washThe EtOAc layer washed with brine
  3. dry with materialdried with Na2SO4
  4. concentrationconcentrated
  5. customto give crude 2-[2-amino-5-(hydroxyimino-methyl)-6-methylsulfanyl-pyrimidin-4-ylamino]-N-(3-trifluoromethyl-phenyl)-acetamide as an oil
  6. customThe product was then precipitated out with 3 mL water and 0.5 mL of ACN
  7. filtrationfiltered
  8. washrinsed with 2 mL of (1:2 ACN: H2O)

Sources & evidence

ORD record
ord-ea6afff487c34b4397d49caa226cc865
Source dataset
uspto-grants-2010_10
Patent number
US07816353B2

Reaction notes

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