Potassium Carbonate → (R)-2-(2,5-dichloro-pyrimidin-4-ylamino)-3-methyl-butyramide

HRID 1041733

Reaction equation

HRID 1041733 reaction equation
[NH2:1][C@H:2]([CH:6]([CH3:8])[CH3:7])[C:3]([NH2:5])=[O:4].[Cl:9][C:10]1[N:15]=[C:14](Cl)[C:13]([Cl:17])=[CH:12][N:11]=1.C([O-])([O-])=O.[K+].[K+]>CN(C=O)C.C(Cl)Cl>[Cl:9][C:10]1[N:15]=[C:14]([NH:1][C@H:2]([CH:6]([CH3:8])[CH3:7])[C:3]([NH2:5])=[O:4])[C:13]([Cl:17])=[CH:12][N:11]=1

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 2372592,4,5-TrichloropyrimidineHCID 444079(R)-2-amino-3-methylbutanamide

Product 1

HCID 86634077(R)-2-(2,5-dichloro-pyrimidin-4-ylamino)-3-methyl-butyramideYield 62.4%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 6344DichloromethaneSolvent

Procedure

A mixture of (R)-2-amino-3-methyl-butyramide (50 mg), 2,4,5-trichloropyrimidine (67 mg) and K2CO3 (116 mg) in DMF (3 mL) was stirred at room temperature for 5 hr. The reaction mixture was diluted with DCM and washed with brine three times. The organic layer was dried with sodium sulfate and concentrated. The residue was purified by silica gel chromatography to provide 60 mg of (R)-2-(2,5-dichloro-pyrimidin-4-ylamino)-3-methyl-butyramide: 1H NMR (300 MHz, CDCl3) 8.2 (s, 1H), 6.2 (bs, 1H), 5.8 (bs, 1H), 5.6 (bs, 1H), 4.6 (dd, 1H), 2.4 (m, 1H), 1.2 (d, 6H). MS (m/e) 263 (M+1).

Workup

  1. washwashed with brine three times
  2. dry with materialThe organic layer was dried with sodium sulfate
  3. concentrationconcentrated
  4. customThe residue was purified by silica gel chromatography

Sources & evidence

ORD record
ord-ca9b4177ec1d419692fd65d148724ee5
Source dataset
uspto-grants-2013_10
Patent number
US08552186B2

Linked notes

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