Sodium Carbonate → 1-(2-(Piperazin-1-yl)pyrimidin-5-yl)ethanone hydrochloride

HRID 522676Notes

Reaction equation

HRID 522676 reaction equation
[C:1]([C:4]1[CH:5]=[N:6][C:7]([N:10]2[CH2:15][CH2:14][N:13](C(OCCCC)=O)[CH2:12][CH2:11]2)=[N:8][CH:9]=1)(=[O:3])[CH3:2].C(OCC(F)(F)F)(=O)C.C(=O)([O-])[O-].[Na+].[Na+]>ClCCl>[N:10]1([C:7]2[N:6]=[CH:5][C:4]([C:1](=[O:3])[CH3:2])=[CH:9][N:8]=2)[CH2:15][CH2:14][NH:13][CH2:12][CH2:11]1

Participants

5

Reactant 3

HCID 10340Sodium CarbonateHCID 1362562,2,2-Trifluoroethyl AcetateHCID 131735539Butyl 4-(5-acetylpyrimidin-2-yl)piperazine-1-carboxylate

Product 1

HCID 1180224421-(2-(Piperazin-1-yl)pyrimidin-5-yl)ethanone hydrochlorideYield 86%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of -butyl 4-(5-acetylpyrimidin-2-yl)piperazine-1-carboxylate (4.5 g, 14.7 mmol) in dichloromethane (80 mL) was added trifluoroethyl acetate (20 mL), and the mixture was stirred at RT for 3 h. LCMS showed the reaction was completed. The reaction mixture was neutralized with sodium carbonate solution and extracted with dichloromethane. The organic layer was dried over sodium sulfate, filtered and concentrated to afford the title compound as a light yellow solid (2.6 g, 86%), which was directly used in the next step without further purification. MS (ES+) C10H14N4O requires: 206, found: 207 [M+H]+.

Workup

  1. extractionextracted with dichloromethane
  2. dry with materialThe organic layer was dried over sodium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-18eeb75877ba4bc0afdcd367ba7b7565
Source dataset
uspto-grants-2016_05
Patent number
US09334263B2

Reaction notes

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