Potassium Carbonate → Tert-butyl 4-((4-(4-chlorophenyl)-6-fluoropyridin-3-yl)methyl)piperazine-1-carboxylate

HRID 1520636Notes

Reaction equation

HRID 1520636 reaction equation
Br[CH2:2][C:3]1[C:4]([C:10]2[CH:15]=[CH:14][C:13]([Cl:16])=[CH:12][CH:11]=2)=[CH:5][C:6]([F:9])=[N:7][CH:8]=1.[N:17]1([C:23]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])=[O:24])[CH2:22][CH2:21][NH:20][CH2:19][CH2:18]1.C(=O)([O-])[O-].[K+].[K+]>CN(C)C=O>[Cl:16][C:13]1[CH:14]=[CH:15][C:10]([C:4]2[CH:5]=[C:6]([F:9])[N:7]=[CH:8][C:3]=2[CH2:2][N:20]2[CH2:19][CH2:18][N:17]([C:23]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])=[O:24])[CH2:22][CH2:21]2)=[CH:11][CH:12]=1

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 143452tert-Butyl piperazine-1-carboxylateHCID 672273415-(Bromomethyl)-4-(4-chlorophenyl)-2-fluoropyridine

Product 1

HCID 67227318Tert-butyl 4-((4-(4-chlorophenyl)-6-fluoropyridin-3-yl)methyl)piperazine-1-carboxylate

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A mixture of EXAMPLE 307B (1.24 g), tert-butyl piperazine-1-carboxylate (0.768 g), and potassium carbonate (0.570) in N,N-dimethylformamide (20 mL) was stirred at room temperature for 2 hours. The reaction mixture was partitioned between ethyl acetate and water. The organic layer was separated, and the aqueous layer was extracted with additional ethyl acetate three times. The combined organic layers were washed with brine, dried over MgSO4, filtered, and concentrated. The residue was purified with flash column chromatography on silica gel using 10% ethyl acetate in hexanes to give the title compound.

Workup

  1. customThe reaction mixture was partitioned between ethyl acetate and water
  2. customThe organic layer was separated
  3. extractionthe aqueous layer was extracted with additional ethyl acetate three times
  4. washThe combined organic layers were washed with brine
  5. dry with materialdried over MgSO4
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customThe residue was purified with flash column chromatography on silica gel using 10% ethyl acetate in hexanes

Sources & evidence

ORD record
ord-861c937ed8144d1d8b67912d13112606
Source dataset
uspto-grants-2015_07
Patent number
US09073855B2

Reaction notes

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