Ammonium Acetate → HCID 10149203, compound

HRID 1063322Notes

Reaction equation

HRID 1063322 reaction equation
C([O-])(=O)C.[NH4+].[CH2:6]([N:13]1[CH2:18][CH2:17][C:16](=O)[C:15]([CH2:22][CH3:23])([CH2:20][CH3:21])[CH2:14]1)[C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1.C([BH3-])#[N:25].[Na+]>CO>[NH2:25][CH:16]1[CH2:17][CH2:18][N:13]([CH2:6][C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=2)[CH2:14][C:15]1([CH2:22][CH3:23])[CH2:20][CH3:21]

Participants

5

Reactant 3

HCID 517165Ammonium AcetateHCID 5003444Sodium cyanoborohydrideHCID 22278925HCID 22278925, compound

Product 1

HCID 10149203HCID 10149203, compound

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Conditions

Temperature
0 °C

Procedure

Ammonium acetate (7.85 g, 102 mmol) was added to the stirred solution of 1-benzyl-3,3-diethyl piperidin-4-one (5.0 g, 20.40 mmol) in methanol (100 ml) and stirring was continued for 3 hr at ambient temperature. The resulting mixture was cooled at 0° C. and sodium cyanoborohydride (1.3 g, 20.40 mmol) was added to it. Cooling was removed after 10 min. and resulting mixture was stirred for 6 hr at ambient temperature. The reaction mixture was concentrated to dryness, triturated with water, acidified with conc. HCl (pH 3˜4) and extracted with ethyl acetate to remove impurities. The aqueous layer was basified with 1 M sodium hydroxide solution (pH˜10) and extracted with ethyl acetate. Ethyl acetate extract was dried (Na2SO4) and concentrated to dryness to furnish 4-amino-1-benzyl-3,3-diethyl piperidine. Yield 8.2 (82%), C16H26N2, m/z 247 (M+1), PMR (CDCl3): 0.84 (s, 3H), 0.98 (s, 3H), 1.48 (bs, 2H, D2O exchangeable), 1.66 (m, 2H), 2.04 (m, 2H), 2.42 (m, 2H), 2.86 (m, 1H), 3.46 (dd, 2H), 7.32 (m, 5H).

Workup

  1. temperatureCooling
  2. customwas removed after 10 min.
  3. customresulting mixture
  4. stirringwas stirred for 6 hr at ambient temperature
  5. concentrationThe reaction mixture was concentrated to dryness
  6. customtriturated with water
  7. extractionextracted with ethyl acetate
  8. customto remove impurities
  9. extractionextracted with ethyl acetate
  10. extractionEthyl acetate extract
  11. dry with materialwas dried (Na2SO4)
  12. concentrationconcentrated to dryness

Sources & evidence

ORD record
ord-2dea8ecd2dbf426d902010cae8e67c2d
Source dataset
uspto-grants-2005_11
Patent number
US06964966B2

Reaction notes

Loading…