Ammonium Chloride → 2-[[2-(3-Benzyloxy-phenyl)-ethyl]-(tetrahydrofuran-3-ylmethyl)amino]-N,N-dimethyl-acetamide hydrochloride

HRID 1092392Notes

Reaction equation

HRID 1092392 reaction equation
[BH4-].[Na+].[CH2:3]([O:10][C:11]1[CH:12]=[C:13]([CH2:17][CH2:18][NH:19][CH2:20][C:21]([N:23]([CH3:25])[CH3:24])=[O:22])[CH:14]=[CH:15][CH:16]=1)[C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1.[O:26]1[CH2:30][CH2:29][CH:28]([CH:31]=O)[CH2:27]1.[Cl-:33].[NH4+]>ClCCCl>[ClH:33].[CH2:3]([O:10][C:11]1[CH:12]=[C:13]([CH2:17][CH2:18][N:19]([CH2:31][CH:28]2[CH2:29][CH2:30][O:26][CH2:27]2)[CH2:20][C:21]([N:23]([CH3:24])[CH3:25])=[O:22])[CH:14]=[CH:15][CH:16]=1)[C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1

Participants

6

Reactant 4

HCID 25517Ammonium ChlorideHCID 1575683-Furancarboxaldehyde, tetrahydro-HCID 4311764Sodium borohydrideHCID 595968562-[2-(3-benzyloxy-phenyl)-ethylamino]-N,N-dimethyl-acetamide

Product 1

HCID 665912062-[[2-(3-Benzyloxy-phenyl)-ethyl]-(tetrahydrofuran-3-ylmethyl)amino]-N,N-dimethyl-acetamide hydrochlorideYield 80%

Reagents, catalysts & solvents 1

HCID 111,2-DichloroethaneSolvent

Procedure

1.06 g (22 mmol) of NaBH4 were added portionwise to a mixture 2.9 g (9.3 mmol) of 2-[2-(3-benzyloxy-phenyl)-ethylamino]-N,N-dimethyl-acetamide, 1.28 ml (14.1 mmol) of tetrahydrofuran-3-carbaldehyde and 4 g of 4 Å molecular sieves in 130 ml of 1,2-dichloroethane. The reaction mixture was stirred at room temperature overnight. Aqueous ammonium chloride was added, the solvent was removed under vacuum, the residue was extracted with ethyl acetate and the organic phase was washed with an aqueous saturated solution of K2CO3. The solvent was removed under reduced pressure and the product was dissolved in anhydrous hydrochloric acid in ethyl acetate. The solvent was removed and the product was triturated with diethyl ether. 3.2 g (80% yield) of the title compound were isolated as a yellow solid.

Workup

  1. customthe solvent was removed under vacuum
  2. extractionthe residue was extracted with ethyl acetate
  3. washthe organic phase was washed with an aqueous saturated solution of K2CO3
  4. customThe solvent was removed under reduced pressure
  5. dissolutionthe product was dissolved in anhydrous hydrochloric acid in ethyl acetate
  6. customThe solvent was removed
  7. customthe product was triturated with diethyl ether

Sources & evidence

ORD record
ord-41b6386e6f774f1eacec7e39be1935d8
Source dataset
uspto-grants-2012_03
Patent number
US08129427B2

Reaction notes

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