Sodium hydride → 3-(4,4-Diethoxybutyl)-[1,3]oxazocan-2-one

HRID 900653Notes

Reaction equation

HRID 900653 reaction equation
Cl[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][O:7][C:8](=[O:20])[NH:9][CH2:10][CH2:11][CH2:12][CH:13]([O:17][CH2:18][CH3:19])[O:14][CH2:15][CH3:16].[H-].[Na+]>CN(C)C=O.O.[Cl-].[Na+]>[CH2:15]([O:14][CH:13]([O:17][CH2:18][CH3:19])[CH2:12][CH2:11][CH2:10][N:9]1[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][O:7][C:8]1=[O:20])[CH3:16]

Participants

6

Reactant 2

HCID 24758Sodium hydrideHCID 85795399(4,4-Diethoxybutyl)carbamic acid 5-chloro-pentyl ester

Product 1

HCID 219786193-(4,4-Diethoxybutyl)-[1,3]oxazocan-2-oneYield 16.9%

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 5234Sodium ChlorideSolventHCID 6228DimethylformamideSolvent

Procedure

To a solution of (4,4-diethoxybutyl)carbamic acid 5-chloro-pentyl ester (11.4 g, 44 mmole) dissolved in N,N-dimethylformamide (100 mL) was added de-oiled sodium hydride (1.01 g, 42.3 mmole). The reaction mixture was stirred for 15 hours at room temperature, and then at 70° C. for 3 hours. The mixture was diluted with water, saturated aqueous sodium chloride was added, and extracted with ethyl ether. The organic phase was washed with water, dried (magnesium sulfate), and concentrated. Purification by silica gel chromatography, gave 3-(4,4-diethoxybutyl)-[1,3]oxazocan-2-one (2.03 g) as a viscous oil.

Workup

  1. waitat 70° C. for 3 hours
  2. additionwas added
  3. extractionextracted with ethyl ether
  4. washThe organic phase was washed with water
  5. dry with materialdried (magnesium sulfate)
  6. concentrationconcentrated
  7. customPurification by silica gel chromatography

Sources & evidence

ORD record
ord-04e774c000c5412fbf3601a2fa41fe29
Source dataset
uspto-grants-2008_04
Patent number
US07361648B2

Reaction notes

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