Morpholine → Methyl 6-morpholin-4-yl-6-oxohexanoate

HRID 16719

Reaction equation

HRID 16719 reaction equation
[C:1]([O:10][CH3:11])(=[O:9])[CH2:2][CH2:3][CH2:4][CH2:5][C:6]([O-:8])=O.[NH:12]1[CH2:17][CH2:16][O:15][CH2:14][CH2:13]1.Cl.C(N=C=NCCCN(C)C)C.C(N(CC)CC)C>C(Cl)(Cl)Cl>[N:12]1([C:6](=[O:8])[CH2:5][CH2:4][CH2:3][CH2:2][C:1]([O:10][CH3:11])=[O:9])[CH2:17][CH2:16][O:15][CH2:14][CH2:13]1

Participants

6

Reactant 4

HCID 8083MorpholineHCID 8471TriethylamineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 6994472Methyl adipate

Product 1

HCID 23088646Methyl 6-morpholin-4-yl-6-oxohexanoateYield 100.4%

Reagents, catalysts & solvents 1

HCID 6212ChloroformSolvent

Procedure

Monomethyl adipate (3.20 g) is dissolved in chloroform (70 ml), and thereto are added morpholine (2.61 g), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (5.75 g) and triethylamine (3.04 g) under ice-cooling. The mixture is then stirred at room temperature for 19 hours. Ice-water is added to the reaction solution and the mixture is extracted with chloroform. The organic layer is washed with 10% hydrochloric acid, saturated aqueous sodium hydrogen carbonate solution and saturated brine successively and dried over sodium sulfate. The solvent is removed by evaporation under reduced pressure to give methyl 6-morpholin-4-yl-6-oxohexanoate (4.63 g).

Workup

  1. temperaturecooling
  2. extractionthe mixture is extracted with chloroform
  3. washThe organic layer is washed with 10% hydrochloric acid, saturated aqueous sodium hydrogen carbonate solution and saturated brine successively
  4. dry with materialdried over sodium sulfate
  5. customThe solvent is removed by evaporation under reduced pressure

Sources & evidence

ORD record
ord-d6a36167b4724149bcf3c1378124ecc7
Source dataset
uspto-grants-2010_06
Patent number
US07737161B2

Linked notes

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