Morpholine → HCID 28491368, compound

HRID 968119Notes

Reaction equation

HRID 968119 reaction equation
[Cl:1][C:2]1[C:3]([C:9]([OH:11])=[O:10])=[N:4][C:5](Cl)=[CH:6][CH:7]=1.[NH:12]1[CH2:17][CH2:16][O:15][CH2:14][CH2:13]1>CC(N(C)C)=O>[Cl:1][C:2]1[C:3]([C:9]([OH:11])=[O:10])=[N:4][C:5]([N:12]2[CH2:17][CH2:16][O:15][CH2:14][CH2:13]2)=[CH:6][CH:7]=1

Participants

4

Reactant 2

HCID 8083Morpholine2×HCID 15553Clopyralid

Product 1

HCID 28491368HCID 28491368, compoundYield 53%

Reagents, catalysts & solvents 1

HCID 31374DimethylacetamideSolvent2×

Conditions

Temperature
80 °C

Procedure

3,6 Dichloropyridine-2-carboxylic acid (0.55 g, 2.86 mmol), morpholine (1.37 g, 15.7 mmol) and N,N dimethylacetamide (1.37 mL) were combined and stirred for 24 h at 80° C. An additional volume of morpholine (1.39 g, 15.7 mmol) was added and heating continued for 40 hours more. After cooling the DMA was removed in the presence of toluene. The residue was dissolved in water and extracted with ether to remove excess morpholine. The aqueous was acidified to pH=2 and the product extracted into ether. Crystallization from water gave a white solid, 369 mg (53% yield). 1H NMR (CD3OD): δ 3.52 (t, 4H), 3.78 (t, 4H), 6.97 (d, 1H), 7.65 (d, 1H). LC-MS, M+H: 243.

Workup

  1. temperatureheating
  2. waitcontinued for 40 hours
  3. customwas removed in the presence of toluene
  4. dissolutionThe residue was dissolved in water
  5. extractionextracted with ether
  6. customto remove excess morpholine
  7. extractionthe product extracted into ether
  8. customCrystallization from water
  9. customgave a white solid, 369 mg (53% yield)

Sources & evidence

ORD record
ord-7886a83c144d4cdbaef29f0ad930334d
Source dataset
uspto-grants-2005_10
Patent number
US06956052B2

Reaction notes

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