Hydroxylamine → HCID 9819974, compound

HRID 2084936Notes

Reaction equation

HRID 2084936 reaction equation
[CH2:1]([O:5][C:6]1[CH:11]=[CH:10][C:9]([S:12]([N:15]2[CH2:20][CH2:19][O:18][CH2:17][CH:16]2[C:21]([OH:23])=O)(=[O:14])=[O:13])=[CH:8][CH:7]=1)[C:2]#[C:3][CH3:4].CN(C=O)C.C(Cl)(=O)C(Cl)=O.C(N(CC)CC)C.[NH2:42][OH:43]>ClCCl.C1COCC1>[CH2:1]([O:5][C:6]1[CH:11]=[CH:10][C:9]([S:12]([N:15]2[CH2:20][CH2:19][O:18][CH2:17][CH:16]2[C:21]([NH:42][OH:43])=[O:23])(=[O:14])=[O:13])=[CH:8][CH:7]=1)[C:2]#[C:3][CH3:4]

Participants

8

Reactant 5

HCID 787HydroxylamineHCID 6228DimethylformamideHCID 8471TriethylamineHCID 65578Oxalyl chlorideHCID 22644786HCID 22644786, compound

Product 1

HCID 9819974HCID 9819974, compoundYield 77.8%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
0 °C

Procedure

A solution of 4-([4-(2-butynyloxy)phenyl]sulfonyl}-morpholine-3-carboxylic acid (0.52 g, 1.53 mmol) and DMF (0.24 mL, 3.1 mmol) in dichloromethane (6 mL) was cooled in an ice bath and oxalyl chloride (1.54 mL of 2M in CH2Cl2; 3.1 mmol) was added dropwise. The reaction mixture was stirred at 0° C. for 10 minutes and at room temperature for 2 hours and then recooled to 0°. A THF (4.5 mL) solution of triethyl amine (0.86 mL, 6.13 mmol) and hydroxylamine (0.56 mL of 50% hydroxyamine in water, 9 mmol) was added in one portion. The reaction was stirred at room temperature overnight. After removing the solvent, the oily residue was diluted with ethyl acetate and water. The organic layer was washed with water and brine, dried over sodium sulfate, filtered and evaporated to obtain 0.42 g of 4-([4-(2-butynyloxy)phenyl]sulfonyl}-N-hydroxy-3-morpholinecarboxamide. Yield˜77.8%. mp 68-72° C. Electrospray Mass Spec 355.2(M+H)+.

Workup

  1. customrecooled to 0°
  2. stirringThe reaction was stirred at room temperature overnight
  3. customAfter removing the solvent
  4. additionthe oily residue was diluted with ethyl acetate and water
  5. washThe organic layer was washed with water and brine
  6. dry with materialdried over sodium sulfate
  7. filtrationfiltered
  8. customevaporated

Sources & evidence

ORD record
ord-bca6c99a1ba34f5eb09941c198c52281
Source dataset
uspto-grants-2004_04
Patent number
US06716833B2

Reaction notes

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