Hydrochloric Acid → HCID 18473924, compound

HRID 2227531Notes

Reaction equation

HRID 2227531 reaction equation
[NH2:1][C:2]1[O:3][CH:4]([CH:8]([C:10]2[C:18]3[C:13](=[CH:14][CH:15]=[CH:16][CH:17]=3)[NH:12][CH:11]=2)[CH3:9])[C:5](=[O:7])[N:6]=1.N1C=CC=CC=1.[C:25](OC(=O)C)(=[O:27])[CH3:26].Cl>O>[C:25]([NH:1][C:2]1[O:3][CH:4]([CH:8]([C:10]2[C:18]3[C:13](=[CH:14][CH:15]=[CH:16][CH:17]=3)[NH:12][CH:11]=2)[CH3:9])[C:5](=[O:7])[N:6]=1)(=[O:27])[CH3:26]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 1049PyridineHCID 7918Acetic AnhydrideHCID 13749522HCID 13749522, compound

Product 1

HCID 18473924HCID 18473924, compound

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
80 °C

Procedure

2-amino-5-[1-(indol-3-yl)ethyl]-2-oxazolin-4-one (100 mg) was dissolved into pyridine (0.5 ml). Acetic anhydride (117 μl) was added. The mixture was stirred for 2 hours at 80° C. To the reaction mixture was added water. The mixture was made acidic using 4N hydrochloric acid. The whole was extracted with ethyl acetate. The extract was washed with brine and dried over magnesium sulfate. Concentration of the solution gave a residue, which was subjected to the silica gel chromatography. The eluent with hexane-acetone (1:1) was collected and concentrated to provide the titled compound (16 mg).

Workup

  1. extractionThe whole was extracted with ethyl acetate
  2. washThe extract was washed with brine
  3. dry with materialdried over magnesium sulfate
  4. customConcentration of the solution gave a residue, which
  5. customThe eluent with hexane-acetone (1:1) was collected
  6. concentrationconcentrated

Sources & evidence

ORD record
ord-7b3c832c0b2b4ec28c812cdb06e832db
Source dataset
uspto-grants-2002_07
Patent number
US06414003B1

Reaction notes

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