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Water → 2-oxo-3-tert-butoxycarbonylamino-5-acetyl-8-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepine

HRID 1979406
Notes
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Reaction equation

HRID 1979406 reaction equation
[O:1]=[C:2]1[NH:8][C:7]2[CH:9]=[C:10]([CH3:13])[CH:11]=[CH:12][C:6]=2[NH:5][CH2:4][CH:3]1[NH:14][C:15]([O:17][C:18]([CH3:21])([CH3:20])[CH3:19])=[O:16].[C:22](Cl)(=[O:24])[CH3:23].N1C=CC=CC=1.O>ClCCCl>[O:1]=[C:2]1[NH:8][C:7]2[CH:9]=[C:10]([CH3:13])[CH:11]=[CH:12][C:6]=2[N:5]([C:22](=[O:24])[CH3:23])[CH2:4][CH:3]1[NH:14][C:15]([O:17][C:18]([CH3:21])([CH3:20])[CH3:19])=[O:16]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 962WaterHCID 1049PyridineHCID 6367Acetyl chlorideHCID 212015812-oxo-3-tert-butoxycarbonylamino-8-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepine

Product 1

HCID 212016002-oxo-3-tert-butoxycarbonylamino-5-acetyl-8-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepine

Reagents, catalysts & solvents 1

HCID 11
1,2-Dichloroethane
Solvent

Procedure

2-Oxo-3-tert-butoxycarbonylamino-8-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepine (2.00 g) obtained from Referential Example 7 was suspended in 1,2-dichloroethane (40 ml), acetyl chloride (0.56 ml) and pyridine (0.64 ml) were added thereto, the mixture was refluxed for 2 hours. Water (100 ml) was added, extracted with ethyl acetate. The organic layer was washed with saturated aqueous sodium bicarbonate, dried over anhydrous sodium sulfate, the solvent was evaporated under reduced pressure, and diisopropyl ether was added to the residue for trituration, collectedly filtration, to thereby obtain 1.33 g of the titled compound.

Workup

  1. temperaturethe mixture was refluxed for 2 hours
  2. extractionextracted with ethyl acetate
  3. washThe organic layer was washed with saturated aqueous sodium bicarbonate
  4. dry with materialdried over anhydrous sodium sulfate
  5. customthe solvent was evaporated under reduced pressure, and diisopropyl ether
  6. additionwas added to the residue for trituration, collectedly filtration

Sources & evidence

ORD record
ord-c99b203c06d64710b83775dfd4be9acc
Source dataset
uspto-grants-2001_05
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US06239131B1

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes