Water → 2-oxo-3-tert-butoxycarbonylamino-5-(furan-2-ylcarbonyl)-8-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepine

HRID 1979415Notes

Reaction equation

HRID 1979415 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].[O:22]1[CH:26]=[CH:25][CH:24]=[C:23]1[C:27](Cl)=[O:28].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:27]([C:23]2[O:22][CH:26]=[CH:25][CH:24]=2)=[O:28])[CH2:4][CH:3]1[NH:14][C:15]([O:17][C:18]([CH3:21])([CH3:20])[CH3:19])=[O:16]

Participants

6

Reactant 4

HCID 962WaterHCID 1049PyridineHCID 682422-Furancarbonyl chlorideHCID 212015812-oxo-3-tert-butoxycarbonylamino-8-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepine

Product 1

HCID 212018672-oxo-3-tert-butoxycarbonylamino-5-(furan-2-ylcarbonyl)-8-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepineYield 81.3%

Reagents, catalysts & solvents 1

HCID 111,2-DichloroethaneSolvent

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), 2-furancarbonyl chloride (1.05 g) and pyridine (626 mg) were added thereto, the mixture was refluxed for 2 hours. Water (100 ml) was added to the reaction mixture, 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, collected by filtration, to thereby obtain 2.15 g of the titled compound (Yield: 77,4%).

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
  7. filtrationcollected by filtration

Sources & evidence

ORD record
ord-c562e42d7d3749dba0d177e62d45f0fe
Source dataset
uspto-grants-2001_05
Patent number
US06239131B1

Reaction notes

Loading…