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

HRID 1979433Notes

Reaction equation

HRID 1979433 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].[S: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](=[O:28])[C:23]2[S:22][CH:26]=[CH:25][CH:24]=2)[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 789282-Thiophenecarbonyl chlorideHCID 212015812-oxo-3-tert-butoxycarbonylamino-8-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepine

Product 1

HCID 212015632-oxo-3-tert-butoxycarbonylamino-5-(2-thenoyl)-8-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepineYield 47.2%

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 (2.0 g) obtained from Referential Example 7 was suspended in 1,2-dichloroethane (20 ml), 2-thiophencarbonyl chloride (1.11 g) and pyridine (0.60 g) were added to the suspension, and the mixture was refluxed for 3 hours. The reaction mixture was allowed to cool, water was added to the mixture, extracted with chloroform. The organic layer was washed with water and saturated brine, dried over anhydrous magnesium sulfate, the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography(n-hexane:ethyl acetate=2:1), to thereby obtain 1.30 g of the title compound as a light yellow crystal.

Workup

  1. temperaturethe mixture was refluxed for 3 hours
  2. temperatureto cool
  3. extractionextracted with chloroform
  4. washThe organic layer was washed with water and saturated brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. customthe solvent was evaporated under reduced pressure
  7. customThe residue was purified by silica gel column chromatography(n-hexane:ethyl acetate=2:1)

Sources & evidence

ORD record
ord-332415e14aca446288fcaf3598a207a2
Source dataset
uspto-grants-2001_05
Patent number
US06239131B1

Reaction notes

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