Sodium hydride → HCID 21201753, compound

HRID 1979359Notes

Reaction equation

HRID 1979359 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[N:5]([C:14](=[O:19])[C:15]([CH3:18])([CH3:17])[CH3:16])[CH2:4][CH:3]1[NH:20][C:21]([O:23][C:24]([CH3:27])([CH3:26])[CH3:25])=[O:22].[H-].[Na+].Br[CH2:31][C:32]([C:34]1[CH:38]=[CH:37][S:36][CH:35]=1)=[O:33]>O1CCCC1>[S:36]1[CH:37]=[CH:38][C:34]([C:32]([CH2:31][N:8]2[C:7]3[CH:9]=[C:10]([CH3:13])[CH:11]=[CH:12][C:6]=3[N:5]([C:14](=[O:19])[C:15]([CH3:18])([CH3:16])[CH3:17])[CH2:4][CH:3]([NH:20][C:21]([O:23][C:24]([CH3:27])([CH3:26])[CH3:25])=[O:22])[C:2]2=[O:1])=[O:33])=[CH:35]1

Participants

5

Reactant 3

HCID 24758Sodium hydrideHCID 27763792-Bromo-1-(thiophen-3-yl)ethan-1-oneHCID 212015442-oxo-3-tert-butoxycarbonylamino-5-pivaloyl-8-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepine

Product 1

HCID 21201753HCID 21201753, compoundYield 71%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

2-Oxo-3-tert-butoxycarbonylamino-5-pivaloyl-8-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepine (1.0 g) obtained from Step 1 of Example 89 was dissolved in tetrahydrofuran (10 ml), 60% sodium hydride (0.16 g) was added under argon atmosphere, the mixture was stirred for 30 minutes at room temperature. A solution of 3-bromoacetylthiophene (0.90 g) in tetrahydrofuran (5 ml) was added,stirred for one hour. The reaction mixture was poured into ice-water, extracted with ethyl acetate, the organic layer was successively washed with water and saturated brine, and dried over anhydrous sodium 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 0.94 g of the titled compound (Yield: 71%).

Workup

  1. extractionextracted with ethyl acetate
  2. washthe organic layer was successively washed with water and saturated brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. customThe solvent was evaporated under reduced pressure
  5. customthe residue was purified by silica gel column chromatography(n-hexane:ethyl acetate=2:1)

Sources & evidence

ORD record
ord-a0cf88a121c546898af352b810732bfe
Source dataset
uspto-grants-2001_05
Patent number
US06239131B1

Reaction notes

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