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Ethanol → 3-[3-[1-(2-Thenoylmethyl)-2-oxo-5-pivaloyl-8-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepin-3-yl]ureido]benzoic acid

HRID 1979351
Notes
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Reaction equation

HRID 1979351 reaction equation
[C:1]1([C:6]([CH2:8][N:9]2[C:15]3[CH:16]=[C:17]([CH3:20])[CH:18]=[CH:19][C:14]=3[N:13]([C:21](=[O:26])[C:22]([CH3:25])([CH3:24])[CH3:23])[CH2:12][CH:11]([NH:27][C:28]([NH:30][C:31]3[CH:36]=[CH:35][CH:34]=[C:33]([C:37]([O:39]CC)=[O:38])[CH:32]=3)=[O:29])[C:10]2=[O:42])=[O:7])[S:5][CH:4]=[CH:3][CH:2]=1.C(O)C.O.[OH-].[Li+]>O1CCCC1>[C:1]1([C:6]([CH2:8][N:9]2[C:15]3[CH:16]=[C:17]([CH3:20])[CH:18]=[CH:19][C:14]=3[N:13]([C:21](=[O:26])[C:22]([CH3:24])([CH3:25])[CH3:23])[CH2:12][CH:11]([NH:27][C:28](=[O:29])[NH:30][C:31]3[CH:32]=[C:33]([CH:34]=[CH:35][CH:36]=3)[C:37]([OH:39])=[O:38])[C:10]2=[O:42])=[O:7])[S:5][CH:4]=[CH:3][CH:2]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 702EthanolHCID 168937Lithium hydroxide, monohydrateHCID 212015731-[1-(2-thenoylmethyl)-2-oxo-5-pivaloyl-8-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepin-3-yl]-3-(3-ethoxycarbonylphenyl)urea

Product 1

HCID 212019083-[3-[1-(2-Thenoylmethyl)-2-oxo-5-pivaloyl-8-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepin-3-yl]ureido]benzoic acidYield 78%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

1-[1-(2-Thenoylmethyl)-2-oxo-5-pivaloyl-8-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepin-3-yl]-3-(3-ethoxycarbonylphenyl)urea (0.67 g) was suspended in a mixed solvent of ethanol (10 ml) and tetrahydrofuran (10 ml), aqueous lithiumhydroxide monohydrate (0.24 g) solution (10 ml) was added, and the mixture was stirred for 3 hours at room temperature. The reaction mixture was concentrated under reduced pressure, weakly acidified with 1N hydrochloric acid, extracted with methylene chloride. The organic layer was successively washed with water and saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, the residue was suspended in a mixed solvent of methanol and ethyl acetate, crystals so precipitated were collected by filtration, to thereby obtain 0.48 g of the titled compound as white crystals (Yield: 78%).

Workup

  1. additionwas added
  2. concentrationThe reaction mixture was concentrated under reduced pressure
  3. extractionextracted with methylene chloride
  4. washThe organic layer was successively washed with water and saturated brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. customThe solvent was evaporated under reduced pressure
  7. customso precipitated
  8. filtrationwere collected by filtration

Sources & evidence

ORD record
ord-120c8696d94c41fabf58bfe958af4b6f
Source dataset
uspto-grants-2001_05
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US06239131B1

Reaction notes

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