Hydrochloric Acid → 1-(2-toluoylmethyl)-2-oxo-3-tert-butoxycarbonylamino-5-cyclohexylcarbonyl-8-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepine

HRID 1979424Notes

Reaction equation

HRID 1979424 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]([CH:16]2[CH2:21][CH2:20][CH2:19][CH2:18][CH2:17]2)=[O:15])[CH2:4][CH:3]1[NH:22][C:23]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])=[O:24].Br[CH2:31][C:32]([C:34]1[CH:39]=[CH:38][CH:37]=[CH:36][C:35]=1[CH3:40])=[O:33].[OH-].[Na+].Cl>C1(C)C=CC=CC=1.[Br-].C([N+](CCCC)(CCCC)CCCC)CCC>[C:35]1([CH3:40])[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]([CH:16]3[CH2:21][CH2:20][CH2:19][CH2:18][CH2:17]3)=[O:15])[CH2:4][CH:3]([NH:22][C:23]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])=[O:24])[C:2]2=[O:1])=[O:33])=[CH:39][CH:38]=[CH:37][CH:36]=1

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 124306762-Bromo-2'-methylacetophenoneHCID 212015312-oxo-3-tert-butoxycarbonylamino-5-cyclohexylcarbonyl-8-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepine

Product 1

HCID 212015661-(2-toluoylmethyl)-2-oxo-3-tert-butoxycarbonylamino-5-cyclohexylcarbonyl-8-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepineYield 80.9%

Reagents, catalysts & solvents 2

HCID 74236Tetrabutylammonium BromideCatalystHCID 1140TolueneSolvent

Procedure

2-Oxo-3-tert-butoxycarbonylamino-5-cyclohexylcarbonyl-8-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepine (2.00 g) was suspended in toluene (28 ml), 2-bromo-2′-methylacetophenone (1.28 g), 1N aqueous sodium hydroxide (14 ml) and tetra n-butylammonium bromide (20 mg) were added, and the mixture was stirred for 2 hours at room temperature. The reaction mixture was acidified with 1N hydrochloric acid, extracted with ethyl acetate. The organic layer was successively washed with saturated aqueous sodium bicarbonate and saturated brine, dried over anhydrous magnesium sulfate, the solvent was evaporated under reduced pressure, and diisopropyl was added to the residue for trituration, collected by filtration, to thereby obtain 2.15 g of the titled compound (Yield: 80.7%).

Workup

  1. extractionextracted with ethyl acetate
  2. washThe organic layer was successively washed with saturated aqueous sodium bicarbonate and saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. customthe solvent was evaporated under reduced pressure, and diisopropyl
  5. additionwas added to the residue for trituration
  6. filtrationcollected by filtration

Sources & evidence

ORD record
ord-fb47a364a88643f79fc53c26e58dd962
Source dataset
uspto-grants-2001_05
Patent number
US06239131B1

Reaction notes

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