Sulfuric Acid → HCID 18001035, compound

HRID 1249984Notes

Reaction equation

HRID 1249984 reaction equation
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[N:11]([C:12](=[O:29])[C:13]3[CH:18]=[CH:17][C:16]([CH:19]([OH:28])[CH2:20][C:21]4[CH:26]=[CH:25][CH:24]=[CH:23][C:22]=4[CH3:27])=[CH:15][CH:14]=3)[CH2:10][CH2:9][CH2:8][CH:7]([CH2:30][C:31]([N:33]3[CH2:38][CH2:37][N:36]([CH3:39])[CH2:35][CH2:34]3)=[O:32])[C:6]=2[CH:40]=1.[C:41](OC(=O)C)(=[O:43])[CH3:42].S(=O)(=O)(O)O.C(=O)([O-])O.[Na+]>C(OCC)(=O)C.C(O)(=O)C>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[N:11]([C:12](=[O:29])[C:13]3[CH:18]=[CH:17][C:16]([CH:19]([O:28][C:41](=[O:43])[CH3:42])[CH2:20][C:21]4[CH:26]=[CH:25][CH:24]=[CH:23][C:22]=4[CH3:27])=[CH:15][CH:14]=3)[CH2:10][CH2:9][CH2:8][CH:7]([CH2:30][C:31]([N:33]3[CH2:38][CH2:37][N:36]([CH3:39])[CH2:35][CH2:34]3)=[O:32])[C:6]=2[CH:40]=1

Participants

7

Reactant 4

HCID 1118Sulfuric AcidHCID 7918Acetic AnhydrideHCID 516892Sodium BicarbonateHCID 18001087HCID 18001087, compound

Product 1

HCID 18001035HCID 18001035, compound

Reagents, catalysts & solvents 2

HCID 176Acetic AcidSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a mixture of 7-chloro-5-[(4-methyl-1-piperazinyl)carbonylmethyl]-1-{4-[2-(2-methylphenyl)-1-hydroxyethyl]benzoyl}-2,3,4,5-tetrahydro-1H-benzazepine (0.5 g), acetic acid (5 ml) and acetic anhydride (3 ml) is added a drop of conc. sulfuric acid, and the mixture is stirred at room temperature for 12 hours, and subsequently stirred at a temperature from 60-70° C. for 6 hours. The reaction mixture is poured into ice-water, and thereto is added ethyl acetate (30 ml). The mixture is basified with sodium hydrogen carbonate, and extracted with ethyl acetate. The organic layer is washed successively with a saturated aqueous sodium hydrogen carbonate solution and a saturated aqueous sodium chloride solution, dried over magnesium sulfate, and concentrated. The residue is purified by silica gel column chromatography (solvent; methylene chloride:methanol=20:1) to give 7-chloro-5-[(4-methyl-1-piperazinyl)carbonylmethyl]-1-{4-[2-(2-methylphenyl)-1-acetyloxyethyl]-benzoyl}-2,3,4,5-tetrahydro-1H-benzazepine (0.36 g) as colorless amorphous.

Workup

  1. stirringsubsequently stirred at a temperature from 60-70° C. for 6 hours
  2. extractionextracted with ethyl acetate
  3. washThe organic layer is washed successively with a saturated aqueous sodium hydrogen carbonate solution
  4. dry with materiala saturated aqueous sodium chloride solution, dried over magnesium sulfate
  5. concentrationconcentrated
  6. customThe residue is purified by silica gel column chromatography (solvent; methylene chloride:methanol=20:1)

Sources & evidence

ORD record
ord-94b990d05f774df78dd5a49c41ba2633
Source dataset
uspto-grants-2002_01
Patent number
US06335327B1

Reaction notes

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