Benzoyl chloride → 5-(4-Benzoylaminophenyl)-1H-naphtho[1,2-b][1,4]diazepine-2,4(3H,5H)-dione

HRID 1049675Notes

Reaction equation

HRID 1049675 reaction equation
[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:14](=[O:15])[CH2:13][C:12](=[O:16])[NH:11][C:10]3[C:17]4[C:22]([CH:23]=[CH:24][C:9]2=3)=[CH:21][CH:20]=[CH:19][CH:18]=4)=[CH:4][CH:3]=1.[C:25](Cl)(=[O:32])[C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1.C(=O)([O-])O.[Na+]>N1C=CC=CC=1>[C:25]([NH:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:14](=[O:15])[CH2:13][C:12](=[O:16])[NH:11][C:10]3[C:17]4[C:22]([CH:23]=[CH:24][C:9]2=3)=[CH:21][CH:20]=[CH:19][CH:18]=4)=[CH:4][CH:3]=1)(=[O:32])[C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1

Participants

5

Reactant 3

HCID 7412Benzoyl chlorideHCID 516892Sodium BicarbonateHCID 1176991675-(4-Aminophenyl)-1H-naphtho[1,2-b][1,4]diazepine-2,4(3H,5H)-dione

Product 1

HCID 716569715-(4-Benzoylaminophenyl)-1H-naphtho[1,2-b][1,4]diazepine-2,4(3H,5H)-dioneYield 91%

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Procedure

5-(4-Aminophenyl)-1H-naphtho[1,2-b][1,4]diazepine-2,4(3H,5H)-dione (30 mg, 0.095 mmol), dry pyridine (3 mL), and benzoyl chloride (35 μL, 0.3 mmol) were mixed, and the mixture was stirred at room temperature for 4 hours and 30 minutes. The reaction mixture was added with saturated aqueous sodium hydrogencarbonate, the mixture was extracted with chloroform, and the organic layer was washed with saturated brine, and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel chromatography (methanol/chloroform=1/10) to give the title compound (36 mg, yield 91%) as white powder.

Workup

  1. extractionthe mixture was extracted with chloroform
  2. washthe organic layer was washed with 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 chromatography (methanol/chloroform=1/10)

Sources & evidence

ORD record
ord-ee57103e91c44445b90595a0a72ad908
Source dataset
uspto-grants-2016_07
Patent number
US09382236B2

Reaction notes

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