2-Chloro-4,5-difluorobenzoyl Isocyanate → 1-(2-Chloro-4,5-difluorobenzoyl)-3-(6-methoxy-2,4-dioxo-1,2,3,4-tetrahydro-quinazolin-7-yl)urea

HRID 855799Notes

Reaction equation

HRID 855799 reaction equation
[NH2:1][C:2]1[CH:11]=[C:10]2[C:5]([C:6](=[O:13])[NH:7][C:8](=[O:12])[NH:9]2)=[CH:4][C:3]=1[O:14][CH3:15].[Cl:16][C:17]1[CH:27]=[C:26]([F:28])[C:25]([F:29])=[CH:24][C:18]=1[C:19]([N:21]=[C:22]=[O:23])=[O:20]>C(#N)C.CN1CCCC1=O>[Cl:16][C:17]1[CH:27]=[C:26]([F:28])[C:25]([F:29])=[CH:24][C:18]=1[C:19]([NH:21][C:22]([NH:1][C:2]1[CH:11]=[C:10]2[C:5]([C:6](=[O:13])[NH:7][C:8](=[O:12])[NH:9]2)=[CH:4][C:3]=1[O:14][CH3:15])=[O:23])=[O:20]

Participants

5

Reactant 2

HCID 115575832-Chloro-4,5-difluorobenzoyl IsocyanateHCID 688051297-Amino-6-methoxyquinazoline-2,4(1H,3H)-dione

Product 1

HCID 690985201-(2-Chloro-4,5-difluorobenzoyl)-3-(6-methoxy-2,4-dioxo-1,2,3,4-tetrahydro-quinazolin-7-yl)ureaYield 30%

Reagents, catalysts & solvents 2

HCID 6342AcetonitrileSolventHCID 13387N-methyl-2-pyrrolidoneSolvent

Procedure

100 mg (0.53 mmol) of 7-amino-6-methoxy-1H-quinazoline-2,4-dione were suspended in 20 ml of acetonitrile and 2 ml of N-methyl-2-pyrrolidinone, and 200 mg (0.97 mmol) of 2-chloro-4,5-difluorobenzoyl isocyanate (example 1a) were added. The reaction mixture was heated to boiling and then quenched with methanol and concentrated in vacuo. The residue was stirred with acetonitrile, and the resulting precipitate was filtered off. 64 mg (30%) of the desired product were obtained.

Workup

  1. temperatureThe reaction mixture was heated
  2. customquenched with methanol
  3. concentrationconcentrated in vacuo
  4. filtrationthe resulting precipitate was filtered off

Sources & evidence

ORD record
ord-a73a9f8912c54ee1907d6ead7f5b8e2f
Source dataset
uspto-grants-2007_08
Patent number
US07262220B2

Reaction notes

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