7-Benzyloxy-4-(4-chloro-2-fluorophenylamino)-6-methoxyquinazoline hydrochloride → 4-(4-Chloro-2-fluorophenylamino)-7-hydroxy-6-methoxyquinazoline

HRID 2227915Notes

Reaction equation

HRID 2227915 reaction equation
Cl.C([O:9][C:10]1[CH:19]=[C:18]2[C:13]([C:14]([NH:20][C:21]3[CH:26]=[CH:25][C:24]([Cl:27])=[CH:23][C:22]=3[F:28])=[N:15][CH:16]=[N:17]2)=[CH:12][C:11]=1[O:29][CH3:30])C1C=CC=CC=1>C(O)(C(F)(F)F)=O>[Cl:27][C:24]1[CH:25]=[CH:26][C:21]([NH:20][C:14]2[C:13]3[C:18](=[CH:19][C:10]([OH:9])=[C:11]([O:29][CH3:30])[CH:12]=3)[N:17]=[CH:16][N:15]=2)=[C:22]([F:28])[CH:23]=1

Participants

3

Reactant 1

HCID 224782657-Benzyloxy-4-(4-chloro-2-fluorophenylamino)-6-methoxyquinazoline hydrochloride

Product 1

HCID 1355137204-(4-Chloro-2-fluorophenylamino)-7-hydroxy-6-methoxyquinazolineYield 72%

Reagents, catalysts & solvents 1

HCID 6422Trifluoroacetic acidSolvent

Procedure

A solution of 7-benzyloxy-4-(4-chloro-2-fluoroanilino)-6-methoxyquinazoline hydrochloride (892 mg, 2 mmol) in TFA (10 ml) was refluxed for 50 minutes. After cooling, the mixture was poured onto ice. The precipitate was collected by filtration, dissolved in methanol (10 ml) and basified to pH11 with aqueous ammonia. After concentration by evaporation, the solid product was collected by filtration, washed with water then ether and dried under vacuum to give 4-(4-chloro-2-fluoroanilino)-7-hydroxy-6-methoxyquinazoline as a yellow solid (460 mg, 72%). m.p. 141-143° C.

Workup

  1. temperatureAfter cooling
  2. additionthe mixture was poured onto ice
  3. filtrationThe precipitate was collected by filtration
  4. dissolutiondissolved in methanol (10 ml)
  5. concentrationAfter concentration
  6. customby evaporation
  7. filtrationthe solid product was collected by filtration
  8. washwashed with water
  9. dry with materialether and dried under vacuum

Sources & evidence

ORD record
ord-2b0c40bbb9f242c98dc83eae7a2cea54
Source dataset
uspto-grants-2002_07
Patent number
US06414148B1

Reaction notes

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