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Potassium Carbonate → 7-(2-(2-Bromoethoxy)ethoxy)-4-(4-chloro-2-fluoroanilino)-6-methoxyquinazoline

HRID 2227970
Notes
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Reaction equation

HRID 2227970 reaction equation
Br[CH2:2][CH2:3][O:4][CH2:5][CH2:6][Br:7].[Cl:8][C:9]1[CH:28]=[CH:27][C:12]([NH:13][C:14]2[C:23]3[C:18](=[CH:19][C:20]([OH:26])=[C:21]([O:24][CH3:25])[CH:22]=3)[N:17]=[CH:16][N:15]=2)=[C:11]([F:29])[CH:10]=1.C(=O)([O-])[O-].[K+].[K+]>CN(C=O)C>[Br:7][CH2:6][CH2:5][O:4][CH2:3][CH2:2][O:26][C:20]1[CH:19]=[C:18]2[C:23]([C:14]([NH:13][C:12]3[CH:27]=[CH:28][C:9]([Cl:8])=[CH:10][C:11]=3[F:29])=[N:15][CH:16]=[N:17]2)=[CH:22][C:21]=1[O:24][CH3:25]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 21521Bis(2-bromoethyl) etherHCID 1355137204-(4-Chloro-2-fluorophenylamino)-7-hydroxy-6-methoxyquinazoline

Product 1

HCID 187534287-(2-(2-Bromoethoxy)ethoxy)-4-(4-chloro-2-fluoroanilino)-6-methoxyquinazolineYield 52.3%

Reagents, catalysts & solvents 1

HCID 6228
Dimethylformamide
Solvent

Procedure

2-Bromoethyl ether (1.57 ml, 12 mmol) was added to a mixture of 4-(4-chloro-2-fluoroanilino)-7-hydroxy-6-methoxyquinazoline (1 g, 3.1 mmol), (prepared as described for the starting material in Example 2), and potassium carbonate (1.73 g, 12 mmol) in DMF (10 ml). The mixture was s for 18 hours at ambient temperature and was partitioned between ethyl acetate and water. The organic layer was separated, washed with water and then brine, dried (MgSO4) and the solvent removed by evaporation. The residue was purified by column chromatography on silica eluting with methylene chloride/acetonitrile/methanol (60/38/2). The purified product was triturated with ether, collected by filtration, washed with ether and dried under vacuum to give 7-(2-(2-bromoethoxy)ethoxy)-4-(4-chloro-2-fluoroanilino)-6-methoxyquinazoline (763 mg, 52%).

Workup

  1. custom(prepared
  2. customfor 18 hours
  3. customat ambient temperature
  4. customwas partitioned between ethyl acetate and water
  5. customThe organic layer was separated
  6. washwashed with water
  7. dry with materialbrine, dried (MgSO4)
  8. customthe solvent removed by evaporation
  9. customThe residue was purified by column chromatography on silica eluting with methylene chloride/acetonitrile/methanol (60/38/2)
  10. customThe purified product was triturated with ether
  11. filtrationcollected by filtration
  12. washwashed with ether
  13. customdried under vacuum

Sources & evidence

ORD record
ord-a843b705108e42e6ba5c0ea4e7ef017c
Source dataset
uspto-grants-2002_07
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US06414148B1

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes