Tributylphosphine → 4-(4-Chloro-2-fluoroanilino)-7-(2-ethoxycarbonylpyrid-4-yl)methoxy-6-methoxyquinazoline

HRID 279669Notes

Reaction equation

HRID 279669 reaction equation
N(C(N1CCCCC1)=O)=NC(N1CCCCC1)=O.[Cl:19][C:20]1[CH:39]=[CH:38][C:23]([NH:24][C:25]2[C:34]3[C:29](=[CH:30][C:31]([OH:37])=[C:32]([O:35][CH3:36])[CH:33]=3)[N:28]=[CH:27][N:26]=2)=[C:22]([F:40])[CH:21]=1.O[CH2:42][C:43]1[CH:48]=[CH:47][N:46]=[C:45]([C:49]([O:51][CH2:52][CH3:53])=[O:50])[CH:44]=1.C(P(CCCC)CCCC)CCC>C(Cl)Cl>[Cl:19][C:20]1[CH:39]=[CH:38][C:23]([NH:24][C:25]2[C:34]3[C:29](=[CH:30][C:31]([O:37][CH2:42][C:43]4[CH:48]=[CH:47][N:46]=[C:45]([C:49]([O:51][CH2:52][CH3:53])=[O:50])[CH:44]=4)=[C:32]([O:35][CH3:36])[CH:33]=3)[N:28]=[CH:27][N:26]=2)=[C:22]([F:40])[CH:21]=1

Participants

6

Reactant 4

HCID 13831TributylphosphineHCID 730421,1'-(Azodicarbonyl)dipiperidineHCID 14541449Ethyl 4-(hydroxymethyl)picolinateHCID 1355137204-(4-Chloro-2-fluorophenylamino)-7-hydroxy-6-methoxyquinazoline

Product 1

HCID 226249784-(4-Chloro-2-fluoroanilino)-7-(2-ethoxycarbonylpyrid-4-yl)methoxy-6-methoxyquinazolineYield 60%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

1,1′-(azodicarbonyl)dipiperidine (840 mg, 3 mmol) was added in portions to a mixture of 4-(4-chloro-2-fluoroanilino)-7-hydroxy-6-methoxyquinazoline (315 mg, 1 mmol), ethyl 4-hydroxymethyl-2-pyridinecarboxylate (250 mg, 1.4 mmol), (J. Het. Chem. 1993, 30, 631-635) and tributylphosphine (800 μl, 3 mmol) in methylene chloride (50 ml) at 0° C. The mixture was allowed to warm to ambient temperature over 2 hours, the insolubles were removed by filtration and the filtrate was washed with water and brine, dried (Na2SO4) and the solvent removed by evaporation. The residue was purified by column chromatography eluting with methylene chloride/methanol (10:0 increasing to 9:1). The purified product was recrystallised from methylene chloride/hexane to give 4-(4-chloro-2-fluoroanilino)-7-(2-ethoxycarbonylpyrid-4-yl)methoxy-6-methoxyquinazoline (285 mg, 60%).

Workup

  1. customthe insolubles were removed by filtration
  2. washthe filtrate was washed with water and brine
  3. dry with materialdried (Na2SO4)
  4. customthe solvent removed by evaporation
  5. customThe residue was purified by column chromatography
  6. washeluting with methylene chloride/methanol (10:0 increasing to 9:1)
  7. customThe purified product was recrystallised from methylene chloride/hexane

Sources & evidence

ORD record
ord-3620cf57ac55434eaf641de3e767a59d
Source dataset
uspto-grants-2002_03
Patent number
US06362336B1

Reaction notes

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