Triphenylphosphine → 4-(4-Chloro-2-fluoroanilino)-6-methoxy-7-(2-(4-pyridyl)ethoxy)quinazoline hydrochloride

HRID 1420955Notes

Reaction equation

HRID 1420955 reaction equation
N(C(OCC)=O)=NC(OCC)=O.[Cl:13][C:14]1[CH:33]=[CH:32][C:17]([NH:18][C:19]2[C:28]3[C:23](=[CH:24][C:25]([OH:31])=[C:26]([O:29][CH3:30])[CH:27]=3)[N:22]=[CH:21][N:20]=2)=[C:16]([F:34])[CH:15]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[N:54]1[CH:59]=[CH:58][C:57]([CH2:60][CH2:61]O)=[CH:56][CH:55]=1>C(Cl)Cl>[ClH:13].[Cl:13][C:14]1[CH:33]=[CH:32][C:17]([NH:18][C:19]2[C:28]3[C:23](=[CH:24][C:25]([O:31][CH2:61][CH2:60][C:57]4[CH:58]=[CH:59][N:54]=[CH:55][CH:56]=4)=[C:26]([O:29][CH3:30])[CH:27]=3)[N:22]=[CH:21][N:20]=2)=[C:16]([F:34])[CH:15]=1

Participants

6

Reactant 4

HCID 11776TriphenylphosphineHCID 729214-PyridineethanolHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 1355137204-(4-Chloro-2-fluorophenylamino)-7-hydroxy-6-methoxyquinazoline

Product 1

HCID 226250054-(4-Chloro-2-fluoroanilino)-6-methoxy-7-(2-(4-pyridyl)ethoxy)quinazoline hydrochlorideYield 54.2%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Diethyl azodicarboxylate (315 μl, 2 mmol) was added dropwise to a solution of 4-(4-chloro-2-fluoroanilino)-7-hydroxy-6-methoxyquinazoline (319.5 mg, 1 mmol), (prepared as described for the starting material in Example 24), triphenylphosphine (524 mg, 2 mmol) and 2-(4-pyridyl)ethanol (160 mg, 1.25 mmol), (Zhur. Obshchei. Khim. 1958,28, 103-110), in methylene chloride (7 ml). The mixture was stirred for 1 hour at ambient temperature and the solvent was removed by evaporation. The residue was triturated with ether, the solid collected by filtration and purified by column chromatography eluting with methylene chloride/acetonitrile/methanol (85/10/5). The purified solid product was dissolved in a mixture of methylene chloride (50 ml) and methanol (50 ml) and 5M hydrochloric acid in isopropanol (0.5 ml) was added. After diluting with isopropanol (20 ml), the mixture was concentrated by evaporation. The precipitated solid was collected by filtration and dried under vacuum to give 4-(4-chloro-2-fluoroanilino)-6-methoxy-7-(2-(4-pyridyl)ethoxy)quinazoline hydrochloride (125 mg, 25%).

Workup

  1. custom(prepared
  2. customthe solvent was removed by evaporation
  3. customThe residue was triturated with ether
  4. filtrationthe solid collected by filtration
  5. custompurified by column chromatography
  6. washeluting with methylene chloride/acetonitrile/methanol (85/10/5)
  7. dissolutionThe purified solid product was dissolved in a mixture of methylene chloride (50 ml) and methanol (50 ml) and 5M hydrochloric acid in isopropanol (0.5 ml)
  8. additionwas added
  9. additionAfter diluting with isopropanol (20 ml)
  10. concentrationthe mixture was concentrated by evaporation
  11. filtrationThe precipitated solid was collected by filtration
  12. customdried under vacuum

Sources & evidence

ORD record
ord-5c1a6b5d453a4618a7877bf2e2b6665c
Source dataset
uspto-grants-2000_06
Patent number
US06071921

Reaction notes

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