Oxalyl chloride → 2-(3-(Benzyloxy)phenyl)-4-chloro-7-methoxy-6-(2-methoxyethoxy)quinazoline

HRID 1808532Notes

Reaction equation

HRID 1808532 reaction equation
[CH2:1]([O:8][C:9]1[CH:10]=[C:11]([C:15]2[NH:24][C:23](=O)[C:22]3[C:17](=[CH:18][C:19]([O:31][CH3:32])=[C:20]([O:26][CH2:27][CH2:28][O:29][CH3:30])[CH:21]=3)[N:16]=2)[CH:12]=[CH:13][CH:14]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(Cl)(=O)C([Cl:36])=O>C(Cl)Cl.CN(C=O)C>[CH2:1]([O:8][C:9]1[CH:10]=[C:11]([C:15]2[N:24]=[C:23]([Cl:36])[C:22]3[C:17](=[CH:18][C:19]([O:31][CH3:32])=[C:20]([O:26][CH2:27][CH2:28][O:29][CH3:30])[CH:21]=3)[N:16]=2)[CH:12]=[CH:13][CH:14]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

5

Reactant 2

HCID 65578Oxalyl chloride2×HCID 1362032432-(3-(benzyloxy)phenyl)-7-methoxy-6-(2-methoxyethoxy)quinazolin-4(3H)-one

Product 1

HCID 593619262-(3-(Benzyloxy)phenyl)-4-chloro-7-methoxy-6-(2-methoxyethoxy)quinazolineYield 45%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideCatalystHCID 6344DichloromethaneSolvent

Procedure

To a suspension of 2-(3-(benzyloxy)phenyl)-7-methoxy-6-(2-methoxyethoxy)quinazolin-4(3H)-one (3.28 g, 7.58 mmol) in CH2Cl2 (100 mL) was added oxalyl chloride (2.20 mL, 24.8 mmol) and 2 drops of DMF. The mixture was stirred at RT for 6 h. An additional aliquot of oxalyl chloride (1.20 mL, 13.5 mmol) was added. Stirring was continued at RT overnight, upon which the mixture was concentrated in vacuo, taken up in CHCl3 (100 mL) and washed with sat. NaHCO3 (3×50 mL), water (2×50 mL) and brine (1×50 mL). The organic layer was dried (Na2SO4), filtered and concentrated in vacuo to give 2-(3-(benzyloxy)phenyl)-4-chloro-7-methoxy-6-(2-methoxyethoxy)quinazoline (1.52 g, 3.37 mmol, 45%). MS 451 (M+1 Cl isotope pattern). HPLC retention time 10.84 mins. (10-95-13 method).

Workup

  1. stirringStirring
  2. waitwas continued at RT overnight, upon which
  3. concentrationthe mixture was concentrated in vacuo
  4. washwashed with sat. NaHCO3 (3×50 mL), water (2×50 mL) and brine (1×50 mL)
  5. dry with materialThe organic layer was dried (Na2SO4)
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-953c20e3b1a44c8aa750ac7b3863946e
Source dataset
uspto-grants-2013_01
Patent number
US08357693B2

Reaction notes

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