Dimethylformamide → HCID 11088974, compound

HRID 1791752Notes

Reaction equation

HRID 1791752 reaction equation
[CH3:1][N:2]1[CH2:7][CH2:6][CH:5]([CH2:8][CH2:9][O:10][C:11]2[CH:20]=[C:19]3[C:14]([C:15](=O)[NH:16][CH:17]=[N:18]3)=[CH:13][C:12]=2[O:22][CH3:23])[CH2:4][CH2:3]1.CN(C=O)C.S(Cl)([Cl:31])=O>>[Cl:31][C:15]1[C:14]2[C:19](=[CH:20][C:11]([O:10][CH2:9][CH2:8][CH:5]3[CH2:6][CH2:7][N:2]([CH3:1])[CH2:3][CH2:4]3)=[C:12]([O:22][CH3:23])[CH:13]=2)[N:18]=[CH:17][N:16]=1

Participants

4

Reactant 3

HCID 6228DimethylformamideHCID 24386Thionyl ChlorideHCID 1354507917-(2-(1-Methylpiperidin-4-yl)ethoxy)-6-methoxy-3,4-dihydroquinazolin-4-one

Product 1

HCID 11088974HCID 11088974, compoundYield 54%

Procedure

A solution of 7-(2-(1-methylpiperidin-4-yl)ethoxy)-6-methoxy-3,4-dihydroquinazolin-4-one (3.1 g, 9.8 mmol) in thionyl chloride (40 ml) containing DMF (400 μl) was refluxed for 4 hours. After cooling, the volatiles were removed under vacuum. The residue was partitioned between methylene chloride and water and the pH of the aqueous layer was adjusted to 11 with solid sodium hydrogen carbonate and aqueous ammonia. The organic layer was separated, dried (MgSO4) and evaporated. The residue was triturated with ether, filtered, washed with ether and dried under vacuum to give 4-chloro-6-methoxy-7-(2-(1-methylpiperidin-4-yl)ethoxy)quinazoline (1.83 g, 54%).

Workup

  1. temperaturewas refluxed for 4 hours
  2. temperatureAfter cooling
  3. customthe volatiles were removed under vacuum
  4. customThe residue was partitioned between methylene chloride and water
  5. customThe organic layer was separated
  6. dry with materialdried (MgSO4)
  7. customevaporated
  8. customThe residue was triturated with ether
  9. filtrationfiltered
  10. washwashed with ether
  11. customdried under vacuum

Sources & evidence

ORD record
ord-1821216e182c4f2085528200cb39298b
Source dataset
uspto-grants-2006_07
Patent number
US07074800B1

Reaction notes

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