Tripropylamine → 4-Chloro-2-phenoxymethylquinazoline

HRID 480596Notes

Reaction equation

HRID 480596 reaction equation
O[C:2]1[C:11]2[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=2)[N:5]=[C:4]([CH2:12][O:13][C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)[N:3]=1.C(N(CCC)CCC)CC.P(Cl)(Cl)([Cl:32])=O>>[Cl:32][C:2]1[C:11]2[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=2)[N:5]=[C:4]([CH2:12][O:13][C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)[N:3]=1

Participants

4

Reactant 3

HCID 7616TripropylamineHCID 24813Phosphorus oxychlorideHCID 178418749HCID 178418749, compound

Product 1

HCID 219910934-Chloro-2-phenoxymethylquinazoline

Conditions

Temperature
110 °C

Procedure

To a solution of 4-hydroxy-2-phenoxymethylquinazoline (2 g, 7.93 mmol) in phosphorus oxychloride (10 mL) is added tripropylamine (3.02 mL, 15.8 mmol) and the reaction mixture is heated for 30 minutes at 110° C. The excess phosphorus oxychloride is evaporated in vacuo, the residue is poured on ice cold aqueous NaHCO3 and extracted with ethyl acetate. The organic layer is washed with brine, dried, filtered and evaporated. The resulting residue is purified on flash chromatography (SiO2, hexane/AcOEt gradient) to give 4-chloro-2-phenoxymethylquinazoline.

Workup

  1. customThe excess phosphorus oxychloride is evaporated in vacuo
  2. additionthe residue is poured on ice cold aqueous NaHCO3
  3. extractionextracted with ethyl acetate
  4. washThe organic layer is washed with brine
  5. customdried
  6. filtrationfiltered
  7. customevaporated
  8. customThe resulting residue is purified on flash chromatography (SiO2, hexane/AcOEt gradient)

Sources & evidence

ORD record
ord-43a80436d4fc4b57aa1b9bcc392f708f
Source dataset
uspto-grants-2003_11
Patent number
US06653300B2

Reaction notes

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