Réaction #531866

Équation de réaction

Compound 978

1-(3-Chloro-phenyl)-3-(1-hydroxymethyl-pentyl)-urea

POCl3

→

(4-Butyl-4,5-dihydro-oxazol-2-yl)-(3-chloro-phenyl)-amine

Conditions de réaction

Traitement

1. 1
   AutreThe solvent was removed via reduced pressure distillation
2. 2
   LavageThe residue was washed with aqueous sodium bicarbonate
3. 3
   workup.DISSOLUTIONdissolved in EtOAc
4. 4
   AutreThe solvent was dried
5. 5
   Filtrationfiltered
6. 6
   Autreevaporated
7. 7
   workup.DISSOLUTIONThe residue was dissolved in acetone (1 mL)
8. 8
   Températurerefluxed with water (2 mL) for 1.5 hrs
9. 9
   ExtractionThe solution was extracted with EtOAc
10. 10
    Autrethe organic layer evaporated
11. 11
    Autrethe residue chromatographed on silica
12. 12
    Autreto give the target compound

Mode opératoire

Compound 978 (50 mg) was treated with POCl3 (1.0 mL). This was stirred overnight. The solvent was removed via reduced pressure distillation. The residue was washed with aqueous sodium bicarbonate and then dissolved in EtOAc. The solvent was dried, filtered and evaporated. The residue was dissolved in acetone (1 mL) and refluxed with water (2 mL) for 1.5 hrs. The solution was extracted with EtOAc, the organic layer evaporated and the residue chromatographed on silica to give the target compound. 1H NMR (300 MHz, CDCl3) δ=7.38 (s, 1H), 7.15 (d, J=8.0 Hz, 1H), 7.05 (br, 1H), 7.00 (d, 7.5 Hz, 1H), 4.47 (m, 1H), 3.95 (m, 2H), 1.8-1.2 (m, 6H), 0.95 (m, 3H). ESIMS=224.9 m/z (M+H)

Source