Reacción #2286303

Ecuación de reacción

2-[3,5-dichloro-4-(6-chloro-5-isopropyl-pyridazin-3-yloxy)-phenyl]-ethanol

2-[3,5-Dichloro-4-(6-chloro-5-isopropyl-pyridazin-3-yloxy)-phenyl]-ethanol

sodium acetate

acetic acid

→

acetic acid 2-[3,5-dichloro-4-(5-isopropyl-6-oxo-1,6-dihydro-pyridazin-3-yloxy)-phenyl]-ethyl ester

Rendimiento 100.0%

Acetic acid 2-[3,5-dichloro-4-(5-isopropyl-6-oxo-1,6-dihydro-pyridazin-3-yloxy)-phenyl]-ethyl ester

Rendimiento 100.0%

Condiciones de reacción

Tratamiento posterior

1. 1
   TemperaturaAt this time, the reaction mixture was cooled to room temperature
2. 2
   Concentraciónwas concentrated under vacuum
3. 3
   workup.ADDITIONThe resulting residue was diluted with methylene chloride (25 mL)
4. 4
   Lavadowas washed with water (10 mL)
5. 5
   OtroThe organic layer was separated
6. 6
   Lavadowas washed with a saturated aqueous sodium bicarbonate solution (10 mL)
7. 7
   Extracciónextracted with methylene chloride (10 mL)
8. 8
   Secadodried with sodium sulfate
9. 9
   Filtraciónfiltered
10. 10
    Concentraciónconcentrated
11. 11
    Otrodried under high vacuum overnight

Procedimiento

A solution of 2-[3,5-dichloro-4-(6-chloro-5-isopropyl-pyridazin-3-yloxy)-phenyl]-ethanol (17) (500 mg, 1.38 mmol) in glacial acetic acid (5 mL) was treated with sodium acetate (230 mg, 2.8 mmol) and heated to 114° C. for 24 h. At this time, the reaction mixture was cooled to room temperature and was concentrated under vacuum. The resulting residue was diluted with methylene chloride (25 mL) and was washed with water (10 mL). The organic layer was separated and was washed with a saturated aqueous sodium bicarbonate solution (10 mL). The waters layers were combined and extracted with methylene chloride (10 mL). The organic layers were combined and dried with sodium sulfate, filtered, concentrated and dried under high vacuum overnight to afford acetic acid 2-[3,5-dichloro-4-(5-isopropyl-6-oxo-1,6-dihydro-pyridazin-3-yloxy)-phenyl]-ethyl ester (34) (531 mg, 100%) as a white solid; LRMS for C17H18Cl2N2O4 (M+) m/z=385 Molecular Weight=385.2500; Exact Mass=384.0644

Fuente