Reacción #710488

Ecuación de reacción

sulfuric acid

N-{2-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]ethylidene}-2-(trifluoromethyl)benzamide

dichloromethane

water

→

desired product

Rendimiento 63.0%

N-{2-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]-1-methoxyethyl}-2-(trifluoromethyl)benzamide

Rendimiento 63.0%

Disolventes

methanol

Condiciones de reacción

Tratamiento posterior

1. 1
   workup.ADDITIONwas added
2. 2
   OtroAfter separation
3. 3
   Extracciónthe aqueous phase was extracted twice with dichloromethane
4. 4
   LavadoThe combined organic phases were washed with 5 mL of water
5. 5
   Secadodried over magnesium sulfate
6. 6
   Filtraciónfiltered
7. 7
   Concentraciónconcentrated
8. 8
   Otroto yield to 0.150 g of crude material, which
9. 9
   Otrowas purified by chromatography on silica gel

Procedimiento

0.16 g of N-{2-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]ethylidene}-2-(trifluoromethyl)benzamide (Int-6) were diluted in 2 mL of methanol. 50 μL of sulfuric acid 99% were added. The reaction mixture was stirred at room temperature for 48 hours. A mixture of dichloromethane (10 mL) and water (5 mL) was added. After separation, the aqueous phase was extracted twice with dichloromethane. The combined organic phases were washed with 5 mL of water, dried over magnesium sulfate, filtered, concentrated to yield to 0.150 g of crude material, which was purified by chromatography on silica gel to yield 0.107 g (63%) of desired product N-{2-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]-1-methoxyethyl}-2-(trifluoromethyl)benzamide (Ia-111), [M+1]=427.

Fuente