Reacción #51656

Ecuación de reacción

4.1

tropenol 3,3′,4,4′-tetrafluorobenzilate

bromoethane

→

tropenol 3,3′,4,4′-tetrafluorobenzilate ethylbromide

Disolventes

acetonitrile

dichloromethane

Condiciones de reacción

Tratamiento posterior

1. 1
   Otrothe reaction vessel is sealed
2. 2
   workup.WAITIt is left
3. 3
   workup.WAITto stand at about 20° C. for 3 weeks with the exclusion of light
4. 4
   OtroThe solution is evaporated to dryness
5. 5
   Otrothe residue is recrystallized from acetonitrile

Procedimiento

2.00 g (0.0048 mol) of 4.1 is dissolved in 20 ml dichloromethane and 20 ml acetonitrile, combined with 2.59 g (0.0238 mol) of bromoethane and the reaction vessel is sealed. It is left to stand at about 20° C. for 3 weeks with the exclusion of light. The solution is evaporated to dryness and the residue is recrystallized from acetonitrile. Yield: 1.96 g of 3 (78% of theory); TLC: Rf value: 0.11 (eluant as in step II.1); melting point: 247° C.

Fuente