Réaction #50175

Équation de réaction

Longifolene

BF3

toluene

→

Isolongifolene

Conditions de réaction

Traitement

1. 1
   Températurethan cooled down to room temperature
2. 2
   SéchageAfter drying above Na2SO4 the solvent
3. 3
   workup.DISTILLATIONwas distilled at reduced pressure

Mode opératoire

Over a period of 30 minutes 240 g (0.79 mol ) of Longifolene (1) (80% ex Indian oil of turpentine [a]D=+39.4°) were dropped into a heated solution (60 ° C.) of 90 g toluene and 10 g (0.07 tool ) BF3 -etherate. This was stirred at 100 ° C. for 3 hours, than cooled down to room temperature and neutralized. After drying above Na2SO4 the solvent was distilled at reduced pressure. A raw product of 198 g (of 70.2% according to GLC) remained.

Source