Réaction #77451

Équation de réaction

ethyl 3,4-difluorophenylglyoxylate

→

Ethyl 3,3′,4,4′-tetrafluorobenzilate

Solvants

THF

Conditions de réaction

Traitement

1. 1
   Autrethe mixture obtained

Mode opératoire

The Grignard reagent is prepared from 2.24 g (0.092 mol) of magnesium chips, a few granules of iodine and 17.80 g (0.092 mol) of 1-bromo-3,4-difluoro-benzene in 100 ml of THF at 50° C. After the halide has all been added, the mixture is stirred for another hour. The Grignard reagent thus obtained is added dropwise to 18.81 g (0.088 mol) of ethyl 3,4-difluorophenylglyoxylate in 80 ml of THF at 10°-15° C. and the mixture obtained is stirred for 2 hours at 5° C.

Source