反应详情

Methyl 2-cyano-3-hydroxy-3-(2,3,4,5-tetrafluorophenyl)acrylate (75.1 g) is added to a solution of sodium hydroxyde (110 g) in water (1.1 liter) and the mixture is stirred at room temperature for 26 hours. To the reaction mixture is added ice (1.3 Kg) and conc. HCl. After 1 hour, the precipitate is filtered and washed with dil. HCl to yield 2-(2,3,4,5-tetrafluorobenzoyl)acetonitrile (52.7 g) as a light cream colored powder, m.p. 60°-61° C.

1. waitAfter 1 hour
2. filtrationthe precipitate is filtered
3. washwashed with dil. HCl