反应详情

Hydrogen is injected at 25°-30° C., under normal pressure, into a mixture consisting of 8.9 g of 2-chloro-4-fluoro-5-nitrobenzyl cyanide, 1 g of Raney nickel in 90 ml of absolute ethanol, until the stoichiometric amount of hydrogen has been absorbed. After completion of the absorption of hydrogen, the reaction mixture is filtered and the alkaline filtrate is concentrated by evaporation. The residue consists of 7.5 g of 5-amino-2-chloro-4-fluorobenzyl cyanide having a melting point of 85°-86° C.

1. customis injected at 25°-30° C., under normal pressure, into a mixture
2. customhas been absorbed
3. customAfter completion of the absorption of hydrogen
4. filtrationthe reaction mixture is filtered
5. concentrationthe alkaline filtrate is concentrated by evaporation