反应详情

温度

0 °C

876 mg (2 eq) of sodium hydride is added gradually at 0° C. under nitrogen to a solution of 865 mg of 5-hydroxynicotinonitrile (7.2 mmol) in 15 mL of dimethylacetamide. The mixture is stirred 10 min at 0° C. before adding 2.24 g (1.5 aq) of 3,5-difluorobenzyl bromide. The mixture is placed under stirring for 2.5 additional hours before being diluted in an ethyl acetate fraction and being washed with aqueous fractions. The organic phases are isolated, dried and concentrated. The solid residue obtained is recrystallized in methanol to yield 1.1 g (68% of 5-(3,5-difluorobenzyloxy)nicotinonitrile in the form of a beige powder.

1. stirringunder stirring for 2.5 additional hours
2. washbeing washed with aqueous fractions
3. customThe organic phases are isolated
4. customdried
5. concentrationconcentrated
6. customThe solid residue obtained
7. customis recrystallized in methanol