反应详情

A solution of 2,6-dichloro-4-methyl-nicotinamide (6.40 g) in 2:1 acetic anhydride/acetic acid (156 mL) was treated with sodium nitrite (21.5 g), stirred for 18 hours, poured into diethyl ether (600 mL) and filtered. The filtrate was concentrated with a toluene azeotrope, and the concentrate was treated with brine and extracted with ethyl acetate. The extract was dried (MgSO4), filtered, and concentrated; and this concentrate was suspended in hexane, sonicated and filtered.

1. filtrationfiltered
2. concentrationThe filtrate was concentrated with a toluene azeotrope
3. additionthe concentrate was treated with brine
4. extractionextracted with ethyl acetate
5. dry with materialThe extract was dried (MgSO4)
6. filtrationfiltered
7. concentrationconcentrated
8. customsonicated
9. filtrationfiltered