反应详情

A solution containing 0.5 g of 3,4-dihydroxy-5-nitrobenzaldehyde in 2.0 ml of butanone was saturated with gaseous hydrogen chloride. After standing over night ether was added to the solution and it was filtered. The product was crystallized from isopropanol, yield 0.2 g (30%), m.p. 139°-141° C.

1. waitAfter standing over night
2. filtrationwas filtered
3. customThe product was crystallized from isopropanol, yield 0.2 g (30%), m.p. 139°-141° C.