反应详情

A catalytic amount of concentrated sulfuric acid was added to a solution containing 2.0 g of 3,5-dinitrocatechol in 15 ml of acetanhydride and the solution was mixed for 1/2 hours in 50°-60° C. Ice water wasadded to the rection mixture and the solution was mixed in 0° C. whereby the product was crystallized. The product was filtered and washed with water and dried. Yield 2.75 g (97%), m.p. 115°-117° C.

1. additionthe solution was mixed for 1/2 hours in 50°-60° C
2. additionthe solution was mixed in 0° C. whereby the product
3. customwas crystallized
4. filtrationThe product was filtered
5. washwashed with water
6. customdried