641-70-3, 3-Nitrophthalic anhydride is a benzofuran compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated
641-70-3, Example 1. Obtaining 5-nitro-2,3-dihydrophthalazine-1,4-dione A glass flask of the volume 1 I provided with an agitator, a thermometer, a condenser and a capillary was filled with 600 ml of icy acetic acid and 154.5 g (0.8 mole) of 3-nitrophthalic acid anhydride, thereafter it was heated to the temperature of 11O0C and gradually 44.1 g (0.88 mole) of hydrazine hydrate was added. Next the reaction mixture was kept at the state of boiling for 30 minutes thereafter it was cooled to the temperature of 8O0C, the crystals of 5-nitro-2,3-dihydrophthalazine-1 ,4-dione were filtered, the sediment was washed on a filter with 50 ml of acetic acid and two times with 40 ml of distilled water. The total amount of 5-nitro-2,3-dihydrophthalazine- 1 ,4-dione was 228.7 g, the yield was 92%.
The synthetic route of 641-70-3 has been constantly updated, and we look forward to future research findings.
Reference£º
Patent; ABIDOPHARMA PL SP. Z.O.O; ABIDOV, Admir, Musaevich; ISHMURATOV, Aleksei Silantievich; VILKIN, Vitalij; DANILOVA, lrina Georgievna; WO2010/82858; (2010); A2;,
Benzofuran – Wikipedia
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