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, 52.5 g (0.27 mol) of 3-nitrophthalic anhydride were stirred in portions over the course of 30 minutes into 75 ml of concentrated aqueous ammonia at room temperature. The mixture was then cooled to 0 C., after which a precipitate crystallized out and was filtered off with suction. This precipitate was dissolved in 125 ml of water by gently heating, and 25.6 ml of 32% strength hydrochloric acid were rapidly added. The mixture was cooled to 0 C., and the crystals which separated out were filtered off with suction. 45 g of the product were obtained.
641-70-3 3-Nitrophthalic anhydride 21631, abenzofuran compound, is more and more widely used in various fields.
Reference£º
Patent; Abbott GmbH & Co. KG; US6737421; (2004); B1;,
Benzofuran – Wikipedia
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