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Çë½ÌÈçÏÂÎÄÏ׵ķÒ룬ÓÈÆäÊǵÚÒ»¾ä¡£ Ten grams of 5-nitroquinoline,dissolved in 50 ml. of water by the addition of sulfuric acid,was poured into 2 liters of water at 60¡æ. Sodium hydroxidesolution was added until the PH was just sufficient to keepthe nitroquinoline in solution. Upon introducing, withstirring, a 5.25% by weight solution of sodium hypochlorite,a solid began to appear. After standing overnight,filtering off the solid, digesting it with 10% by weight sodiumhydroxide solution and making acid with sulfuric acid, an 85% yield of 2-hydroxy-5-nitmqoquinoline precipitated. |
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