21905-86-2,Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. Cinnoline-4-carboxylic acid,21905-86-2, This compound has unique chemical properties. The synthetic route is as follows.
EXAMPLE 2 Potassium Cinnoline-4-carboxylate (2) 5.10 g of (1) was added over 30 minutes to a vigorously stirred solution of 2.02 g of potassium carbonate in 25 ml of water, at room temperature. The resulting mixture was stirred for one hour at room temperature, then treated with charcoal, and after filtration the water was evaporated. The residue was azeotropically distilled with toluene and dried at 70 C. under reduced pressure, to give 2, as a light tan powder, m.p.: above 280 C., 21905-86-2
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Reference£º
Patent; E. I. Du Pont de Nemours and Company; US4699651; (1987); A;,
Cinnoline – Wikipedia
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