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. 24242-20-4, name is 5-Aminopicolinic acid. This compound has unique chemical properties. The synthetic route is as follows. Application In Synthesis of 5-Aminopicolinic acid
5-Amino-2- nicotinic acid (6.38 g) was dissolved in methyl alcohol (50 mL) and then cooled to 0 0C in an ice- water bath. Thionyl chloride (8.3 mL) was then added to the solution. The reaction mixture was refluxed for 3O h. After evaporating the methanol, the residue was neutralized with a saturated solution of sodium bicarbonate and was extracted with ethyl acetate. The organic layer was washed with water, brine, dried over sodium sulfate and filtered. The filtrate was concentrated to give 2.31 g of the final ester (Rf: 0.473 min, Condition B, M+H+: 153).
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Reference:
Patent; SCIOS, INC.; WO2006/112828; (2006); A1;,
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