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. 58757-38-3, name is 6-Chloronicotinoyl chloride. This compound has unique chemical properties. The synthetic route is as follows. COA of Formula: C6H3Cl2NO
4-Aminoresorcinol HCI (620 mg, 2.8 mmol) was slurried in THF (10 ml) and triethylamine (1.6 ml, 3 eq) was added. To the stirred solution, cooled with an ice-bath, 6-chloronicotinoyl chloride (2.0 g, 3 eq) dissolved in THF (15 ml) was added dropwise. After the addition the mixture was allowed to stir for 3 days at rt. The reaction was poured out on ice and the solid was filtered. The wet solid was dissolved in THF (25 ml) and ethanol (25 ml) by heating. 2 M NaOH (20 ml) was added dropwise to the still warm solution. After 10 min the organic solvent was removed on the rotory evaporator and the mixture dissolved by adding more water. The solution was neutralized wit 6 M HCI (6 ml) and the solid was filtered to give 6-chloro-N-(2,4-dihydroxyphenyl)pyridine-3- carboxamide (0.71 g, 71% yield, m/z (M-l) 263.1).
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Reference:
Patent; KARIN & STEN MORTSTEDT CBD SOLUTIONS AB; SOHN, Daniel Dungan; (185 pag.)WO2019/197502; (2019); A1;,
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