Methyl 4-aminopyridine-2-carboxylate → 4-(4,5-dichloro-2-(4-fluoro-2-methoxyphenoxy)benzamido)picolinic Acid

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

4,5-Dichloro-2-(4-fluoro-2-methoxy-phenoxy)benzoic acid (40 mg, 0.12 mmol), methyl 4-aminopicolinate (36.5 mg, 0.24 mmol) and HATU (45.9 mg, 0.12 mmol) were combined in DMF (1 mL) and heated at 50° c. for 2 hours. The reaction was treated with 10 drops of 3 M NaOH and heated at 50° C. for 16 h. The reaction was filtered and purified by reverse phase HPLC using a gradient of acetonitrile in water containing HCl (5 mM) as a modifier (10-99%) to yield 4-(4,5-dichloro-2-(4-fluoro-2-methoxyphenoxy)benzamido)picolinic acid (76) (3.80 mg, 7%). ESI-MS m/z calc. 450.02, found 451.1 (M+1)+; Retention time: 1.47 minutes (3 minutes run).

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