Hydrochloric Acid → 3-Fluoro-4-(2-(5-(methoxymethyl)pyridin-2-ylamino)thiazol-5-ylthio)picolinic acid

Participants

Reaction Conditions

Reaction Steps

Methyl 3-fluoro-4-(2-(5-(methoxymethyl)pyridin-2-ylamino)thiazol-5-ylthio)picolinate (0.061 g, 0.150 mmol) was dissolved in THF (5 mL) and treated aq. NaOH (5N, 0.195 mL, 0.975 mmol). The reaction was stirred at 23° C. for 30 minutes, then water (1 mL) was added and the reaction was stirred for 30 more minutes. The reaction was then acidified with conc. HCl to pH ˜2 and water was added again. This was extracted with ethyl acetate/THF and the combined organic extracts were dried over anhydrous magnesium sulfate, filtered and concentrated to give the title material (0.035 g, 59%) as a solid which was used as such for the next reaction. HPLC ret. time (Condition B): 1.120 min. LC/MS (M+H)+: 393.

Provenance & Evidence