Hydrochloric Acid → 2-(2-((Pyridin-3-yloxy)methyl)piperazin-1-yl)thiazole trihydrochloride

Participants

Reaction Steps

4 M HCl in 1,4-dioxane (6 mL, 24 mmol) was added to a solution of tert-butyl 3-((pyridin-3-yloxy)methyl)-4-(thiazol-2-yl)piperazine-1-carboxylate di-TFA salt (130 mg, 0.215 mmol) in MeOH (1 mL). After 1 h, the reaction mixture was concentrated under reduced pressure and purified by HPLC (5 to 50% MeCN/0.1% TFA in H2O/0.1% TFA gradient). The desired chromatography fractions were concentrated under reduced pressure, dissolved in MeOH (1 mL), and treated with 4 M HCl in 1,4-dioxane (6 mL). This was concentrated under reduced pressure, yielding 37.9 mg (46%) of the desired product as a white solid. LC-MS: RT=2.64 min, [M+H]+=277.0.

Provenance & Evidence