反应详情

4 M HCl in 1,4-dioxane (6 mL, 24 mmol) was added to a solution of tert-butyl 4-(2-phenyloxazole-4-carbonyl)-3-((pyridin-3-yloxy)methyl)piperazine-1-carboxylate TFA salt (44.8 mg, 0.077 mmol) in MeOH (1 mL). After stirring overnight, 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 22.6 mg (67%) of the desired product as a white solid. LC-MS: RT=4.36 min, [M+H]+=365.0.

1. concentrationthe reaction mixture was concentrated under reduced pressure
2. custompurified by HPLC (5 to 50% MeCN/0.1% TFA in H2O/0.1% TFA gradient)
3. concentrationThe desired chromatography fractions were concentrated under reduced pressure
4. dissolutiondissolved in MeOH (1 mL)
5. additiontreated with 4 M HCl in 1,4-dioxane (6 mL)
6. concentrationThis was concentrated under reduced pressure