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-(phenylamino)oxazole-4-carbonyl)-3-((pyridin-3-yloxy)methyl)piperazine-1-carboxylate TFA salt (64.8 mg, 0.109 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 fractions containing the desired product were concentrated under reduced pressure, dissolved in MeOH (1 mL), and treated with 4 M HCl in 1,4-dioxane (6 mL). The mixture was concentrated under reduced pressure to give 41 mg (83%) of the title compound as a white solid. LC-MS: RT=3.29 min, [M+H]+=380.0.

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. additionThe fractions containing the desired product
4. concentrationwere concentrated under reduced pressure
5. dissolutiondissolved in MeOH (1 mL)
6. additiontreated with 4 M HCl in 1,4-dioxane (6 mL)
7. concentrationThe mixture was concentrated under reduced pressure