反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
CONDITIONS
反应条件
- 温度
- 50 °C
PROCEDURE
实验过程
A vial was charged with (4R)-2′-bromo-7′-(2,2-dimethylpropoxy)spiro[1,3-oxazole-4,9′-xanthen]-2-amine (52.5 mg, 126 μmol), tetrakis(triphenylphosphine)palladium(0) (14.5 mg, 12.6 μmol), copper(I) iodide (4.79 mg, 25.2 μmol), diisopropylamine (629 μl, 126 μmol), and ethynylcyclopropane (32.0 μl, 377 μmol). The vial was heated in a 50° C. oil bath for 15 h. The reaction mixture was diluted with EtOAc and filtered through celite. The filtrate was evaporated, and the crude residue was purified by chromatography on a 12-g Redi-Sep column, eluting with 0-5% MeOH/DCM to give (4S)-2′-(cyclopropylethynyl)-7′-(2,2-dimethylpropoxy)spiro[1,3-oxazole-4,9′-xanthen]-2-amine as a white solid. MS m/z=403.2 [M+H]+. Calc'd for C25H27N2O3: 403.2.
WORKUP
后处理
- filtrationfiltered through celite
- customThe filtrate was evaporated
- customthe crude residue was purified by chromatography on a 12-g Redi-Sep column
- washeluting with 0-5% MeOH/DCM