反应详情

2′-(2,2-Dimethylpropoxy)-7′-(5-pyrimidinyl)spiro[1,3-oxazole-4,9′-xanthen]-2-amine (139 mg) was subjected to chromatography using 40:60:0.2 MeOH:CO2:DEA at 70 ml/min on a 20×250 mm, 5 μm ChiralPak AD-H column and 100-bar system pressure. The first peak (RT=2.0 min) provided (R)-2′-(2,2-dimethylpropoxy)-7′-(5-pyrimidinyl)spiro[1,3-oxazole-4,9′-xanthen]-2-amine (50.9 mg, >99% ee), and the second peak (RT=3.9 min) provided (S)-2′-(2,2-dimethylpropoxy)-7′-(5-pyrimidinyl)spiro[1,3-oxazole-4,9′-xanthen]-2-amine (52.7 mg, >99% ee).