反应详情

A solution of tert-butyl 3-cyclohexylmethyl-4-(4-isopropyl-2-oxooxazolidin-3-yl)-4-oxobutyrate (2.90 g, 7.6 mmol) in methylene chloride (10 mL) was treated with trifluoroacetic acid (4.83 g, 42.5 mmol) and the mixture was stirred at ambient temperature for 3 hours. The solvent and excess acid were removed by evaporation at reduced pressure. The residue was dissolved in ether/hexane and product was crystallized out to provide 3-cyclohexylmethyl-4-(4-isopropyl-2-oxooxazolidin-3-yl)-4-oxobutyric acid (2 g, 81%). MS (M+1): 326.

1. customThe solvent and excess acid were removed by evaporation at reduced pressure
2. dissolutionThe residue was dissolved in ether/hexane
3. customproduct was crystallized out