反应详情

Pyridine (1.0 mL), acetic anhydride (1.0 mL) and a few crystals of 4-dimethylaminopyridine were added to a stirred solution of (S)-(-)-N-carbobenzyloxy-3-[2-fluoro-4-[5-aminomethyl-2-oxo-3-oxazolidinyl]phenyl]azetidine (Example 81, Step 8, 1.42 g, 3.56 mmol) in methylene chloride (30 mL), then stirred for 1 hr. The solvents were removed at 38°/0.75 mm and the residue chromatographed over silica gel (50 g, 40-60 μm) eluting with 1-2% methanol-chloroform. The title compound was isolated as a white foam. FAB-HRMS: theory 442.1778 (M+1); meas. 442.1777.

1. customThe solvents were removed at 38°/0.75 mm
2. customthe residue chromatographed over silica gel (50 g, 40-60 μm)
3. washeluting with 1-2% methanol-chloroform