反应详情

Triethylsilane (30 mL) and trifluoroacetic acid (12 mL) were added to a solution of N-carbobenzyloxy-3-(N-carbobenzyloxy-3-fluoroanilin-4-yl)-3-hydroxyazetidine (Example 81, Step 3, 4.3 g, 9.55 mmol) in methylene chloride (40 mL) and stirred for 2 days. Removal of the solvents at 45/0.75 mm gave an amber oil. Chromatography over silica gel (150 g, 40-60 μm) eluting with 1-3% methanol-chloroform yielded the title compound as a solid, m.p. 95°.

1. customRemoval of the solvents at 45/0.75 mm
2. customgave an amber oil
3. washChromatography over silica gel (150 g, 40-60 μm) eluting with 1-3% methanol-chloroform