反应详情

A mixture of 1-(4-benzyloxy-phenyl)-hexan-2-one (40.36 mmol, 11.4 g), oxo-acetic acid ethyl ester solution in toluene (30 mL, 50% solution in toluene) and triethylamine (15 mL) was stirred at ambient temperature for 16 h. The reaction mixture was diluted with DCM (300 mL), washed with water (3×100 mL), and the organic layer was dried and concentrated under reduced pressure. The resultant residue was purified by flash silica gel chromatography eluting with 30% ethyl acetate in hexanes to provide 3-(4-benzyloxy-phenyl)-2-hydroxy-4-oxo-octanoic acid ethyl ester.

1. washwashed with water (3×100 mL)
2. customthe organic layer was dried
3. concentrationconcentrated under reduced pressure
4. customThe resultant residue was purified by flash silica gel chromatography
5. washeluting with 30% ethyl acetate in hexanes