反应详情

Azodicarboxylic dipiperidide (0.756 g, 3.0 mmol) was added at 0-5° C. to a stirred solution of tributylphosphine (0.94 ml, 786 mg, 3.0 mmol), methyl 4-hydroxyphenylacetate (332 mg, 2.0 mmol) and (E)-3-(4-bromo-phenyl)-3-phenyl-prop-2-en-1-ol (578 mg, 2.0 mmol) in dry THF (25 ml), the mixture was stirred for 1 h. The mixture was filtered and concentrated I vacuo. The residue was purified by flash chromatography on silica gel (toluene as eluent) to give 710 mg (81%) of the title compound.

1. filtrationThe mixture was filtered
2. concentrationconcentrated I vacuo
3. customThe residue was purified by flash chromatography on silica gel (toluene as eluent)