反应详情

A solution of 3'-bromopropiophenone (25 g) and triethylsilane (57 ml) in trifluoroacetic acid (50ml) was heated at reflux for 16 hours. The reaction mixture was evaporated under reduced pressure and the residue was purified by chromatography eluting with isohexane. Yield 25.14 g. The subtitle compound was contaminated with 17 mole % of 3-(1-propenyl)bromobenzene. Used directly in the next step. 1H NMR: δ(CDCl3) 7.32(m,2H), 7.10(m,2H), 2.55(t,2H), 1.61(m,2H), 0.90(t3H).

1. temperatureat reflux for 16 hours
2. customThe reaction mixture was evaporated under reduced pressure
3. customthe residue was purified by chromatography
4. washeluting with isohexane