反应详情

A mixture of 2-(2-chloro-6-fluorophenyl)propan-2-ol (19.0 g), concentrated sulphuric acid and water was heated at reflux for 2 hours. It was cooled and extracted with ether, washed with water, dried (MgSO4) and filtered. The filtrate was evaporated to dryness and the residue was purified by chromatography eluted with hexane to give 2-(2-chloro-6-fluorophenyl)-propene (11.6 g) as a dear oil, NMR (CDCl3) 1.95(s,3H) 4.95(s,1H), 5.85(s,1H), 6.85-7.0(m,1H), 7.05-7.2(m,2H).

1. temperaturewas heated
2. temperatureat reflux for 2 hours
3. temperatureIt was cooled
4. extractionextracted with ether
5. washwashed with water
6. dry with materialdried (MgSO4)
7. filtrationfiltered
8. customThe filtrate was evaporated to dryness
9. customthe residue was purified by chromatography
10. washeluted with hexane