反应详情

A suspension of 89 g (0.19 mol) of [(2-amino-4-fluorophenyl)methyl]-triphenylphosphonium bromide in 1.5 L CH2Cl2 was stirred and 17 mL (0.21 mol) of acryloyl chloride was added dropwise. A 22.8 mL sample of pyridine was added dropwise. The mixture was heated under reflux for 45 min. The mixture was cooled, washed with K2CO3 solution, dilute hydrochloric acid and brine. It was dried (Na2SO4), concentrated and triturated with Et2O to give 80 g (81%) of [[4-fluoro-2-[(1-oxo-2-propenyl)amino]phenyl]methyl]triphenylphosphonium bromide as a yellowish solid: 1H NMR (CDCl3) δ 8.0-7.4 (m, 15H); 6.9 (m, 2H); 6.4 (m, 1H); 6.1 (d, 1H); 5.9 (d, 2H); 5.5 (d, 1H). ##STR18##

1. temperatureThe mixture was heated
2. temperatureunder reflux for 45 min
3. temperatureThe mixture was cooled
4. washwashed with K2CO3 solution, dilute hydrochloric acid and brine
5. dry with materialIt was dried (Na2SO4)
6. concentrationconcentrated
7. customtriturated with Et2O