反应详情

A suspension of 127 g (0.7 mol) of 6-chloro-2-tetralone, 70.0 g (0.7 mol) of 3,3-dimethylacrylamide, 63.6 ml (0.42 mol) of tetramethoxysilane and 85.3 g (0.56 mol) of cesium fluoride in 400 ml of toluene is boiled under reflux for 18 hours. Distillation of the solvent in a vacuum, extraction with methylene chloride/water, chromatography on silica gel with ethyl acetate/hexane (1:1) and recrystallization from methylene chloride/hexane yields 8-chloro-1,1-dimethyl-1,2,5,6-tetrahydrobenzo[f]-quinolin-3-one as white crystals with melting point 213°.

1. temperatureunder reflux for 18 hours
2. distillationDistillation of the solvent
3. extractionin a vacuum, extraction with methylene chloride/water, chromatography on silica gel
4. customwith ethyl acetate/hexane (1:1) and recrystallization from methylene chloride/hexane