反应详情

0.5 G. of 2-(5-oxo-5H-dibenzo[a,d]cyclohepten-2-yl)propionyl chloride is dissolved in 25 ml. of acetonitrile containing 0.5 ml. of allyl alcohol and 0.5 ml. of triethylamine. After 16 hours the mixture is evaporated to dryness and partitioned between ethyl acetate and water. The organic solution is washed, dried, passed through a short (10 g.) silica gel column, then evaporated to give allyl 2-(5-oxo-5H-dibenzo[a,d]cyclohepten-2-yl)propionate as an oil [nmr spectrum in deuterochloroform relative to tetramethylsilane: 1.54 (doublet, CH3), 2.84 (quartet, CH), 4.55 (doublet, OCH2), 5.1-6.0 (multiplet, CH=CH2) and 7.00 ppm (singlet, 10, 11-H); mass spectrum: 318(M+) 233,205].

1. customAfter 16 hours the mixture is evaporated to dryness
2. custompartitioned between ethyl acetate and water
3. washThe organic solution is washed
4. customdried
5. customevaporated