反应详情

A solution of 65.8 g acetic acid 3-(4-tert-butyl-phenyl)-2-methyl-propenyl ester in 200 ml of THF was cooled to −70° C. A solution of 42.3 g potassium-tert-butoxide in 200 ml of THF was added at −70° C. during 20 min. and the resulting reaction mixture was stirred for 90 min. at the same temperature. 53.5 g 3-phenyl-propionyl chloride was dropped in and the reaction mixture was stirred for another 3 hours at −70° C. Then the reaction mixture was diluted with ether, washed with saturated NaHCO3 and brine. The organic phase was dried, filtered and evaporated to dryness. The residue was thin-layer distilled to yield 75.0 g of a yellow oil.

1. customthe resulting reaction mixture
2. stirringwas stirred for another 3 hours at −70° C
3. washwashed with saturated NaHCO3 and brine
4. customThe organic phase was dried
5. filtrationfiltered
6. customevaporated to dryness
7. distillationdistilled