反应详情

40 g (131 mmol) of 5,5,8,8-tetramethyl-4-(2-ethoxyethoxy)-5,6,7,8-tetrahydronaphthalene-2-carbaldehyde are dissolved in 400 mL of THF. 290 mL (145 mmol) of 0.5N ethynylmagnesium bromide solution are added and the reaction medium is then stirred for 1 hour. After treatment with 1N hydrochloric acid solution and extraction with ethyl acetate, followed by evaporation, the residue is purified by chromatography on a column of silica (eluent: 8/2 heptane/EtOAC). A yellow oil is obtained (m=42 g; yield=97%).

1. extractionAfter treatment with 1N hydrochloric acid solution and extraction with ethyl acetate
2. customfollowed by evaporation
3. customthe residue is purified by chromatography on a column of silica (eluent: 8/2 heptane/EtOAC)
4. customA yellow oil is obtained (m=42 g; yield=97%)