Hydrochloric Acid → 3-Cyclopropyl-1-[4-(methylsulphenyl)-phenyl]-propan-1,3-dione

関与物質

反応条件

反応手順

Cyclopropyl methyl ketone (0.84 g) was added to a suspension of sodium hydride (80%, 0.3 g) in dioxane. The mixture was stirred for 20 minutes and ethyl 4-(methylsulphenyl)benzoate (1.0 g) was added. The mixture was stirred and heated at 45° C. for 1.5 hours and at 60° C. for 2 hours. It was left to stand at room temperature overnight. Hydrochloric acid (2M) was added and the mixture was extracted with ethyl acetate, washed with water, dried (MgSO4) and filtered. The flitrate was evaporated to dryness and the residue was purified by chromatography eluted with a mixture of ethyl acetate and hexane to give 3-cyclopropyl-1-[4-(methylsulphenyl)-phenyl]-propan-1,3-dione (0.59 g) as an orange solid, NMR (CDCl3) 1.0(m,2H), 1.2(m,2H), 1.8(m, 1H), 2.5(s,3H), 6.25(s,1H), 7.25(d,2H), 7.8(d,2H), 16.35(bs,1H).

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