反应详情

Methyl triphenylphosphonium iodide (1.57 g, 3.88 mmol) was dissolved in 25 mL ether in a 50 mL round-bottomed flask at 0° C. under dry nitrogen. To the mixture was added in one portion potassium tert-butoxide (0.47 g, 4.16 mmol) and it was stirred for 10 min at room temperature. 2-(isopropylsulfanyl)benzenecarbaldehyde (0.50 g, 2.77 mmol) was added in one portion at 0° C. and the reaction mixture was stirred for additional 24 h at room temperature. The mixture was added to 50 mL of saturated sodium bicarbonate solution, and then was extracted with 3×50 mL portions of ether. The extracts were dried with magnesium sulfate and evaporated. The light yellow oil of the crude product was further purified by chromatography on silica gel using 95:5 petroleum ether 60-80 and ether as eluent to give a colorless oil (0.40 g, 81%).

1. stirringthe reaction mixture was stirred for additional 24 h at room temperature
2. extractionwas extracted with 3×50 mL portions of ether
3. dry with materialThe extracts were dried with magnesium sulfate
4. customevaporated
5. customThe light yellow oil of the crude product was further purified by chromatography on silica gel using 95:5 petroleum ether 60-80 and ether as eluent