反应详情

温度

75 °C

169 Mg. (1.5 mm) of potassium t-butoxide was dissolved in 2 ml. of DMSO and treated with 651 mg. (1.5 mm) of p-methylthiobenzyltriphenylphosphonium chloride dissolved in 1 ml. of DMSO. To this solution was added 270 mg. (1.65 mm) of 5-fluoro-2-methyl-1-indanone in 2 ml. of DMSO. The solution was heated at 75°C for 15.5 hours. Benzene and water were added and the benzene layer was washed five times with water. The benzene layer was dried over Na2SO4 and evaporated to dryness under vacuum. The weight was 915.6 mg. This material was eluted through 8 g. of silica gel with benzene to remove triphenylphosphine oxide. The eluate weighed 372 mg. after removal of solvent. This was rechromatographed through 15 g. of silica gel using hexane and 95.9 mg. of 5-fluoro-2-methyl-1-(p-methylthiobenzylidene)-indane was isolated, melting point 67° to 70°C.

1. additionTo this solution was added 270 mg
2. washthe benzene layer was washed five times with water
3. dry with materialThe benzene layer was dried over Na2SO4
4. customevaporated to dryness under vacuum
5. washThis material was eluted through 8 g
6. customof silica gel with benzene to remove triphenylphosphine oxide
7. customafter removal of solvent
8. customThis was rechromatographed through 15 g