反应详情

A solution containing P2I4 (3.42 g, 6 mmol) and 3-(1-hydroxybenzyl)thiophene (1.90 g, 10 mmol) in sodium-dried toluene (100 ml) was heated under nitrogen for one hour. The reaction mixture was cooled and then quenched with 10% aqueous sodium sulphite. The mixture was extracted with ether, and the combined organic phases were washed with water and brine then dried. Filtration and evaporation afforded a yellow oil, which on bulb-to-bulb distillation (110° C. at 0.05 mmHg) gave a pale-pink oil. Chromatography with dichloromethane gave 3-benzylthiophene as an oil (1.02 g, 53% yield); 1H nmr:delta 3.84 (2H,s), 7.0-7.2 (8H,m) ppm.

1. temperaturewas heated under nitrogen for one hour
2. temperatureThe reaction mixture was cooled
3. customquenched with 10% aqueous sodium sulphite
4. extractionThe mixture was extracted with ether
5. washthe combined organic phases were washed with water and brine
6. customthen dried
7. filtrationFiltration and evaporation
8. customafforded a yellow oil, which
9. distillationon bulb-to-bulb distillation (110° C. at 0.05 mmHg)
10. customgave a pale-pink oil