反应详情

温度

-70 °C

3-Methoxyphenylacetylene [5.00 g, 0.032M, prepared by the method of E. Negishi et al, J. Org. Chem. 45 2526-8, (1980)] was dissolved in dry tetrahydrofuran (15 ml), cooled to -70° C. under nitrogen, and n-butyl lithium, 1.6M in hexane, (24.40 ml, 0.038M), added dropwise. After stirring for 0.5 h, iodohexane (8.00 g, 0.038M), dissolved in dry tetrahydrofuran, (15 ml) was added dropwise. The rection was warmed slowly to room temperature, refluxed overnight, then cooled. The solution was then quenched with water, acidified with dilute hydrochloric acid and extracted with diethyl ether (twice). The organic phases were combined, washed with water and dried, (MgSO4). Evaporation in vacuo affored 7.71 g of product as an orange oil.

1. additionwas added dropwise
2. temperatureThe rection was warmed slowly to room temperature
3. temperaturerefluxed overnight
4. temperaturecooled
5. customThe solution was then quenched with water
6. extractionextracted with diethyl ether (twice)
7. washwashed with water
8. customdried
9. customEvaporation in vacuo affored 7.71 g of product as an orange oil