反应详情

A 500-milliliter flask equipped with a reflux condenser, an addition funnel and a magnetic stirring bar was charged with 31.6 grams (0.1749 mole) of α-ethyl-3-nitrobenzyl alcohol and 0.4 gram tetrabutylammonium iodide in 100 milliliters of diethyl ether. To this stirred mixture was added 36.4 grams (0.4546 mole) of 50 percent aqueous sodium hydroxide solution. Exothermic heating was observed. This mixture was vigorously stirred for 50 minutes, after which was added dropwise 26.6 grams (0.21 mole) of dimethyl sulfoxide. The mixture was stirred for 18 hours, after which an additional 2.0 grams of dimethyl sulfoxide was added and stirring continued for 2 hours. To this stirred mixture, 20 milliliters of concentrated ammonium hydroxide solution was carefully added and stirring continued for 1 hour. The mixture was then transferred to a separatory funnel, diluted with 100 milliliters of diethyl ether, thoroughly shaken, and the organic phase was withdrawn. The organic phase, after washing with 50 milliliters of water, was dried over magnesium sulfate and concentrated on a rotary evaporator at 55° C., leaving an amber liquid. The amber liquid was charged to a distillation flask and distilled at a pressure of 2.0 millimeters of mercury. A main fraction (21.0 grams) was collected, said fraction having a boiling point of 112° C.-115° C. at 2.0 mm Hg pressure. This main fraction was identified by NMR spectroscopy as 1-(1-methoxyprop-1-yl)-3-nitrobenzene.

1. customA 500-milliliter flask equipped with a reflux condenser, an addition funnel and a magnetic stirring bar
2. temperatureExothermic heating
3. stirringThe mixture was stirred for 18 hours
4. stirringstirring
5. waitcontinued for 2 hours
6. stirringstirring
7. waitcontinued for 1 hour
8. customThe mixture was then transferred to a separatory funnel
9. stirringthoroughly shaken
10. customthe organic phase was withdrawn
11. washThe organic phase, after washing with 50 milliliters of water
12. dry with materialwas dried over magnesium sulfate
13. concentrationconcentrated on a rotary evaporator at 55° C.
14. customleaving an amber liquid
15. additionThe amber liquid was charged to a distillation flask
16. distillationdistilled at a pressure of 2.0 millimeters of mercury
17. customA main fraction (21.0 grams) was collected