反应详情

温度

110 °C

A mixture of 57.0 g (0.300 mole) of 5-bromo-2-furoic acid, 119.0 g (0.450 mole) of 9,12,15-octadecatrienol, and 84 g (0.750 mole) of potassium tert-butoxide in dry toluene is stirred with heating. The tert-butanol formed in the reaction is allowed to distill off, and the mixture is refluxed at 110° C. with stirring for 48 hours. The mixture is allowed to cool, then is acidified with acetic acid and diluted with ice-water. The toluene organic layer is separated, washed with water, then extracted three times with 5% sodium bicarbonate solution. The combined aqueous extracts are cooled and acidified with 10% HCl solution to give 5-(9,12,15-octadecatrien-1-yloxy)-2-furoic acid.

1. temperaturewith heating
2. distillationto distill off
3. stirringwith stirring for 48 hours
4. temperatureto cool
5. additiondiluted with ice-water
6. customThe toluene organic layer is separated
7. washwashed with water
8. extractionextracted three times with 5% sodium bicarbonate solution
9. temperatureThe combined aqueous extracts are cooled