反应详情

The water layer was made acidic with sulfuric acid and extracted with toluene (80 g) two times. The toluene layer was washed and evaporated, and the residue was distilled under reduced pressure to give trans-chrysanthemic acid (47.1 g; trans-isomer, 80.5 %). B.P. 110° to 114°C/2 mmHg.

1. extractionextracted with toluene (80 g) two times
2. washThe toluene layer was washed
3. customevaporated
4. distillationthe residue was distilled under reduced pressure