Acetic Anhydride → HCID 13335393, 화합물
반응식
[CH2:1]([CH:4]1[C:8]([OH:10])([CH3:9])[CH:7]=[CH:6][C:5]1=[O:11])[CH:2]=[CH2:3].[C:12](OC(=O)C)(=[O:14])[CH3:13]>C1(C)C=CC(S(O)(=O)=O)=CC=1>[C:12]([O:10][C:8]1([CH3:9])[CH:7]=[CH:6][C:5](=[O:11])[CH:4]1[CH2:1][CH:2]=[CH2:3])(=[O:14])[CH3:13]참가 물질
4
실험 절차
lnto a flask equipped with a stirrer and a thermometer, dl-2-allyl-3-hydroxy-3-methyl-4-cyclopentenone (152 g), p-toluenesulfonic acid (1 g) and acetic anhydride (320 g) were charged, and the resultant mixture was stirred at 100° C. for 2 hours. After completion of the reaction, acetic anhydride was removed under reduced pressure, and the residue was extracted with toluene. The toluene layer was washed with 1% sodium bicarbonate solution and water in order. Toluene was removed from the toluene layer to give dl-3-acetoxy-2-allyl-3-methyl-4-cyclopentenone (186 g). Yield, 96%. B.P., 72°-75° C./0.2-0.3 mmHg.