Water → 4-(2-Benzyloxyethyl)cyclohexanone

反応式

[CH2:1]([O:8][CH2:9][CH2:10][CH:11]1[CH2:20][CH2:19][C:14]2(OCC[O:15]2)[CH2:13][CH2:12]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.O.CC1C=CC(S(O)(=O)=O)=CC=1>CC(C)=O>[CH2:1]([O:8][CH2:9][CH2:10][CH:11]1[CH2:12][CH2:13][C:14](=[O:15])[CH2:19][CH2:20]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

参加物

実験手順

8-(2-Benzyloxy-ethyl)-1,4-dioxa-spiro[4.5]decane (Intermediate K1, 1.02 g, 3.70 mmol) (prepared in accordance with the publication Ciufolini et. al. J. Amer. Chem. Soc. 1991, 113, 8016, incorporated herein by reference) was dissolved in acetone (100 mL): H2O (5 mL) and reacted with TsOH (140 mg, 0.74 mmol) at 45° C. for 5 h. After a standard aqueous work-up the material was purified by chromatography on SiO2 to give 4-(2-benzyloxy-ethyl)-cyclohexanone as a colorless oil (97%).