Reaktion #57030

Reaktionsgleichung

8-(2-Benzyloxy-ethyl)-1,4-dioxa-spiro[4.5]decane

H2O

TsOH

→

4-(2-benzyloxy-ethyl)-cyclohexanone

Ausbeute 97.0%

Lösungsmittel

acetone

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeAfter a standard aqueous work-up the material was purified by chromatography on SiO2

Vorschrift

8-(2-Benzyloxy-ethyl)-1,4-dioxa-spiro[4.5]decane (Intermediate R1, 1.02 g, 3.70 mmol) (obtainable as described in the publication by 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%).

Quelle