5-Methoxytetralone → 5-Methoxy-1,2,3,4-tetrahydro-1-naphthol

Beteiligte Stoffe

Reaktionsschritte

To a solution of 5-methoxy-3,4-dihydro-2H-naphthalen-1-one (CAS#33892-75-0, 10 g, 5.67 mmol) in methanol (40 mL) and dichloromethane (5 mL) at 0° C. is added sodium borohydride (0.579 g, 8.51 mmol) in one portion. The cooling bath is removed and after 1.5 hours, the mixture is poured into water (75 mL) and the volatile organics are removed in vacuo. Extraction with dichloromethane, drying over sodium sulfate, filtering through a cotton plug and concentration affords 5-methoxy-1,2,3,4-tetrahydro-naphthalen-1-ol, which is used in the next step without further purification.

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