Sodium Thiosulfate → Methyl 4-formylcyclohexane-1-carboxylate

Beteiligte Stoffe

Reaktionsschritte

To a solution of methyl 4-(hydroxymethyl)cyclohexanecarboxylate (Intermediate 87, 4.08 g, 23.7 mmol) in DCM was added NaHCO3 (9.95 g, 118 mmol), followed by Dess-Martin Periodinane (12.1 g, 28.4 mmol). The mixture was stirred at r.t. for 2.5 h. Et2O (60 mL) was added followed by an aq. solution of NaHCO3 (1 M, 60 mL) and a 20% aq. solution of sodium thiosulfate (40 mL). The resulting mixture was stirred overnight. The phases were separated and the aqueous phase was extracted with Et2O. The organic phase was washed with brine and dried over MgSO4, filtered and concentrated in vacuo to yield the title compound (4.0 g, 99% yield): MS (EI) m/z 170 M+.

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