Formic Acid → HCID 89666883, compound

Participants

Reaction Conditions

Reaction Steps

Formic acid (2.4 ml) and 10% Pd/C (0.4 g) were added to an ethanol solution (60 ml) containing (1S,2S)-2-(dibenzylamino)-1-(2,2-dimethylcyclopropyl)propan-1-ol (2.4 g) obtained in the 5th step, followed by stirring at 90° C. for 5 hours. The reaction solution was filtered through Celite and the filtrate was distilled away under reduced pressure. Diisopropyl ethylamine (1.5 ml) and di-tert-butyl carbonate (1.75 g) were added to a THF (5 ml) solution containing the obtained residue, followed by stirring at room temperature for 40 minutes. Water and a 10% citric acid aqueous solution were added to the reaction solution, followed by extraction with ethyl acetate. The organic layers were washed with water and saturated saline and dried over anhydrous sodium sulfate. Then, the solvent was distilled away under reduced pressure and the obtained residue was purified by silica gel chromatography (n-hexane:ethyl acetate=1:0 to 1:0.2). A yellow liquid of tert-butyl ((2S)-1-(2,2-dimethylcyclopropyl)-1-hydroxypropan-2-yl)carbamate (0.45 g) was thus obtained.

Provenance & Evidence