Sodium Methoxide → HCID 68470880, compound

Participants

Reaction Steps

To a solution of (1R,2S,3S)-2-carbomethoxy-3-benzyltropane (5.6 g, 20.5 mmol) in absolute methanol (100 ml) was added a solution of sodium methanolate in methanol (2M, 2 ml) and the mixture was refluxed for 16 hours. The reaction mixture was concentrated in vacuo and the remanescens was dissolved in diethyl ether and was washed with water. The organic phase was dried and concentrated in vacuo. The crude product was purified by column chromatography using a mixture of diethyl ether and pentane (1+1)+1% triethyl amine as eluent yielding (1R,2R,3S)-2-carbomethoxy-3-benzyltropane as an oil. By dissolution of this product in diethyl ether and subsequent addition of a solution of hydrochloric acid in diethyl ether the title compound precipitates as white crystals, m.p. 188°-190° C.

Provenance & Evidence