Sodium Hydroxide → (2S, 4S)-1-(t-butoxycarbonyl)-2-(N,N-dimethylcarbamoyl)-4-(4-methoxybenzylthio)pyrrolidine

Beteiligte Stoffe

Reaktionsschritte

151 mg of sodium hydroxide (as a 55% w/w dispersion in mineral oil) were added, whilst ice-cooling, to a solution of 532 mg of 4-methoxybenzyl mercaptan dissolved in 10 ml of dry dimethylformamide. The mixture was then stirred at room temperature for 30 minutes, after which 1.05 g of (2S, 4R)-1-(t-butoxycarbonyl)-2-(N,N-dimethylcarbamoyl)-4-methanesulfonyloxypyrrolidine [prepared as described in step (2) above] was added. The reaction mixture was then stirred at room temperature for 30 minutes and then at 40° C. for 6 hours. At the end of this time, it was treated and purified according to the procedure described in Preparation 1-(4), to afford 385 mg of the title compound as an oil.

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