Triethylamine → 1-(tert-Butoxycarbonyl)-4-(methanesulfonyloxy)piperidine

Participants

Reaction Steps

To tert-butyl 4-hydroxypiperidine-1-carboxylate (1 eq) in methylene chloride and triethyl amine (1.4 eq) at 0° C. was added methane sulfonyl chloride (1.4 eq) drop-wise. The reaction was brought to ambient temperature and was stirred for 1 h. The reaction mixture was washed with water and saturated sodium chloride solution. The organic layer was then dried with sodium sulfate and concentrated to yield tert-butyl-4-(methylsulfonyloxy)piperidine-1-carboxylate in quantitative yield. The product was confirmed by 1H NMR, and used without further purification.

Provenance & Evidence