Ethyl bromodifluoroacetate → tert-Butyl 4-((2-bromo-2,2-difluoroacetamido)methyl)-4-hydroxypiperidine-1-carboxylate

関与物質

反応条件

反応手順

A solution of tert-butyl 4-(aminomethyl)-4-hydroxypiperidine-1-carboxylate (1.702 g) in DMF (20 mL) at 20° C. was treated with ethyl 2-bromo-2,2-difluoroacetate (1.5 g) and the mixture stirred for 90 minutes at 20° C. under nitrogen. The mixture was partitioned between ethyl acetate and brine, the organic layer was washed twice with brine, dried over sodium sulphate, filtered and the solvent evaporated under reduced pressure to afford the subtitled compound. Yield 2.5 g.

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