Lithium hydroxide, monohydrate → 1-(1-Methyl-cyclopropanecarbonyl)-piperidine-4-carboxylic acid

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Reaction Steps

To a stirred solution of 26.09 g (0.109 mol) 1-(1-methyl-cyclopropanecarbonyl)-piperidine-4-carboxylic acid ethyl ester in 500 mL THF, EtOH, water (1/1/1) was added 6.86 g (0.163 mol) LiOH.H2O. After 1 h at room temperature, the solvents were evaporated and the residue taken up in DCM and the organic phase was washed with aqueous HCl 1M. The organic phases were dried over Na2SO4 and evaporated under vacuum to give 19.8 g (86%) of the title compound as a white solid. MS (m/e): 212.1 [(M+H)+].

Provenance & Evidence