反应详情

温度

0 °C

Diisopropyl azodicarboxylate (0.70 mL, 3.55 mmol) was added dropwise to a stirred solution of 4-(2-hydroxy-phenyl)-piperazine-1-carboxylic acid benzyl ester (0.74 g, 2.4 mmol), 4-hydroxy-piperidine-1-carboxylic acid tert-butyl ester (0.48 g, 2.4 mmol) and triphenylphosphine (0.93 g, 3.6 mmol) in THF (25 mL) cooled to 0° C. The resulting solution was warmed to r.t. and stirred for about 16 hours. The solvent was removed in vacuo and the residue purified by silica gel chromatography (20% ethyl acetate in hexanes) to afford the final compound (0.50 g, 43%) as a clear oil.

1. temperatureThe resulting solution was warmed to r.t.
2. customThe solvent was removed in vacuo
3. customthe residue purified by silica gel chromatography (20% ethyl acetate in hexanes)