Water → tert-butyl 4-((2-((benzyloxy)carbonyl)hydrazino)carbonyl)-4-((6-((1-tert-butyl-1H-pyrazol-5-yl)amino)pyridin-2-yl)methyl)piperidine-1-carboxylate

Participants

Reaction Steps

To a solution of 535 mg of 1-(tert-butoxycarbonyl)-4-((6-((1-tert-butyl-1H-pyrazol-5-yl)amino)pyridin-2-yl)methyl)piperidine-4-carboxylic acid in 10 ml of chloroform were added 214 mg of benzyl carbazate and 291 mg of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride at room temperature, followed by stirring the reaction mixture at room temperature for 2 hours. The reaction mixture was poured into water, and extracted with chloroform. The chloroform solution was dried over magnesium sulfate, and filtered. The filtrate was concentrated in vacuo. The resulting residue was purified by a silica gel column chromatography (eluent: hexane to hexane/ethyl acetate=10/1) to give the title compound as a pale brown solid.

Provenance & Evidence