phenylmethyl 1-[N-[4-(2-methyl-2-propyloxycarbonyl)piperazine-1-carbonyl]amino]cyclohexanecarboxylate → 1-[N-[4-(2-methyl-2-propyloxycarbonyl)piperazine-1-carbonyl]amino]cyclohexanecarboxylic acid

Participants

Reaction Steps

Further, 4.3 g (9.65 mmol) of the above phenylmethyl 1-[N-[4-(2-methyl-2-propyloxycarbonyl)piperazine-1-carbonyl]amino]cyclohexanecarboxylate was dissolved in 200 ml of ethanol and 400 mg of 10% palladium carbon was suspended thereinto and under air current of hydrogen stirred for 15 hours. The insoluble components were removed from the reaction mixture by filtration. The filtrate was concentrated under reduced pressure, whereby 3.25 g of the captioned 1-[N-[4-(2-methyl-2-propyloxycarbonyl)piperazine-1-carbonyl]amino]cyclohexanecarboxylic acid was obtained in a yield of 45%.

Provenance & Evidence