Phenylpyruvic acid → Ammonium Hydroxide

Participants

Reaction Steps

To a mixture of 1-[(S)-alanyl]octahydroindole-2(S)-carboxylic acid (prepared as described in Example 1) and phenylpyruvic acid in methanol water at a pH of about 7, at room temperature, add sodium cyanoborohydride. Upon completion of the reaction, absorb the residue on a XAD-2 resin and elute with methanol followed by further purification by elution from silica gel using chloroform:methanol: 14% ammonium hydroxide 1:1:1 to isolate the title compound.

Provenance & Evidence