This imine then undergoes decarboxylation.The anion that results from the decarboxylation step is then protonated. The product is shown as itsdiketo form but probably exists as an enol.Hydrolysis of the imine function gives an aldehyde and a compound having a free amino group.This amine then reacts with a second molecule of the triketo form of ninhydrin to give an imine.Proton abstraction from the neutral imine gives its conjugate base, which is a violet dye.27.9The carbon that bears the amino group of 4-aminobutanoic acid corresponds to the
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This note was uploaded on 10/03/2011 for the course CHM 2210 taught by Professor Reynolds during the Fall '01 term at University of Florida.