What is the chemical reaction involved in the reaction of amines and ninhydrin?

Question

What is the chemical reaction involved in the reaction of amines and ninhydrin?

Answer 1

Thin Layer Chromatography (TLC)?

Haven't done a organic chemistry lab in a long time, memory is hazy

one of the previous post probably answered your question. I've attached the name of post and its URL.

Which buffer solution to use for Ninhydrin in a pepsin-mediated (acids added) digestion experiment?

http://in.answers.yahoo.com/question/ind...

Answer 2

The chemical reaction involved with primary amines and ninhydrin is actually a several step process. The ultimate product is called Ruhemanns Blue - it is a deep blue dye that is the result of a diamerization of ninhydrin that are connected by an imine. The complex is fully conjugated and therefore, highly colored. See the link below for a full description of the chemistry that is involved...