What is the oxidation product of ascorbic acid?

Question

For example, ascorbic acid + Fe3+ ---> Fe2+ and ???

Answer 1

Under aerobic conditions, ascorbic acid (vitamin C) is oxidised to dehydroascorbic acid. The reaction is reversible and is actually catalysed by Fe3+. However, dehydroascorbic acid undergoes hydrolysis to give diketogulonic acid, and subsequently a series of oxidations to give three molecules of oxalic acid.

Incidentally, under anaerobic conditions, ascorbic acid undergoes a series of dehydration and hydrolysis steps to give furfural and carbon dioxide.

Answer 2

See below for full explanation.

http://www.madsci.org/posts/archives/dec99/944415476.Ch.r.html