Illustrated Glossary of Organic Chemistry

Pyridinium chlorochromate (PCC): A reagent for chemoselective alcohol oxidation.

Molecular structure of pyridinium chlorochromate. It is a salt of the pyridinium cation and chlorochromate anion.

Pyridinium chlorochromate oxidizes a secondary alcohol (such as 2-propanol) to a ketone (in this case acetone).

Pyridinium chlorochromate oxidizes a primary alcohol to an aldehyde. Unlike Jones reagent (which is aqueous and strongly acidic), PCC (which is anhydrous) does not further oxidize the aldehyde to a carboxylic acid.