What is Oxidation of primary alcohols to carboxylic acids?

The oxidation of primary alcohols to carboxylic acids is an important oxidation reaction in organic chemistry.

When a primary alcohol is converted to a carboxylic acid, the terminal carbon atom increases its oxidation state by four. Oxidants able to perform this operation in complex organic molecules, featuring other oxidation-sensitive functional groups, must possess substantial selectivity. The most common oxidants are alkaline potassium permanganate or acidified potassium dichromate. Jones reagent, PCC in DMF, Heyns oxidation, ruthenium tetroxide and TEMPO are also used.