The Barton reaction refers to one of several organic-chemical reactions named after Sir Derek Barton. It may be: the Barton nitrite ester reaction, forming a remote oxime from an alcohol the Barton–McCombie deoxygenation, defunctionalizing an alcohol the related Barton decarboxylation, converting a carboxylic acid or ester to the homologous alkane the Barton–Kellogg reaction, combining a diazo compound and a thioketone into an episulfide