Abstract Aliphatic and cycloaliphatic α-hydroxylaminocarboxylic acids are smoothly decarbonylated in dilute oleum at room temperature. For example, α-hydroxyl- aminocyclohexanecarboxylic acid (II) gives a high yield of carbon monoxide and caprolactam. Other α-hydroxylaminocarboxylic acids give CO and oxime, or CO and a product that may be considered to have formed from the oxime by Beckmann ...
