An enol is a type of organic compound that contains a hydroxyl group (-OH) directly attached to a carbon atom that is also part of a carbon-carbon double bond (C=C). This structure is important in various chemical reactions, particularly in the context of keto-enol tautomerism, where enols can interconvert with their corresponding keto forms. Enols are often found in the chemistry of aldehydes and ketones, where they play a role in reactions such as aldol condensation. Their unique structure allows them to participate in various chemical processes, making them significant in organic synthesis and biochemistry.