Task: Text Categorization
Input (English): A disproportionation reaction using this type of compounds in the presence of alcoxides to yield esters is named for Tischenko, while another type can be formed by reacting a secondary amine with a pyridinium salt. In the presence of a strong base, two equivalents of these yield an alcohol and a carboxylic acid in the Cannizzaro reaction. They can be reduced to primary alcohols, and they react with a set of alkyl ammonium compounds to form a silver mirror in the Tollens test. For 10 points, identify these compounds which feature a carbon double bonded to an oxygen and single bonded to an alkyl group and a hydrogen, exemplified by etha-nal and propa-nal.
Output (English): Science