Task: Text Categorization
Input (English): A triply eponymous reaction of this type uses aluminum alkoxide as a catalyst. A ketone undergoes this reaction enantioselectively in the presence of borane and a chiral oxazaborolidine catalyst. In a modification of another reaction of this type, carbonyl compounds, hydrazine hydrate, and a base are heated with diethylene glycol and, once hydrazone formation is complete, the temperature is raised to 200  C to drive off excess water and hydrazine hydrate. That reaction of this type is the base-promoted transformation of carbonyl compounds into corresponding hydrocarbons through the decomposition of hydrazone intermediates. Yet another reaction of this type transforms carbonyl groups to methylene groups with zinc amalgam and hydrochloric acid. Those mentioned reactions include Meerweein- Ponndorf-Verley, Corey-Bakshi-Shibata, Wolff-Kishner, and Clemmensen. For 10 points, identify this type of chemical reaction that is contrasted with oxidation.
Output (English): Science