Q: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
In the presence of ethanol and sodium, these compounds can be reduced to primary alcohols in a reaction named after Bouveault and Blanc. The heterocyclic amine of DMAP attacks the less-hindered carbonyl of an anhydride to form an intermediate that reacts with alcohol to produce one of these in one reaction. A reaction that forms another type of these compounds is reacts a ketone with a peroxyacid. Both of those reactions, the (*) Yamaguchi and BaeyerVilliger reactions, can synthesize the cyclic version of these compounds, which are called lactones. They can be synthesized in by heating carboxylic acids with alcohols in the presence of an acid catalyst. For 10 points, name this functional group which has a carbon single-bonded to one oxygen and double bonded to another, commonly created in a reaction named for Fischer.
A:
Science