Task: Text Categorization
Input (English): This functional group is produced in the second step of the Darzens condensation and can be synthesized enantioselectively using a manganese-salen complex as a catalyst or a combination of titanium tetraisopropoxide and diethyl tartrate in reactions named for Jacobsen and Sharpless. Reaction with tungsten reagents and triphenylphosphine will result in elimination to produce alkenes; in the inverse reaction, a butterfly mechanism is hypothesized this functional group's formation from the reaction of a peroxyacid with an alkene. It may also be produced from a halohydrin via an intramolecular Williamson reaction. FTP name this highly strained functional group, a three-membered cyclic ether.
Output (English): Science