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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.

One alternative to this reaction uses diorganochromium and is named for Takai, while one variant is further modified by using KHMDS and is named for Still. The ability of one intermediate to interconvert is called stereochemical drift, and one modification uses a sulfur-containing compound in order to create epoxides. In addition to the Corey-Chaykovsky reaction, and ester version of this reaction was developed by Horner, Wadsworth, and Emmons, while the erythro betaine can be converted to the threo version using phenyllithium in a version named for Schlosser. The formation of an oxaphosphetane drives, FTP, this reaction which uses a phosphonium ylide to create alkenes from carbonyls, named for a German.
Output:
Science