Dehydrating this compound forms an oxazole in the Robinson-Gabriel synthesis, and zinc compounds are used to generate them from thioesters in the Fukuyama coupling. Another reaction used to generate them uses thorium oxide to
Dehydrating this compound forms an oxazole in the Robinson-Gabriel synthesis, and zinc compounds are used to generate them from thioesters in the Fukuyama coupling. Another reaction used to generate them uses thorium oxide to cyclize a dicarboxylic acid. Another method to create them uses a Lewis acid to create an acyl cloride, which undergoes an electrophilic aromatic substitution. In addition to the Ruzicka cyclization and the Friedel-Crafts reaction, these compounds can be created from secondary alcohols using the Jones reagent. They exist in an equilibrium with enols in a simple form of tautomerism. For 10 points, name these carbonyls that contain a carbon double bonded to an oxygen bound to two R groups.
Dehydrating this compound forms an oxazole in the Robinson-Gabriel synthesis, and zinc compounds are used to generate them from thioesters in the Fukuyama coupling.
 ketones