Bromine in methanol and dilute sulfuric acid are used to convert the alcohol of this compound to a dihydropyran in the Achmatowicz reaction.
Bromine in methanol and dilute sulfuric acid are used to convert the alcohol of this compound to a dihydropyran in the Achmatowicz reaction. An "interrupted" modification of one reaction that produces this compound involves quinine in the presence of a proton sponge, and that reaction is catalyzed by amines and involves alpha-halogen ketones and beta-dicarbonyl compounds and is the Feist-Benary synthesis. 1,4-diketones are reacted with phosphorus pentoxide to produce these in Paal-Knorr synthesis, and these compounds are hydrogenated with a palladium catalyst to produce the "tetrahydro" variety of ether. Analogous to thiophene and pyrrhole, for 10 points, name this aromatic compound with a five-element ring containing one oxygen atom.
Bromine in methanol and dilute sulfuric acid are used to convert the alcohol of this compound to a dihydropyran in the Achmatowicz reaction.
{furan}