Using the Nef reaction, pyridinium salts reacted with secondary amines followed by hydrolysos creates them, as does the Rosenmund reduction that reduces an acyl halide to one.
Because of resonance stabilization of its conjugate base, the alpha- hydrogen in them is more acidic than in alkanes. Using the Nef reaction, pyridinium salts reacted with secondary amines followed by hydrolysos creates them, as does the Rosenmund reduction that reduces an acyl halide to one. They can be synthesized by reacting a primary alcohol with an oxidizing agent, and they used to be named after their corresponding alcohols. FTP, identify this functional group consisting of an atom of carbon bonded to a hydrogen atom and double-bonded with an oxygen atom, which contains a terminal carbonyl group.
Because of resonance stabilization of its conjugate base, the alpha- hydrogen in them is more acidic than in alkanes.
{Aldehyde} or {formyl} or {methanoyl}