These chemicals are the major product when iminium
These chemicals are the major product when iminium salts are heated, then quenched with water. One subclass of these compounds is the 5-amino-2,4-pentadienals, which can be formed by ring opening of pyridinium salts when secondary amines are substituted for primary ones in a certain reaction. Terminal z-alkenes result from the reaction of one of these compounds with a triphenyl phosphonium ylide. An alcohol and a carboxylic acid are the products in the base-catalyzed (*) disproportionation of these compounds. These reactants in the Cannizzaro reaction can be produced by the Stephen synthesis, and can be identified by the formation of a precipitate in a Tollens' test. Including the aforementioned Zincke variety, FTP, identify these compounds which contain a terminal carbon bonded to a hydrogen atom and double bonded to an oxygen atom – a terminal carbonyl group – and which can be distinguished via the silver mirror test from ketones.
These chemicals are the major product when iminium salts are heated, then quenched with water.
{aldehyde}s [prompt on {carbonyl}s]