has specified product has specified reactant aldehyde organolithium compound organomagnesium halide chain lengthening Bouveault aldehyde synthesis 2014-03-27T09:00:00Z RXNO RXNO:0000533 Reaction of an organomagnesium or organolithium compound with an N,N'-disubstituted formamide to yield the next homologous aldehyde. batchelorc https://www.rsc.org/Merck-Index/reaction/r57/