Synthetic and mechanistic studies of the multicomponent reaction of 2‑(phenylethynyl)benzaldehyde, primary amine and diphenylphosphine oxide†

New multicomponent methods were developed for the selective synthesis of phosphinoyl functionalized N -(2-(phenylethynyl)benzyl)amine, 1,2-dihydroisoquinoline and 2 H -isoindoline.