Abstract
A practical and efficient regio- and stereoselective hydrophosphorylation of propiolates, as well as a multicomponent reaction incorporating an aldehyde component, is reported. Both processes proceed with atom economy in very straightforward experimental procedures. The reactions are catalyzed by DABCO (1,4-diazabicyclo[2.2.2]octane) and use readily available H-phosphonates as the phosphorylating agent.