Silver(I) Triflate-Catalyzed Direct Synthesis of N-PMP Protected α-Aminopropargylphosphonates from Terminal Alkynes

N-PMP protected α-aminopropargylphosphonates have been synthesized by using a silver(I) triflate-catalyzed one-pot three-component reaction of terminal alkynes, p-anisidine, and diethyl formylphosphonate hydrate. Good to excellent yields of the desired products may be obtained with a very simple procedure.