All at once: Microwave irradiation of a metal‐free mixture of propargyl enolethers and primary amines generates substituted alkyl 1,2‐dihydropyridine‐3‐carboxylates in excellent yields through a domino process (see scheme). The obtained 1,2‐dihydropyridines feature four possible diversity points and a chemical handle for complexity‐diversity generation (carboxylic ester at the C3 position).
microwave-assisted diversity-oriented domino synthesis of functionalized alkyl nicotinates from propargyl vinylethers is described. The domino manifold comprises a complex network of reactions involving at least five distinct chemical steps. The obtained alkyl nicotinates incorporate two diversity points at the ring and one ester functionality as convenient handles for further elaboration.