The development of a novel 3-center 2-component annulation reaction between α, ω- carbamoylaldehydes and suitably monoalkylated phosphinic acids is reported. Depending on the starting α, ω-carbamoylaldehyde, diverse phosphinic scaffolds varying in the size of their rigidity element, the nature and stereochemistry of substituents, and the participation of heteroatoms in the azacyclic ring system can be obtained in one synthetic step and in high ...