摘要:
A study was carried out on the reaction of aminopyridines with phosphorus-containing allenes. 2-Aminopyridines react to form phosphorylated pyrido-[1,2-a]-pyrimidines, while aminopyridines with monoalkylation at the exocyclic nitrogen atom form a mixture of 1,2- and 1,3-alkadienylphosphonates. A reaction mechanism was proposed.