基金financial supported by National Natural Science Foundation of China(No.21372079)National High Technology Research Development Program of China(863 Program,No. 2011AA10A207)+3 种基金Shanghai Pujiang Program(No.14PJD012)Key Projects in the National Science & Technology Pillar Program(No. 2011BAE06B05)the Fundamental Research Funds for the Central Universitiespartly supported by Australia DC Foundation
文摘An efficient synthetic pathway to 2-oxo-1,2-dihydropyridine-fused 1,3-diaza heterocycles from heterocyclic ketene aminals,phathalic anhydride and ethyl cyanacetate was established.This protocol involved aza-ene reaction/imine-enamine tautomerization/enamine-ester exchange/ring-opening reaction sequence.