摘要
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.
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.
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)
Shanghai Pujiang Program(No.14PJD012)
Key Projects in the National Science & Technology Pillar Program(No. 2011BAE06B05)
the Fundamental Research Funds for the Central Universities
partly supported by Australia DC Foundation