One-Pot Synthesis of Fused 2-Pyridones from Heteroarylacrylic Acid via Curtius Rearrangement and Microwave-Assisted Thermal Electrocyclization
作者:Tominari Choshi、Takashi Nishiyama、Noriyuki Hatae、Kaori Hayashi、Manami Obata、Kimiko Taninaka、Masahiro Yamane、Shota Oda、Takumi Abe、Minoru Ishikura
DOI:10.3987/com-16-s(s)13
日期:——
We investigated the one-pot synthesis of several fused 2-pyridone ring systems based on a Curtius rearrangement, followed by a microwave-assisted thermal electrocyclization of a 2-aza-6 pi-electron system including isocyanate. We synthesized seven heterocyclic compounds containing a fused 2-pyridone ring. In these results, the one-pot synthesis of fused 2-pyridone ring system 5 from (E)-acrylic acids 1 under microwave irradiation conditions was more effective than the conventional reaction conditions in terms of the yield and the reaction time.