Synthesis of novel piperidyl spirofused benzofurans/benzopyrans by radical cyclization
作者:Zilong Tang、Joelle Mayrargue、Mouad Alami
DOI:10.1002/jhet.630
日期:2011.11
Several new piperidylspirofusedbenzofurans and piperidylspirofusedbenzopyrans were synthesized via an intramolecular radicalcyclization as the key step. It was found that the yield of the formation of five‐member ring was much higher than that of six‐member ring. In addition, the substituent attached to the benzene ring had almost no effect on the cyclization. J. Heterocyclic Chem.,(2011).