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Synthesis of furo[3,2‐ c ]‐ and pyrano[3,2‐ c ]quinolines by lanthanide triflate catalyzed imino‐Diels‐Alder reaction
Author(s) -
Yun Ma,
ChemgTao Qian,
MeiHua Xie,
Jie Sun
Publication year - 2000
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20000180322
Subject(s) - chemistry , trifluoromethanesulfonate , yield (engineering) , catalysis , pyran , diels–alder reaction , medicinal chemistry , lanthanide , ytterbium , organic chemistry , ion , materials science , physics , optoelectronics , doping , metallurgy
Imino Diels‐Alder reaction of imines with 2,3‐dihydrofuran or 3,4‐dihydro‐2 H ‐pyran proceeded smoothly in the presence of a catalytic amount (0.5 mol %) of ytterbium triflate to afford furo[3,2‐ c ]‐ and pyrano[3,2‐ c ] quinolines conveniently in high yield.