AbstractAn efficient base catalyzed oxacyclization of Z‐enynols has been developed under transition metal‐free reaction conditions, thus resulting in a variety of new di‐, tri‐, and tetra‐substituted furans. This approach allowed us to obtain 32 new compounds. Furthermore, DFT calculations were realized to depict a relationship between the natural population analysis and experimental results with alkyl or aryl groups for the synthesis of 2‐benzylfuran. A one‐pot Sonogashira/oxacyclization approach offers a flexible, robust and efficient alternative to base catalyzed cyclization is also carried out.
KENDE, ANDREW S.;KAWAMURA, KUNIAKI;ORWAT, MICHAEL J., TETRAHEDRON LETT., 30,(1989) N3, C. 5821-5824
作者:KENDE, ANDREW S.、KAWAMURA, KUNIAKI、ORWAT, MICHAEL J.