Synthesis of furano[2,3-c]-pyran-3-one and thieno[2,3-c]-pyran-3-one derivatives through the coupling of 3-alkynyl-2-heteroaromatic carboxaldehydes with Fischer carbene complexes
作者:Yanshi Zhang、James W Herndon
DOI:10.1016/s0040-4039(00)02123-7
日期:2001.1
The coupling of Fischercarbenecomplexes with 3-alkynyl-2-heteroaromatic carboxaldehyde derivatives has been examined. The reaction affords pyrones fused to furans or thiophenes in a single step. The compounds are stable enough for isolation. If the carbenecomplex features a remote alkene substituent, a subsequent Diels–Alderreaction can occur.
Synthesis of Furano[2,3-<i>c</i>]pyran-3-one and Thieno[2,3-<i>c</i>]pyran-3-one Derivatives through the Coupling of 3-Alkynyl-2-heteroaromatic Carboxaldehydes with Fischer Carbene Complexes: Total Synthesis of a <i>Baccharis</i>-Derived Cadinene Derivative
作者:Yanshi Zhang、James W. Herndon
DOI:10.1021/jo011136y
日期:2002.6.1
The coupling of Fischercarbenecomplexes with 3-alkynyl-2-heteroaromatic carboxaldehyde derivatives has been examined. The reaction affords pyrones fused to furans or thiophenes in a single step. The compounds are stable enough for isolation. If the carbenecomplex features a remote alkene substituent, a subsequent Diels-Alderreaction can occur. This reaction has been used as the key step in the