Ni-catalyzed coupling reaction of alkynes with (Z)-3-halopropenoates depended on the halogen of halopropenoates. The reaction with (Z)-3-bromopropenoate afforded cyclopentadienes and the reaction with Q-3-iodopropenoates gave pyrones. (C) 1999 Elsevier Science Ltd. All rights reserved.
1,1-Cycloaddition of zirconacyclopentadienes to propynoates
作者:Tamotsu Takahashi、Chanjuan Xi、Martin Kotora
DOI:10.1039/a704740a
日期:——
Zinconacyclopentadienes react with propynoates in a 1,1-cycloaddition manner to give pentasubstituted cyclopentadiene derivatives in high yields.