Zirconium Catalyzed or Mediated Regioselective C–C Bond Formation Reactions of α,β-Unsaturated Acetals
作者:Tamotsu Takahashi、Denis Y. Kondakov、Noriyuki Suzuki
DOI:10.1246/cl.1994.259
日期:1994.2
were easily prepared in situ from alkynes, reacted with acrolein diethylacetal to afford vinyl ether derivatives. The C–C bond formation proceeded exclusively at β-position of the α,β-unsaturated acetal. Zirconium catalyzed C–C bond formation reactions of α,β-unsaturated acetals with EtMgBr also proceeded at β-position exclusively.
锆-炔配合物或锆环戊烯很容易从炔原位制备,与丙烯醛二乙缩醛反应得到乙烯基醚衍生物。C-C 键的形成仅在 α,β-不饱和缩醛的 β 位进行。锆催化的α,β-不饱和缩醛与EtMgBr 的C-C 键形成反应也仅在β-位进行。