Ligand-Controlled Intramolecular Carbonylative Cyclization of 1,1-Diethynyl Acetates: New Entry to the Functionalized 4-Cyclopentene-1,3-diones
作者:Keisuke Kato、Hiroyuki Akita、Ryuhei Teraguchi、Shigeo Yamamura、Tomoyuki Mochida、Tat’yana Peganova、Nikolai Vologdin、Oleg Gusev
DOI:10.1055/s-2007-967944
日期:——
The carbonylative cyclization of 1,1-diethynyl acetates mediated by Phbox/Pd(TFA)2 afforded a functionalized 4-cyclopentene-1,3-dione as a major product. In the absence of box ligand, a methoxycarbonylated orthoester was obtained predominantly.
在 Phbox/Pd(TFA)2 的介导下,1,1-二炔基乙酸酯发生羰基化环化反应,主要产物为官能化的 4-环戊烯-1,3-二酮。在没有盒配体的情况下,主要得到甲氧基羰基化的原酯。