Base-Induced Addition-Elimination Reactions of Electron-Deficient Vinylarenes Containing a Carbonyl or Ester Group Utilizing 4-Phenyl-3<i>H</i>-1,2,4-triazole-3,5(4<i>H</i>)-dione(PTAD)
作者:Kazuyoshi Seguchi、Satoko Tanaka
DOI:10.1246/bcsj.64.3188
日期:1991.10
The reaction of electron-deficient vinylarenes such as styrylketones and cinnamate with PTAD afforded double Diels–Alder products and Diels–Alder ene products; the latter underwent novel base-induced elimination of 4-phenyl-1,2,4-triazolidine-3,5-dione via a stable carbanion.
缺电子乙烯基芳烃如苯乙烯酮和肉桂酸酯与PTAD反应得到双Diels-Alder产物和Diels-Alder ene产物;后者通过稳定的碳负离子经历了新的碱诱导消除 4-苯基-1,2,4-三唑烷-3,5-二酮。