Synthesis of 6-functionalized tricyclodecadienones using Barton's radical decarboxylation reaction. Generation of tricyclo[5.2.1.02,6]decatrienone, a norbornene annulated cyclopentadienone
作者:Jie Zhu、Antonius J.H Klunder、Binne Zwanenburg
DOI:10.1016/0040-4020(95)98707-o
日期:1995.4
from carboxylic acid has been accomplished whereby the chemical scope of the tricyclodecadienone system as a synthetic equivalent of cyclopentadienone has been expanded. Bridgehead bromide gives upon treatment with base access to norborneneannulatedcyclopentadienone which rapidly undergoes either regioselective nucleophilic addition or Diels-Alder cyclization depending on the applied reaction conditions
4-Oxo-2-cyclopentenyl acetate has been shown to behave as a conjunctive reagent for TandemDiels-AlderReaction under aluminum chloride catalysis. This methodology represents a mild and convenient elaboration of hydrofluorenones. Structure analysis of the reaction products by NMR spectroscopy is discussed.
Generation and characterization of tricyclodecatrienone, a norbornene annulated cyclopentadienone
作者:Jie Zhu、Antonius J.H. Klunder、Binne Zwanenburg
DOI:10.1016/s0040-4039(00)73697-5
日期:1993.5
An effective synthesis of endo-6-bromo-tricyclo[5.2.1.02,6]deca-4,8-dien-3-one is realized starting from carboxylic acid applying Barton's halodecarboxylation methodology. Mild basic treatment of leads to quantitative formation of tricyclo[5.2.1.02,6]decatrienone which rapidly undergoes either regioselective nucleophilic addition or Diels-Alder cyclization depending on the applied reaction conditions