84474-78-2Relevant academic research and scientific papers
Reactions of Carboxonium Ions of Cyclic Acetals, VII. - Synthesis of rac-4,5,6,7-Tetrahydro-3,5-dimethyl-1-benzofuran and of a Mixture of its 3,4- and 3,6-Dimethyl Isomers
Meier, Lothar,Runsink, Jan,Scharf, Hans-Dieter
, p. 2163 - 2171 (2007/10/02)
Thermolysis of the 4-methylene-1,3-dioxolanes 4 or of the β-oxa-γ,δ-enones 6 leads in the presence of protons to rac-4,5,6,7-tetrahydro-3,5-dimethyl-1-benzofuran (5a) and to a mixture of its 3,4- and 3,6-dimethyl isomers 5b/5c.The mechanism of the furan formation has been investigated.
