Lothar Meier, Jan Runsink, H. Scharf
Dec 17, 1982
Citations
0
Influential Citations
5
Citations
Journal
European Journal of Organic Chemistry
Abstract
Durch Thermolyse der 4-Methylen-1,3-dioxolane 4 oder der β-Oxa-γ,δ-enone 6 entstehen in Gegenwart von Protonen rac-4,5,6,7-Tetrahydro-3,5-dimethyl-1-benzofuran (5a) sowie ein Gemisch von dessen 3,4- und 3,6-Dimethylisomeren 5b/5c. Der Mechanismus der Furanbildung wird untersucht. Reactions of Carboxonium Ions of Cyclic Acetals, VII1). — 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 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.