S. Niwayama, K. Houk
Feb 11, 1992
Citations
0
Influential Citations
26
Citations
Journal
Tetrahedron Letters
Abstract
Abstract Methyl 3-formylcyclobutene-3-carboxylate was synthesized in five steps from commercially available cyclobutane-1,1-dicarboxylic acid. Thermolysis afforded methyl (2H)-pyrane-5-carboxylate, which was formed by electrocyclization of the formyl-in, ester-out product of ring opening. This confirms theoretical predictions.