Competition between ester and formyl groups for control of torquoselectivity in cyclobutene electrocyclic reactions
1992; Elsevier BV; Volume: 33; Issue: 7 Linguagem: Inglês
10.1016/s0040-4039(00)91566-1
ISSN1873-3581
Autores Tópico(s)Chemistry and Chemical Engineering
ResumoMethyl 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.
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