64745-59-1Relevant articles and documents
Diels-Alder reactions of α-vinylidene-γ-butyrolactones
Fotiadu,Archavlis,Buono
, p. 4859 - 4862 (2007/10/02)
α-Vinylidene-γ-butyrolactones 2 and 4 are readily prepared via the reaction of ylides 1 or 3 with ketene. Diels-Alder cycloadditions of these compounds with typical dienes are described, addition of 2 to cyclopentadiene giving predominantly the exo stereomer.
Studies on New Synthetic Pathways to Δα,β-Butenolides from α-Methylbutanolides. II. Electrolytic Oxidation of Simple α-Carboxy-α-methylbutanolides
Kawamata, Takeshi,Inayama, Seiichi,Sata, Kazuko
, p. 277 - 281 (2007/10/02)
A new approach to the synthesis of Δα,β-butenolides from γ-butanolides by means of the electrolytic oxidation of α-carboxy-α,γ-dimethyl-γ-butyrolactone (3b) and its α-carboxy-α-methyl analog (3d) resulted in predominant formation of the endocyc