title: 2-Methyl-(1Z,3E)-butadiene-1,3,4-tricarboxylic acid, "isoprenetricarboxylic acid".
abstract: [reaction: see text] The synthesis of the title compound 7 from ethyl glyoxylate and dimethyl and diethyl beta-methylglutaconate is described along with its physical properties that suggest its inability to assume a cis-dienoid structure due to steric hindrance between the methyl and carboxyl groups.
authors.affiliation: Laboratory of Applied Mass Spectrometry, National Heart, Lung, and Blood Institute, Bethesda, Maryland 20892, USA.
authors.forename: Mayer B
authors.initials: MB
authors.lastname: Goren
authors.forename: Edward A
authors.initials: EA
authors.lastname: Sokoloski
authors.forename: Henry M
authors.initials: HM
authors.lastname: Fales
mesh_terms: D014233:Tricarboxylic Acids / Q000138:chemical synthesis*
chemical_list: D014233:Tricarboxylic Acids