title: (RS)-6-ethyl 2-carboxy-1,2,3,4-tetrahydroazulene-6-carboxylate.
abstract: The title compound, C(14)H(16)O(4), was obtained during the synthesis of 2,6-disubstituted azulene derivatives. In the partially reduced azulene skeleton, the absence of a H atom at the ester substitutent position of the seven-membered ring, as well as lengthened double bonds, indicate a conjugative stabilized system with two overlaid tautomers.
authors.affiliation: Institut für Organische Chemie, TU Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany.
authors.forename: Zakir
authors.initials: Z
authors.lastname: Hussain
authors.forename: Thomas
authors.initials: T
authors.lastname: Oeser
authors.forename: Henning
authors.initials: H
authors.lastname: Hopf