title: 7,7-Dimethyl-3,3,4a-tris-(3-methyl-but-2-en-yl)-4a,5,6,7-tetra-hydro-2H-chromene-2,4(3H)-dione.
abstract: The title compound, C(26)H(38)O(3), was prepared by an intra-molecular Claisen-like cyclization of ethyl 2-acet-oxy-4,4-dimethyl-1-(3-methyl-but-2-en-yl)cyclo-hex-2-enecarboxyl-ate followed by dialkyl-ation. One of the methyl groups is disordered over two sets of sites in a 0.67:0.33 ratio.
authors.forename: Katrin
authors.initials: K
authors.lastname: Möws
authors.forename: Markus
authors.initials: M
authors.lastname: Schürmann
authors.forename: Hans
authors.initials: H
authors.lastname: Preut
authors.forename: Bernd
authors.initials: B
authors.lastname: Plietker