title: (4R)-3-Hy-droxy-7-isopropyl-4-methyl-5,6-di-hydro-benzo-furan-2(4H)-one.
abstract: In the title compound, alternatively called α-hy-droxy-γ-alkyl-idenebutenolide, C12H16O3, two independent mol-ecules (A and B) crystallize in the asymmetric unit in each of which the 5,6-di-hydro-benzo ring has an envelope conformation. The torsion angle along the butadiene chain in the γ-alkyl-idenebutenolide core is -177.9 (2)° for mol-ecule A and 179.9 (2)° for mol-ecule B. In the crystal, O-H⋯O hydrogen bonds between hy-droxyl and carbonyl groups of adjacent independent mol-ecules form dimers with R (2) 2(10) loops.
authors.affiliation: Institut für Anorganische Chemie, Universität Erlangen-Nürnberg, Egerlandstrasse 1, D-91058 Erlangen, Germany.
authors.forename: Frank W
authors.initials: FW
authors.lastname: Heinemann
authors.affiliation: Institut für Anorganische Chemie, Universität Erlangen-Nürnberg, Egerlandstrasse 1, D-91058 Erlangen, Germany.
authors.forename: Alberto
authors.initials: A
authors.lastname: Herrera
authors.affiliation: Departamento de Química, Universidad Simón Bolívar, Apartado 89000, Caracas 1020-A, Venezuela.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Agrifoglio
authors.affiliation: Institut für Anorganische Chemie, Universität Erlangen-Nürnberg, Egerlandstrasse 1, D-91058 Erlangen, Germany.
authors.forename: Romano
authors.initials: R
authors.lastname: Dorta
authors.affiliation: Departamento de Química, Universidad Simón Bolívar, Apartado 89000, Caracas 1020-A, Venezuela.
authors.forename: Jesús
authors.initials: J
authors.lastname: Pastrán
keywords: crystal structure