title: Crystal structure of (2R*,3aR*)-2-phenyl-sulfonyl-2,3,3a,4,5,6-hexa-hydro-pyrrolo-[1,2-b]isoxazole.
abstract: The title compound, C12H15NO3S, was prepared by 1,3-dipolar cyclo-addition of 3,4-di-hydro-2H-pyrrole 1-oxide and phenyl vinyl sulfone. In the mol-ecule, both fused five-membered rings display a twisted conformation. In the crystal, C-H⋯O hydrogen bonds link neighbouring mol-ecules, forming chains running parallel to thebaxis.
authors.affiliation: Departamento de Química Orgánica, Universidad de Salamanca, Plaza de los Caidos, 37008 Salamanca, Spain.
authors.forename: Yaiza
authors.initials: Y
authors.lastname: Hernández
authors.affiliation: Departamento de Química Orgánica, Universidad de Salamanca, Plaza de los Caidos, 37008 Salamanca, Spain.
authors.forename: Isidro
authors.initials: I
authors.lastname: Marcos
authors.affiliation: Departamento de Química Orgánica, Universidad de Salamanca, Plaza de los Caidos, 37008 Salamanca, Spain.
authors.forename: Narciso M
authors.initials: NM
authors.lastname: Garrido
authors.affiliation: Servicio de Difracción de Rayos X, Universidad de Salamanca, Plaza de los Caidos, 37008 Salamanca, Spain.
authors.forename: Francisca
authors.initials: F
authors.lastname: Sanz
authors.affiliation: Departamento de Química Orgánica, Universidad de Salamanca, Plaza de los Caidos, 37008 Salamanca, Spain.
authors.forename: David
authors.initials: D
authors.lastname: Diez
keywords: crystal structure; hydrogen bonds; isoxazolidines; nitro­nes; sulfones