title: Halocyclizations of Unsaturated Sulfoximines.
abstract: A method for halocyclizations of S-alkenylsulfoximines is reported. When unsaturated NH-sulfoximines are treated with a combination of iodobenzene diacetate and potassium iodide, a transformation to the corresponding five- and six-membered cyclic products occurs providing S-oxides of dihydro isothiazoles and tetrahydro-1,2-thiazines, respectively, in moderate to high yields with good diastereoselectivities and excellent regioselectivities.
authors.affiliation: Institute of Organic Chemistry, RWTH Aachen University , Landoltweg 1, D-52074 Aachen, Germany.
authors.forename: Han
authors.initials: H
authors.lastname: Wang
authors.affiliation: Institute of Organic Chemistry, RWTH Aachen University , Landoltweg 1, D-52074 Aachen, Germany.
authors.forename: Marcus
authors.initials: M
authors.lastname: Frings
authors.affiliation: Institute of Organic Chemistry, RWTH Aachen University , Landoltweg 1, D-52074 Aachen, Germany.
authors.forename: Carsten
authors.initials: C
authors.lastname: Bolm