title: Highly Asymmetric Cyclopropanation With Two Sulfinyl Auxiliaries as a Way to a Useful Synthetic Intermediate.
abstract: The asymmetric cyclopropanation using double sulfinyl auxiliary gave bis-sulfoxide with full diastereoselectivity and very high enantioselectivity. One of the sulfinyl substituents can be removed by sulfinyl metal exchange. Differentiation of sulfinyl substituents made it possible to assign the place of attack of the Grignard reagent.
authors.affiliation: Department of Heteroorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Lodz, Poland.
authors.forename: Wanda H
authors.initials: WH
authors.lastname: Midura
authors.affiliation: Department of Heteroorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Lodz, Poland.
authors.forename: Jerzy
authors.initials: J
authors.lastname: Krysiak
keywords: asymmetric cyclopropanation; phosphonate rearrangement; sulfinyl - metal exchange; sulfonium ylide; sulfoxide