131973-99-4Relevant academic research and scientific papers
Enantioselective Carbon-Carbon Bond Formation via SN2 Displacements of Acyclic Allylic Mesylates
Marino, Joseph P.,Viso, Alma,Lee, Jae-Don,De La Pradilla, Roberto Fernandez,Fernandez, Paloma,Rubio, M. Belen
, p. 645 - 653 (2007/10/03)
The copper-mediated SN2′ displacement of enantiomerically pure allylic mesyloxy vinyl sulfoxides takes place with high yields and stereoselectivities. In these adducts, the newly created chiral center is adjacent to a vinyl sulfoxide functionality which should allow for subsequent chirality transfer operations. Alternatively, enantiopure alkenyl sulfones and alkenes bearing an allylic stereocenter are readily available from these adducts with high geometric control. The SN2′ displacements of structurally related mesyloxy sulfides and sulfones with organocuprates have been examined. From a single enantiomer at the allylic alcohol position, the absolute configuration of the new chiral center may be controlled by adjusting the oxidation level on sulfur.
Evidence for "stable" organocopper intermediates in the reaction between Me2CuLi·Lil and allylic sulfinyl mesylates
De La Pradilla, Roberto Fernandez,Rubio, M. Belen,Marino, Joseph P.,Viso, Alma
, p. 4985 - 4988 (2007/10/02)
The addition of Me2CuLi·LiI to acyclic allylic sulfinyl mesylates bearing a phenyl functionality in the molecule gives rise to chiral allenes 4 and 11 in variable yields and optical purities, presumably via an unusually stable σ-copper(III) spe
Asymmetric Carbon-Carbon Bond Formation via Sulfoxid-Directed SN2' Displacements of Acyclic Allylic Mesylates
Marino, Joseph P.,Viso, Alma,Pradilla, Roberto Fernandez de la,Fernandez, Paloma
, p. 1349 - 1351 (2007/10/02)
The addition of organocyanocuprates to acyclic allylic mesylates bearing a chiral sulfoxide in the 2-position occurs with complete SN2' regioselectivity, high E/Z stereoselectivity (15:1) and high asymmetric induction to produce enantiomericall
