Synthesis 2022; 54(12): 2865-2875
DOI: 10.1055/a-1754-7424
paper

Stereoselective Synthesis of Cyclohexane Derivatives: Tandem Lithium Iodide Mediated Intramolecular Conjugate Addition of Thiols to α,β-Bisenones

Minseok Jeon
a   Department of Chemistry, Pukyong National University, Busan, 48513, Republic of Korea
,
Chaeyoung Yun
b   Department of Smart Green Technology Engineering, Pukyong National University, Busan, 48513, Republic of Korea
,
SungYong Seo
a   Department of Chemistry, Pukyong National University, Busan, 48513, Republic of Korea
b   Department of Smart Green Technology Engineering, Pukyong National University, Busan, 48513, Republic of Korea
› Institutsangaben
This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) (NRF-2021R1F1A1050933).


Abstract

A tandem intramolecular conjugate addition reaction was conducted with α,β-bisenones as selected Michael acceptors which were converted into 1,2,3-trisubstituted six-membered rings in the presence of activated sulfur nucleophiles. The products were obtained in good to excellent yields (maximum yield: 99%). Various substituted α,β-bisenones and sulfur nucleophiles were examined to understand the substrate scope of the reaction. Only one diastereomer was isolated, as lithium iodide mediated enolate trapping reactions improve the stereoselectivity of reactions involving 1,2,3-trisubstituted cyclohexanes.

Supporting Information



Publikationsverlauf

Eingereicht: 22. Dezember 2021

Angenommen nach Revision: 28. Januar 2022

Accepted Manuscript online:
28. Januar 2022

Artikel online veröffentlicht:
23. März 2022

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