C−C Bond-Forming Desulfurizations of Sulfoximines

Synthesis of o-Sulfinylanilines from N-Alkyl Sulfoximines and Arynes

N-Alkyl sulfoximines react with arynes generated in situ under mild conditions providing o-sulfinylanilines in good yields. The transformation is characterized by a broad substrate scope and a good functional group tolerance. The structure of a reaction product was confirmed by single-crystal X-ray diffraction.

Synthetic approaches and applications of sulfonimidates

This review article explores the synthesis of the organosulfur(vi) species named sulfonimidates, focusing on their synthesis from sulfur(ii), sulfur(iv) and sulfur(vi) reagents, and investigates their recent resurgeance in interest as intermediates to access other important organosulfur compounds. Sulfonimidates have been utilized as precursors for polymers, sulfoximine and sulfonimidamide drug candidates and as alkyl transfer reagents.

Conversion and degradation pathways of sulfoximines

The overview describes laboratory transformations leading to sulfoximine degradations to enable more focussed analyses of potential products and pathways.

Enantioselective synthesis of angularly substituted 1-azabicyclic ring systems: dynamic kinetic resolution using aza-Cope rearrangements

A useful enantioselective synthesis of angularly substituted 1-azabicyclic molecules that delivers the bicyclic amine products in good yield and 99% ee is reported. Angularly substituted cis-octahydrocyclopenta[b]pyrroles, cis-octahydroindoles, cis-decahydrocyclohepta[b]pyrroles, and cis-octahydrocyclopenta[b]pyridine are formed in good yields and 99% ee exclusively as the cis stereoisomers. Decahydroquinolines are generated as mixtures of cis and trans stereoisomers in similarly high ee. The starting materials for this cascade transformation are assembled in five steps from cycloalkanones and enantiomerically pure (R)-2-phenyl-3-butenamine. This enantioselective synthesis introduces a new strategy for dynamic kinetic resolution in which a rapid tautomeric equilibration of diastereomeric iminium cations is combined with a diastereoselective sigmatropic rearrangement.