Exploring the Reactivity ofN-Alkynylated Sulfoximines: [2 + 2]-Cycloadditions
摘要:
To assess the potential of N-alkynylated sulfoximines as new (chiral) reagents for organic synthesis, their reactivity profile in numerous synthetic processes is under investigation. When reacted with ketenes, the alkynylated-sulfoximines undergo a [2 + 2]-cycloaddition process to afford sulfoximine-functionalized cyclobutenones in excellent yields.
Exploring the Reactivity of<i>N</i>-Alkynylated Sulfoximines: [2 + 2]-Cycloadditions
作者:Ramona Pirwerdjan、Daniel L. Priebbenow、Peter Becker、Philip Lamers、Carsten Bolm
DOI:10.1021/ol4026028
日期:2013.11
To assess the potential of N-alkynylated sulfoximines as new (chiral) reagents for organic synthesis, their reactivity profile in numerous synthetic processes is under investigation. When reacted with ketenes, the alkynylated-sulfoximines undergo a [2 + 2]-cycloaddition process to afford sulfoximine-functionalized cyclobutenones in excellent yields.
Synthesis of Sulfoximidoyl-Containing Hypervalent Iodine(III) Reagents and Their Use in Transition-Metal-Free Sulfoximidations of Alkynes
hypervalent iodine(III) reagents incorporating transferable sulfoximidoyl groups were obtained through ligand exchange reactions of methoxy(tosyloxy)iodobenzene (MTIB) with NH sulfoximines in good to excellent yields. The solid‐state structure of a representative product was characterized by X‐ray crystallography. Utilizing these reagents in synthesis provides a new, transition‐metal‐free approach towards