N-Alkynylated sulfoximines have been obtained by copper-catalyzed cross-coupling reactions starting from NH-sulfoximines and bromoacetylenes in moderate to good yields. The reaction conditions are mild, and the substrate scope is wide.
A Copper‐Catalyzed Interrupted Domino Reaction for the Synthesis of Fused Triazolyl Benzothiadiazine‐1‐oxides
作者:Renè Hommelsheim、Sandra Bausch、Arjuna Selvakumar、Mostafa M. Amer、Khai‐Nghi Truong 、Kari Rissanen、Carsten Bolm
DOI:10.1002/chem.202203729
日期:2023.3
A copper(I)-catalyzed interrupted dominoreaction of 2-azido sulfoximines with 1-iodoalkynes affords fused triazolyl-containing benzothiadiazine-1-oxides in good to excellent yields. The substrate scope is broad and the functional group tolerance high. Mechanistic studies suggest a reaction pathway via copper π-complexes and a consecutive oxidative coupling of a relevant iodinated triazole as intermediate
Copper-Catalyzed Regio- and Stereoselective Hydroarylation of Ynamide
作者:Avijit Maity、Akhila K. Sahoo
DOI:10.1021/acs.joc.3c01720
日期:2024.1.19
Presented herein is a copper-catalyzed trans-hydroarylation of ynamides. The reaction showcases the assembly of boronic acids across the carbon–carbon triple bond of ynamides. The reaction proceeds under mild conditions offering a complementary approach for the versatile synthesis of multifunctional (E)-α,β-disubstituted enamides. Moreover, the hydroarylation process is highly regio- and stereoselective
本文提出了铜催化的炔酰胺的反式加氢芳基化。该反应展示了硼酸在炔酰胺的碳-碳三键上的组装。该反应在温和条件下进行,为多功能 ( E )-α,β-二取代烯酰胺的多功能合成提供了补充方法。此外,加氢芳基化过程具有高度区域选择性和立体选择性。该转化显示了广泛的范围(30 个示例)并容忍各种不稳定的官能团。对照实验提供了支持机械循环和观察到的选择性的实质性证据。
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.
Exploring the Reactivity of <i>N</i>-Alkynylated Sulfoximines: Regioselective Hydroacyloxylations and Hydroaminations
作者:Ramona Pirwerdjan、Peter Becker、Carsten Bolm
DOI:10.1021/acs.orglett.5b02477
日期:2015.10.16
N-Alkynylated sulfoximines undergo smooth transformations with benzoic acids and sulfonamides under mild conditions affording the corresponding hydroacyloxylation or hydroamination products. The transformations proceed in the absence of catalysts or additional reagents in short reaction times generating the products in excellent yields and very high stereoselectivities.