Copper-catalyzed ortho-halogenation of protected anilines
作者:Beatriz Urones、Ángel Manu Martínez、Nuria Rodríguez、Ramón Gómez Arrayás、Juan C. Carretero
DOI:10.1039/c3cc47174h
日期:——
A practical Cu-catalyzed direct ortho-halogenation of anilines under aerobic conditions has been developed. The reaction shows typically excellent mono-substitution selectivity, high ortho-regiocontrol and large functional group tolerance.
PdII-Catalyzed CH Olefination of N-(2-Pyridyl)sulfonyl Anilines and Arylalkylamines
作者:Alfonso García-Rubia、Beatriz Urones、Ramón Gómez Arrayás、Juan C. Carretero
DOI:10.1002/anie.201105611
日期:2011.11.11
N‐(2‐pyridyl)sulfonyl group acts as a removable directing group in the PdII‐catalyzed aryl CH ortho alkenylation of N‐alkyl aniline, benzylamine, and phenethylamine derivatives with electron‐poor alkenes. The products were obtained in high yields (70–90 %) and with complete regiocontrol. The mild reductive N‐sulfonyl removal enables the construction of a variety of nitrogen heterocycles. EWG=electron‐withdrawing
Heteroaryl 2‐Sulfonamide Synthesis by SN2 Reaction–Oxidation Cascade
作者:Lu Yan、Chaofan Xu
DOI:10.1002/ejoc.202400235
日期:2024.6.10
Heteroaryl 2‐sulfonamides are an important structural moiety in drug discovery. However, reports of the efficient synthesis of these scaffolds are rare. Herein we disclose new reaction conditions to synthesize heteroaryl 2‐sulfonamides from disulfanes and amines through an SN2‐oxidation cascade. The approach is compatible with a wide variety of heteroaryl and amine substrates and can be conducted on a gram scale. A potential Werner Syndrome Protein (WRN) small molecule inhibitor H3B‐968 was also synthesized by this method.