Debenzylative Sulfonylation of Tertiary Benzylamines Promoted by Visible Light
作者:Ying Fu、Qing‐Kui Wu、Zhengyin Du
DOI:10.1002/ejoc.202100144
日期:2021.3.26
A visiblelight photocatalytic debenzylative sulfonylation of tertiary benzylamines is described, affording a series of sulfonamides in high yields. This operationally simple transformation showed high functional group compatibility and wide substrate scope.
NaI-Catalyzed Oxidative Amination of Aromatic Sodium Sulfinates: Synergetic Effect of Ethylene Dibromide and Air as Oxidants
作者:Ying Fu、Quan-Zhou Li、Qin-Shan Xu、Helmut Hügel、Ming-Peng Li、Zhengyin Du
DOI:10.1002/ejoc.201801386
日期:2018.12.31
A novel NaI-catalyzed oxidative amination of sodium sulfinates, employing both ethylenedibromide (EDB) and air as the oxidants, is described. EDB was first demonstrated to be a promising mild organic oxidant that in air, converted NaI into molecular iodine to promote the cross-coupling reactions of aromatic sodium sulfinates with amines to produce arylsulfonamides. Mechanistic studies indicated that
描述了一种使用二溴化乙烯 (EDB) 和空气作为氧化剂的新型 NaI 催化亚磺酸钠氧化胺化。EDB 首次被证明是一种有前途的温和有机氧化剂,它在空气中将 NaI 转化为分子碘,以促进芳族亚磺酸钠与胺的交叉偶联反应,生成芳基磺酰胺。机理研究表明,反应过程中可能涉及自由基途径。
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