Copper-Catalyzed Amination of Primary Benzylic C−H Bonds with Primary and Secondary Sulfonamides
作者:David A. Powell、Hope Fan
DOI:10.1021/jo100197r
日期:2010.4.16
A room-temperature, copper-catalyzed amination of primary benzylic C-H bonds with primary and secondary sulfonamides is described. The reaction is applicable to the coupling of a range of primary and secondary benzylic hydrocarbons with a diverse set of sulfonamides and is tolerant of substitution on both coupling partners. Factors which influence the selectivity of C-H functionalization between primary and secondary sites are examined.
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。