Transition Metal-Catalyzed Regio- and Stereoselective Aminobromination of Olefins with TsNH<sub>2</sub> and NBS as Nitrogen and Bromine Sources
作者:Vinay V. Thakur、Siva Kumar Talluri、A. Sudalai
DOI:10.1021/ol027530f
日期:2003.3.1
for aminohalogenation of olefins has been developed for the preparation of vicinal haloamine derivatives in high yields by using Cu, Mn, or V catalysts with p-toluenesulfonamide (TsNH(2)) and N-bromosuccinimide (NBS) as nitrogen and brominesources, respectively. Unprecedented regio- and stereoselectivity (anti:syn > 99:1) toward the aminohalogenation process is shown for olefinic substrates as well
Indium Trihalide Mediated Regioselective Ring Opening of Aziridines: A Facile Synthesis of 2-Haloamines
作者:J. S. Yadav、B. V. Subba Reddy、G. Mahesh Kumar
DOI:10.1055/s-2001-16775
日期:——
A variety of N-tosyl aziridines undergo ringopening with indium trihalides in acetonitrile at ambient temperature to afford the corresponding haloamines in excellent yields with high regioselectivity.
Silicon Powder: The First Nonmetal Elemental Catalyst for Aminobromination of Olefins with TsNH<sub>2</sub> and NBS
作者:Jun-Fa Wei、Zhan-Guo Chen、Wei Lei、Li-Hui Zhang、Ming-Zheng Wang、Xian-Ying Shi、Run-Tao Li
DOI:10.1021/ol9015833
日期:2009.9.17
alternative to transition metal catalysts for aminobromination of α,β-unsaturated carbonyl compounds and simple olefins with p-toluenesulfonamide (4-TsNH2) and NBS, affording the aminobrominated products in high yields and regio- and stereoselectivity. The high reactivity of electron-rich substrates reveals that the reaction has the electrophilic addition feature.
Bromosulfonamidation of Alkenes using S,S-Dimethyl-N-(p-toluenesulfonyl)sulfilimine
作者:Sadagopan Raghavan、S. Ramakrishna Reddy、K. A. Tony、Ch. Naveen Kumar、S. Nanda
DOI:10.1055/s-2001-14910
日期:——
A new method for the bromosulfonamidation of olefins using a combination of S,S-dimethyl-N-(p-toluenesulfonyl)sulfilimine and N-bromosuccinimide is disclosed herein.
The carbon dioxide (CO2)-induced amidobromination of olefins with bromamine-T is described. The method can be used in reactions with a wide range of olefins, both aromatic and aliphatic, as well as electron-rich and deficient olefins, leading to the regioselective formation of amidobrominated compounds.