Aminohalogenation of Electron-Deficient Olefins Promoted by Hypervalent Iodine Compounds
作者:Xue-Liang Wu、Guan-Wu Wang
DOI:10.1002/ejoc.200800842
日期:2008.12
An efficient and practical procedure for the aminohalogenation of electron-deficientolefinspromoted by hypervalentiodinecompounds has been demonstrated. The catalytic efficiency of various hypervalentiodinecompounds with different carboxylic and sulfonic ligands has also been investigated and of these (diacetoxyiodo)benzene exhibited the highest activity. A series of substrates, including α,β-unsaturated
Aminochlorination in Water: First Brønsted Acid-Promoted Synthesis of Vicinal Chloramines
作者:Xue-Liang Wu、Guan-Wu Wang
DOI:10.1021/jo701957t
日期:2007.11.1
scaleable route for the regio- and diastereoselective synthesis of vicinal chloramines from electron-deficient olefins and Chloramine-T promoted by Brønsted acids in water has been realized for the first time. This novel protocol is efficient, mild, ecofriendly, and broadly applicable for the aminochlorination of various electron-deficient olefins including α,β-unsaturatedketones, cinnamate, and cinnamide
Mechanochemical Aminochlorination of Electron-Deficient Olefins with Chloramine-T Promoted by (Diacetoxyiodo)benzene
作者:Guan-Wu Wang、Xue-Liang Wu
DOI:10.1002/adsc.200700020
日期:2007.8.6
aminochlorination of electron-deficient olefins promoted by (diacetoxyiodo)benzene [PhI(OAc)2] was described using commercially available and cheap chloramine-T as a nitrogen and chlorine source. The vicinal chloramine derivatives were obtained in high regio- and stereoselectivity with good yields. PhI(OAc)2 was superior to metal salts for the aminochlorination of electron-deficient olefins.