Reactions of <i>N</i>-Methyl-<i>N</i>-(4-biphenylyl)nitrenium Ion with Electron-Rich Arenes: Laser Flash Photolysis and Product Studies
作者:Dominic Chiapperino、Sean McIlroy、Daniel E. Falvey
DOI:10.1021/ja011049n
日期:2002.4.1
trapping of the short-lived nitrenium ion by the arenes leads to three types of products: (1) the parent amine, N-methyl-N-4-biphenylylamine; (2) an ortho-adduct, where the ring position ortho to the nitrenium ion center is bonded to the arene ring; and (3) an N-adduct, where the nitrenium ion nitrogen is bonded to the trap. Laser flashphotolysisstudies show that the rates of these trapping reactions
Aryl radical-induced desulfonylative<i>ipso</i>-substitution of diaryliodonium salts: an efficient route to sterically hindered biarylamines
作者:Huangguan Chen、Limin Wang、Jianwei Han
DOI:10.1039/d0cc01766c
日期:——
By using vicinal aryl sulfonamide substituted diaryliodonium salts, a cascade of desulfonylation/aryl migration was promoted by triethylamine in the synthesis of sterically hindered biarylamines, which operated via a radical-induced reaction pathway. The products were readily converted into a variety of important synthons. Furthermore, coupling reactions of N-methyl biarylamine and 1,6-dibromopyrene