Synthesis of biaryls via intramolecular free radical ipso-substitution reactions
作者:Feroze Ujjainwalla、Maria Lucília E.N. da Mata、Andrew M.K. Pennell、Carmen Escolano、William B. Motherwell、Santiago Vázquez
DOI:10.1016/j.tet.2015.07.048
日期:2015.9
intramolecular freeradical [1,5]-ipso-substitution using sulfonamide and sulfonate derived tethering chains. The overall efficiency of the process is determined by appropriately positioned substituents on the aromatic acceptor ring. The extension of the process to benzylic sulfonates and their corresponding N-methylsulfonamide alternatives as substrates in potential [1,6]-ipso-substitution reactions leads
Steric and electronic effects in the synthesis of biaryls and their heterocyclic congeners using intramolecular free radical [1,5] ipso substitution reactions
作者:Maria Lucília E.N da Mata、William B Motherwell、Feroze Ujjainwalla
DOI:10.1016/s0040-4039(96)02236-8
日期:1997.1
intramolecular free radical [1,5] ipso substition using sulfonamide and sulfonate tethering chains, since the introduction of either electron releasing or electron withdrawing groups ortho to the sulfonyl substituted acceptor ring facilitates the overall reaction.