Catalytic Intermolecular Ortho-Arylation of Phenols
作者:Robin B. Bedford、Michael E. Limmert
DOI:10.1021/jo030157k
日期:2003.10.1
catalysts such as [RhCl(PPh3)3] or [[RhCl(COD)]2] with PiPr2(OAr) or P(NMe2)3 co-catalysts allows the ortho-selective intermolecular arylation of phenols. The reaction proceeds via orthometalation of P-OAr groups and then transesterification liberates the product phenol. When 2-substituted phenols are used as substrates, [RhCl(PPh3)3]/iPr2(OAr) mixtures are typically the catalysts of choice, whereas for substrates
Simple rhodium–chlorophosphine pre-catalysts for the ortho-arylation of phenols
作者:Robin B. Bedford、Michael Betham、Andrew J. M. Caffyn、Jonathan P. H. Charmant、Lesley C. Lewis-Alleyne、Philip D. Long、Dorian Polo-Cerón、Sanjiv Prashar
DOI:10.1039/b718128k
日期:——
Simple chlorodiisopropylphosphine adducts of rhodium, either pre-formed or formed in situ, prove to be highly effective catalysts for the ortho-arylation of phenols.