Ruthenium-Catalyzed Oxidative C(sp2)–H Bond Hydroxylation: Site-Selective C–O Bond Formation on Benzamides
摘要:
Well-defined ruthenium carboxylate complexes enabled unprecedented ruthenium-catalyzed C(sp(2))-H hydroxylations on benzamides with PhI(OAc)(2) as the oxidant at a remarkably low catalyst loading of 1.0 mol %.
Synthesis of Tertiary Amides from Anionically Activated Aromatic Trifluoromethyl Groups
作者:Gavin O’Mahony、Andrew K. Pitts
DOI:10.1021/ol100507n
日期:2010.5.7
In this paper, a novel synthesis of tertiary amides from anionically activated aromatic trifluoromethyl groups is presented. Anionically activated trifluoromethyl groups react with secondary amines under aqueous conditions to afford tertiary amides. The mechanism involves initial elimination of hydrogen fluoride by an E1cB mechanism to afford an electrophilic quinone methide- or azafulvene-type intermediate