Formal Aniline Synthesis from Phenols through Deoxygenative N‐Centered Radical Substitution
作者:Samuel W. Lardy、Kristine C. Luong、Valerie A. Schmidt
DOI:10.1002/chem.201904288
日期:2019.12.2
lignin-derived substrates have emerged as desirable biorenewable chemical feedstocks for coupling reactions. A radical-mediated conversion of phenol derivatives to anilines is reported, using unfunctionalized hydroxamic acids as the N-centered radical source. The applicability of this triethylphosphitemediated O-atom transfer approach, which tolerates a range of steric and electronic demands to naturally
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