Isothiourea-catalysed transfer hydrogenation of α,β-unsaturated para-nitrophenyl esters
作者:Jiufeng Wu、Claire M. Young、Andrew D. Smith
DOI:10.1016/j.tet.2020.131758
日期:2021.1
transfer hydrogenation of α,β-unsaturated para-nitrophenyl esters using Hantzsch ester has been developed. Good to excellent yields are observed using α,β-unsaturated aryl esters bearing electron-withdrawing β-substituents. The aryl ester products can either be isolated directly in moderate to excellent yields (7 examples, 16–98%) or converted to the corresponding methyl esters (2 examples, 68–70% yield)