Alkylidene malonates and α,β-unsaturated α′-hydroxyketones as practical substrates for vinylogous Friedel–Crafts alkylations in water catalysed by scandium(<scp>iii</scp>) triflate/SDS
作者:Jens Oelerich、Gerard Roelfes
DOI:10.1039/c4ob02487g
日期:——
Alkylidene malonates and α,β-unsaturated α′-hydroxyketones are demonstrated to be efficient classes of electrophiles for the scandium(III) triflate/sodium dodecyl sulphate (SDS) catalysed vinylogous Friedel–Crafts alkylation of indoles and pyrroles in water. These substrates contain an easily removable auxiliary group that increases affinity for the catalytic metal ion in such a way that they can compete