Leaving Group and Regioselectivity Switches in the Aminoalkylation Reaction of Indoles and Related Heterocycles with α-Amido Sulfones
作者:Gonzalo Blay、Rosa M. Girón、Marc Montesinos-Magraner、José R. Pedro
DOI:10.1002/ejoc.201300369
日期:2013.6
The regioselectiveaminoalkylation of indoles and relatedheterocycles with α-amidosulfones under basic conditions has been studied. The reaction that employed the MeMgBr/MgBr2 system provided high yields of 3-(1-carbamoylalkyl)indoles. On the other hand, the reaction that used Cs2CO3 afforded 1-(1-carbamoylalkyl)indoles exclusively in high yields. The first reaction constitutes a switch of the leaving