Organic reactions in ionic liquids: MgO as efficient and reusable catalyst for the Michael addition of sulfonamides to α,β-unsaturated esters under microwave irradiation, By Abdolkarim Zare

Research

Title	Organic reactions in ionic liquids: MgO as efficient and reusable catalyst for the Michael addition of sulfonamides to α,β-unsaturated esters under microwave irradiation
Type	Article
Keywords	Michael addition, sulfonamide, α,β-unsaturated ester, ionic liquid, MgO, microwave
Journal	ARKIVOC
DOI	10.3998/ark.5550190.0008.d13
Researchers	Abdolkarim Zare (First researcher) , Alireza Hasaninejad (Second researcher) , Ali Khalafi-Nezhad (Third researcher) , Ahmad Reza Moosavi-Zare (Fourth researcher) , Abolfath Parhami (Fifth researcher)

Abstract

The microwave-assisted Michael addition reaction of sulfonamides 1 to α,β-unsaturated esters 2 was carried out in the presence of a catalytic amount of magnesium oxide (MgO) and with the ionic liquid 1-butyl-3-methylimidazolium bromide ([bmim]Br) as a recyclable solvent affording N-alkyl sulfonamides 3 as well as N,N-dialkyl sulfonamides 4 in short reaction times.