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KF/Al2O3 efficiently catalyzes the microwave-assisted Michael addition of sulfonamides to α,β-unsaturated esters under solvent-free conditions to afford N-alkyl derivatives of sulfonamides as biologically interesting compounds in high yields and in short reaction times. In this reaction, N,N-dialkylsulfonamides are also produced, but in very low yields. [ABSTRACT FROM AUTHOR]

Indoles are efficiently condensed with aromatic and aliphatic aldehydes in the absence of any catalyst in ionic liquid 1-butyl-3-methylimidazolium bromide {bmim]Br} under microwave irradiation to afford bis(indolyl)methanes in good to excellent yields and in short reaction times. Les indoles se condensent d’une manière efficace avec les aldéhydes aliphatiques et aromatiques, sans nécessité de catalyseur, dans le liquide ionique bromure de 1-butyl-3-méthylimidazolium {[bmim]Br} et sous irradiation par des microondes et ces réactions conduisent, en un court laps de temps, à la formation de bis(indolyl)méthanes avec des rendements allant de bons à excellents. [ABSTRACT FROM AUTHOR]