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  • Basic-functionalized recyclable ionic liquid catalyst: A solvent-free approach for Michael addition of 1,3-dicarbonyl compounds to nitroalkenes under ultrasound irradiation.

Basic-functionalized recyclable ionic liquid catalyst: A solvent-free approach for Michael addition of 1,3-dicarbonyl compounds to nitroalkenes under ultrasound irradiation.

Ultrasonics sonochemistry (2012-12-12)
Senthil Narayanaperumal, Rodrigo César da Silva, Karla Santos Feu, Alexander Fernández de la Torre, Arlene G Corrêa, Márcio Weber Paixão
ABSTRACT

A task-specific ionic liquid (TSIL) has been introduced as a recyclable catalyst in Michael addition. A series of nitroalkenes and various C-based nucleophiles were reacted in the presence of 30mol% of recyclable basic-functionalized ionic liquid. Good to excellent yields were obtained in 30min under ultrasound irradiation.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
trans-β-Nitrostyrene, 99%
Sigma-Aldrich
Acetylacetone, produced by Wacker Chemie AG, Burghausen, Germany, ≥99.5% (GC)
Supelco
Acetylacetone, analytical standard
Sigma-Aldrich
Acetylacetone, ReagentPlus®, ≥99%