Water-soluble calixarenes as new inverse phase-transfer catalysts. Their application to aldol-type condensation and Michael addition reactions in water
Aldol-type condensation and Michael addition reactions of activated methyl and methylene compounds in aqueous NaOH solution have been developed without the need for any added organic solvents. The water-soluble calix[n]arenes, which contain trimethyl-ammoniomethyl groups on the upper rim, were used as inverse phase-transfer catalysts, resulting in the corresponding products in good to excellent yields. (C) 2001 Elsevier Science Ltd. All rights reserved.
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Nihon Univ, Coll Ind Technol, Dept Ind Chem, Narashino, Chiba 2758575, JapanNihon Univ, Coll Ind Technol, Dept Ind Chem, Narashino, Chiba 2758575, Japan
Shimizu, S
Suzuki, T
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机构:Nihon Univ, Coll Ind Technol, Dept Ind Chem, Narashino, Chiba 2758575, Japan
Suzuki, T
Sasaki, Y
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机构:Nihon Univ, Coll Ind Technol, Dept Ind Chem, Narashino, Chiba 2758575, Japan
Sasaki, Y
Hirai, C
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机构:Nihon Univ, Coll Ind Technol, Dept Ind Chem, Narashino, Chiba 2758575, Japan