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Preparation of New 2,3-Diphenylpropenoic Acid Esters – Good Yields Even for the More Hindered Z Isomers

Author(s): László Boros | Károly Felföldi | István Pálinkó

Journal: Molecules
ISSN 1420-3049

Volume: 9;
Issue: 4;
Start page: 256;
Date: 2004;
Original page

Keywords: Esterification of E- and Z-2 | 3-diphenylpropenoic acids | DMSO/KOH/alkyl halide reactant

The potassium salt of E- and Z-2,3-diphenylpropenoic acids prepared in situ could be esterified efficiently in DMSO with the appropriate alkyl halides at room temperature. In this way 10 previously undescribed esters of these acids were synthesised and characterised. Excellent yields were observed for most of the E isomers and the more hindered Z esters were also obtained in good yields, far better than those obtained applying the classical acid-catalysed esterification reaction.
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