Preparation of New 2,3-Diphenylpropenoic Acid Esters Ã¢Â€Â“ Good Yields Even for the More Hindered Z IsomersAuthor(s): LÃƒÂ¡szlÃƒÂ³ Boros | KÃƒÂ¡roly FelfÃƒÂ¶ldi | IstvÃƒÂ¡n PÃƒÂ¡linkÃƒÂ³
Journal: Molecules ISSN 1420-3049
Volume: 9; Issue: 4; Start page: 256; Date: 2004;
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.