ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Furan derivatives. 176. Synthesis and properties of 4-[2-(5-X-2-furyl)vinylene]benzoic acids and their methyl esters

V. Knoppová, A. Beňo, and J. Kováč

Department of Organic Chemistry, Slovak Technical University, 812 37 Bratislava

Abstract: By the Wittig reaction of 4-methoxycarbonylbenzyltriphenylphosphonium bromide with 5-X-2-furaldehydes, where X =H, CH₃, N0 2 , Br, I, COOCH₃, the corresponding methyl 4-[2-(5-X-2-furyl)vinylene]benzoates were prepared. Alkali hydrolysis of these compounds gave the appropriate benzoic acids. Ultraviolet and infrared spectra are presented and discussed. The pK values were determined potentiometrically.

Full paper in Portable Document Format: 363a411.pdf

Chemical Papers 36 (3) 411–417 (1982)