Stereoselective hydrohalogenation of alkynoic acids and their esters in ionic liquids

J Salazar, F Fernández, J Restrepo…

Index: Salazar, Jose; Fernandez, Francys; Restrepo, Jelem; Lopez, Simon E. Journal of Chemical Research, 2007 , # 3 p. 170 - 172

Full Text: HTML

Citation Number: 0

Abstract

A novel procedure is described for the hydrohalogenation of alkynoic acids and their esters using N-alkylpyridinium ionic liquids. Hydrohalogenating agents were prepared by mixing N- alkylpyridinium halides with an equimolar amount of trifluoroacetic acid. The corresponding halogenated alkenes were obtained in good yields with high diastereoselectivity.