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

Bromination of alpha,beta-unsaturated acids of pyridine preparation of 2-bromoethylenes of the pyridine series

M. Bencková and J. Kováč

Research Institute of Chemical Technology, CS-836 03 Bratislava

Abstract: Preparation of bromides of 2,3-dibromo-3-(X-pyridinium)propanoic acids (X = 2, 3, 4) by bromination of the respective (E)-3-(X-pyridyl)-2-propenoic acids (X = 2, 3, 4) in chloroform and glacial acetic acid has been described. (Z)-X-(2-Bromovinyl)pyridines (X = 2, 3, 4) were prepared by debromination decarboxylation of alkaline 2,3-dibromo-3-(X-pyridyl)propanoates (X = 2, 3, 4) in acetone. The structures of the prepared derivatives were proved by ¹H NMR spectra.

Full paper in Portable Document Format: 433a439.pdf

Chemical Papers 43 (3) 439–445 (1989)