Original scientific paper

Photochemical Isomerizations of Furylacrylic Acids

G. Karminski-Zamola ; Institute of Organic Chemistry and Biochemistry, University of Zagreb
K. Jakopčić ; Laboratory of Organic Chemistry, Faculty of Technology, Uni-versity of Zagreb, 41000 Zagreb, Croatia, Yugoslavia

Abstract

It was shown that cis-3-(2' -furyl)acrylic acid (lb), cis-2-
methyl-3-(2' -furyl)acrylic acid (Ilb), cis-3-(5' -methyl-2' -furyl)
acrylic acid (IIIb) and cis-2-methyl-3-(5'-methyl-2' -furyl)acrylic
acid (!Vb) can be conveniently prepared by photochemical isomerization
of the corresponding trans acids (Ia-IVa). The rate of
isomerization and the composition of the mixture at photoequi-
1ibrium in water-filtered ultraviolet is not influenced by methyl
substitution. The isomeric acids were separated through their
cyclohexylammonium salts and characterized by elemental analyses,
uv. and ir. spectra.

Keywords

Hrčak ID:

196841

URI

https://hrcak.srce.hr/196841

Publication date:

20.7.1974.

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