Original scientific paper

Regiospecific Synthesis and X-ray Structural Study of Trifluoromethyl Substituted Dibenzosemibullvalene

L. Lončar ; Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, HR-41000 Zagreb, Croatia
M. Mintas ; Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, HR-41000 Zagreb, Croatia
G. Burek ; PLIVA, Pharmaceutical and Chemical Industry, HR-412000 Zagreb, Croatia
A. Hergold-Brundić ; Laboratory for General and Inorganic Chemistry, Faculty of Science, University of Zagreb, HR-41000 Zagreb, Croatia
A. Nagl ; Laboratory for General and Inorganic Chemistry, Faculty of Science, University of Zagreb, HR-41000 Zagreb, Croatia

Abstract

Preparation of the novel regiospecifically trifluoromethyl substituted dibenzobarrelene 5 and dibenzosemibullvalene 6 is described. Unequivocal proof for the stereostructure of 6 was obtained by its X-ray crystallographic analysis. Geometrical data from X-ray structural analysis showed that the ester carbonyl groups adopt unfavorable conformations for conjugative interactions with respect to the cyclopropane ring involved in the skeleton of 6.

Keywords

Hrčak ID:

136903

URI

https://hrcak.srce.hr/136903

Publication date:

2.7.1994.

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