König, Burkhard and Knieriem, Burkhard and Meijere, Armin de
Double-Layered 1,4-Distyrylbenzene Chromophores - Synthesis, UV and Fluorescence Spectra.
Chemische Berichte 126 (7), pp. 1643-1650.
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The reaction of [2.2]paracyclophane (1) with liquid bromine affords a 1:1 mixture of only two isomeric products, the pseudo-para 2 and pseudo-ortho tetrabromide 3. The structure of the pseudo-para isomer 2 has been determined by X-ray structure analysis. Fourfold palladium-catalyzed coupling with styrenes and with methyl acrylate converts 2 and 3 into double-layered derivatives as e.g. 6a, 7a, ...
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