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NMR Studies and Crystal Structure Determinations of CF3 Group-containing Bicyclic Phenolates

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NMR Studies and Crystal Structure Determinations of CF

3

Group-containing Bicyclic Phenolates

Constantin Mamata, Helmut Reinkeb, and Peter Langerb,c

aInstitut f¨ur Radiopharmazie am Forschungszentrum Dresden-Rossendorf e. V., Postfach 51 01 19, D-01314 Dresden, Germany

bInstitut f¨ur Chemie der Universit¨at Rostock, Albert-Einstein-Straße 3a, D-18059 Rostock, Germany

cLeibniz Institut f¨ur Katalyse e. V. an der Universit¨at Rostock, Albert-Einstein-Straße 29a, D-18059 Rostock, Germany

Reprint requests to Dr. Constantin Mamat. Fax: +49 (0)351 260 3232. E-mail: c.mamat@fzd.de Z. Naturforsch.2009,64b,423 – 426; received December 5, 2008

Three new CF3-substituted bicyclic salicylate derivatives were synthesized by the TiCl4-mediated cyclization of trifluoromethyl-containing ketones with 1,3-bis(silyl enol ethers) and characterized by NMR and IR, spectroscopy, mass spectrometry and elemental analysis. The crystal structures of the bicyclic derivatives have been determined by single crystal X-ray analysis. All structures exhibit hydrogen bonding.

Key words:19F NMR Spectroscopy, X-Ray Crystallography, CF3Salicylates, [3+3] Cyclization

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