Bis-silyl-enol ethers as convenient building blocks for the design and synthesis of Salicylates, Pyrones, Cyclohexenones, Pyridones and Benzophenones

10.18453/rosdok_id00000914 Bunescu, Alina Alina Bunescu http://d-nb.info/gnd/1016859198 Bis-silyl-enol ethers as convenient building blocks for the design and synthesis of Salicylates, Pyrones, Cyclohexenones, Pyridones and Benzophenones Universität Rostock 2011 540 Chemistry & allied sciences 2011 en http://purl.uni-rostock.de/rosdok/id00000914 urn:nbn:de:gbv:28-diss2011-0146-3 The present thesis describes the synthetic potential of 1,3-bis-silyl-enol ethers. They undergo regioselective cyclocondensation reactions with simple substrates providing various complex carba- and heterocycles. A new type of formal [3+3]-cyclization reaction with 2,4,6-tris(trifluoromethyl)-1,3,5-triazine is described. The mechanism was studied by the isolation of an unusual bicyclic intermediate. New and promising candidates for UV-A/B filters have been synthesized and analyzed.