Synthesis of homophthalates, 2-(arylsulfonyl)pyridines, 6-(thien-2-yl)salicylates, dibenzo[b,d]pyran-6-ones, trifluoromethyl- and fluoro-substituted biaryls by [4+2] and [3+3] cyclizations of 1,3-bis(silyloxy)-1,3-butadienes [Elektronische Ressource] / vorgelegt von Ibrar Hussain

Synthesis of Homophthalates, 2-(Arylsulfonyl)pyridines, 6-(Thien-2-yl)salicylates, Dibenzo[b,d]pyran-6-ones,Trifluoromethyl- and Fluoro-Substituted Biaryls by[4+2] and [3+3] Cyclizations of 1,3-Bis(silyloxy)-1,3-butadienes urn:nbn:de:gbv:28-diss2008-0072-2I n a u g u r a l d i s s e r t a t i o n zurErlangung des akademischen Grades doctor rerum naturalium (Dr. rer. nat.) an der Mathematisch-Naturwissenschaftlichen Fakultät derUniversität Rostock vorgelegt von Ibrar Hussain geboren am 10-05-1979 in Attock, Pakistan Rostock, 30-04-2008 iDekan : 1. Gutachter : 2. Gutachter : Tag der Promotion : ii Affectionately Dedicated to “My parents (Late), Brothers and Sisters” iiiCONTENTS Acknowledgements AbbreviationsGeneral Introduction 1 Summary 3 Synthesis of Homophthalates, 2-(Arylsulfonyl)pyridines,6-(Thien-2-yl)salicylates,Dibenzo[b,d]pyran-6-ones, Trifluoromethyl- and Fluoro-Substituted Biaryls by [4+2] and [3+3] Cyclizations of 1,3-Bis(silyloxy)-1,3-butadienes1. One-Pot Synthesis of Salicylates based on Regioselective [3+3] Cyclizations of1,3-Bis(trimethylsilyloxy)-1,3-butadienes and comparison of Regioselectivities 5 1.1. Synthesis of 1,3-bis(trimethylsilyloxy)buta-1,3-dienes 5 1.1.1. Introduction 5 1.1.2. Results and discussion 7 1.1.3. Conclusions 12 1.2. Synthesis of 2,4-Bis(trimethylsilyloxy)-1,3-pentadiene 13 1.2.1. Introduction 10 1.2.2.