Palladium??Catalyzed Oligocyclizations of 2??Bromoalk??1??ene??(n+ 1),(m+ n+ 1)??diynes–Influence of Tether Lengths and Substituents on the Outcome of the Reaction ( …

…, S Schweizer, PJ Parsons, A de Meijere

Index: Tokan, Wajdi M.; Meyer, Frank E.; Schweizer, Stefan; Parsons, Philip J.; De Meijere, Armin European Journal of Organic Chemistry, 2008 , # 36 p. 6152 - 6167

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Citation Number: 7

Abstract

Abstract The outcomes and the mechanistic pathways of the palladium-catalyzed Heck-type cascade oligocyclizations of various 2-bromoalkenediynes were explored with respect to the lengths of the tethers between the multiple bonds and the nature of the substituent at the acetylenic terminus. Just like substrates containing two three-atom tethers, 2-bromotridec-1- ene-6, 13-diynes 10a, b with one three-and one four-atom tether undergo two consecutive ...