A new and efficient method for the ''one-step'' synthesis of (Z)-1,2-bis(benzodithienyl)ethenes has been set up using double Suzuki coupling between stereochemically defined diboronic acid esters and 2-iodo- benzodithiophene. The new Z-alkenes thus obtained can be easily and efficiently photochemically cyclised to the newly substituted tetrathia[7]helicenes.
A Novel and Efficient Approach to (Z)-1,2-Bis(benzodithienyl)ethene Precursor of Tetrathia[7]helicenes / C. Baldoli, A. Bossi, C. Giannini, E. Licandro, S. Maiorana, D. Perdicchia, M. Schiavo. - In: SYNLETT. - ISSN 0936-5214. - 2005:7(2005), pp. 1137-1141.
A Novel and Efficient Approach to (Z)-1,2-Bis(benzodithienyl)ethene Precursor of Tetrathia[7]helicenes
C. Giannini;E. Licandro;S. Maiorana;D. Perdicchia;
2005
Abstract
A new and efficient method for the ''one-step'' synthesis of (Z)-1,2-bis(benzodithienyl)ethenes has been set up using double Suzuki coupling between stereochemically defined diboronic acid esters and 2-iodo- benzodithiophene. The new Z-alkenes thus obtained can be easily and efficiently photochemically cyclised to the newly substituted tetrathia[7]helicenes.
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