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Synfacts 2007(1): 0038-0038
DOI: 10.1055/s-2006-955673
DOI: 10.1055/s-2006-955673
Synthesis of Materials and Unnatural Products
© Georg Thieme Verlag Stuttgart · New York
Preparation of Novel Tetrathia[7]helicenes
E. Licandro, C. Rigamonti, M. T. Ticozzelli, M. Monteforte, C. Baldoli, C. Giannini, S. Maiorana*
Università degli Studi di Milano, Italy
Further Information
Publication History
Publication Date:
15 December 2006 (online)

Significance
Synthetic routes leading to functionalized tetrathia[7]helicenes have been developed. Initial formation of 3 via double Suzuki coupling is followed by functionalization and ring-closure (or with steps reversed) to give the desired helicenes in modest to good yields. Intermediate 3 could also be accessed by McMurry coupling (not shown). The physical and chemical properties of the helicenes are currently being studied, and attempts to prepare optically active samples are also underway.