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Synfacts 2010(10): 1132-1132  
DOI: 10.1055/s-0030-1258633
Synthesis of Materials and Unnatural Products
© Georg Thieme Verlag Stuttgart ˙ New York

One-Pot (Synthesis) Feeds Many Chemists

Contributor(s): Timothy M. Swager, Joel Batson
T. L. Tam, H. Li, F. Wei, K. J. Tan, C. Kloc, Y. M. Lam, S. G. Mhaisalkar, A. C. Grimsdale*
Nanyang Technological University, Singapore
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Publication History

Publication Date:
22 September 2010 (online)

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Significance

The strong electron-accepting properties of the benzo[1,2-c;4,5-c′]bis[1,2,5]thiadiazole (BBT) unit (4) have been widely exploited to make low bandgap donor-acceptor materials. This property is reflected in even the small oligomers 5 and 6 being reported to possess bandgaps of only 1.5 eV. Here, the authors present a one-pot synthesis of 4,8-dibromobenzo[1,2-c;4,5-c′]bis[1,2,5]thiadiazole, a convenient precursor for including the BBT unit in larger compounds/polymers, starting from the salt of the ­respective tetraaminobenzene.