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Synfacts 2006(9): 0904-0904  
DOI: 10.1055/s-2006-942036
Synthesis of Materials and Unnatural Products
© Georg Thieme Verlag Stuttgart · New York

An Efficient One-Pot Synthesis of Spiro[fluorene-9,9′-xanthene]

Contributor(s): Timothy M. Swager, Eric L. Dane
L.-H. Xie, F. Liu, C. Tang, X.-Y. Hou, Y.-R. Hua, Q.-L. Fan, W. Huang*
Fudan University, Nanjing University, P. R. of China; National University of Singapore, Singapore
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Publication History

Publication Date:
23 August 2006 (online)

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Significance

In an attempt to make compound 1, the authors fortuitously discovered a simple one-pot procedure to prepare compound 2 with any combination of H and Br at positions 2 and 7 of the fluorene ring system. Spiro compounds like 2 are of interest because of their possible utility in blue-light-emitting materials, as well as other applications where the stability and unique properties of the spiro-linkage offer advantages. The authors performed solution- and solid-state fluorescence studies on 3, a model compound, to display its blue emission.