Improved Synthesis of 2,2‘-Dibromo-9,9‘-spirobifluorene and Its 2,2‘-Bisdonor-7,7‘-bisacceptor-Substituted Fluorescent Derivatives
- 28 July 2005
- journal article
- research article
- Published by American Chemical Society (ACS) in Organic Letters
- Vol. 7 (17) , 3717-3720
- https://doi.org/10.1021/ol0513591
Abstract
Pure 2,2‘-Dibromo-9,9‘-spirobifluorene was synthesized by a method that did not involve troublesome dibromination of 9,9‘-spirobifluorene or Sandmeyer reaction of 2,2‘-diamino-9,9‘-spirobifluorene. A series of donor−acceptor orthogonally substituted 9,9‘-spirobifluorene was subsequently prepared showing rich variation of fluorescence in solution and in solid state.Keywords
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