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Laboratory study demonstrates efficient oxidative bromination of fluorenes using sodium bromide and hydrogen peroxide, suggesting an accessible route for advanced organic materials.
A mild, simple, and efficient synthetic procedure for the preparation of 2-monobromo-, 2,7-dibromo-, and 2,2′,7,7′-tetrabromo-substituted spirobifluorene derivatives and their key intermediates, 2-monobromo- and 2,7-dibromo-substituted fluorene compounds, has been developed. The oxidative bromination of fluorene and spirobifluorene was achieved using NaBr/H2O2 as the bromine source. High conversion of the starting materials was achieved together with good selectivities under optimized reaction conditions.
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Jiang et al. (2008) studied this question.
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