Fluorination of fluorene, dibenzofuran and their open analogues with caesium fluoroxysulfate and related fluorinating reagents

J Iskra, S Stavber, M Zupan

文献索引：Iskra, Jernej; Stavber, Stojan; Zupan, Marko Collection of Czechoslovak Chemical Communications, 2008 , vol. 73, # 12 p. 1671 - 1680

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被引用次数: 8

摘要

Abstract Fluorination of fluorene (1) with caesium fluoroxysulfate (CFS), 2, 6-dichloro-1- fluoropyridinium tetrafluoroborate (FP-B800) and 1-fluoro-4-hydroxy-1, 4-diazoniabicyclo [2.2. 2]-octane bis (tetrafluoroborate)(Accufluor NFTh) occurred only on the aromatic ring in the position ortho and para to the biphenyl central bond with the ratio 2-fluoro-(2a) vs 4- fluorofluorene (2b) 1.7-2.4: 1. Regioselectivity of fluorination of both open-chain ...