A practical synthesis of 1,8-difluorofluorenone and of its (2,7)-dibromo and (2,4,5,7)-tetrabromo derivatives has been developed. Fluorinated fluorenones are the starting materials for polyhalogenated dibenzochrysenes as well as for geodesic hydrocarbons. 2,7-Dibromo-1,8-difluoro-9H-fluoren-9-one was converted to 3,14-dibromo-4,13-difluorodibenzo[g,p]chrysene through a novel strategy.

中文翻译：

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氟对芴

已开发出 1,8-二氟芴酮及其 (2,7)-二溴和 (2,4,5,7)-四溴衍生物的实用合成方法。氟化芴酮是多卤化二苯并屈和测地碳氢化合物的起始原料。2,7-Dibromo-1,8-difluoro-9 H -fluoren-9-one 通过一种新策略转化为 3,14-dibromo-4,13-difluorodibenzo[ g , p ]chrysene。