The Clar reaction of 7H-benz[de]anthracen-7-one (20) was reinvestigated as a source for C34H18 polycyclic aromatic hydrocarbons (PAH). The utilization of a ternary sodium chloride/potassium chloride/zinc chloride melt with zinc dust as reducing agent yielded tetrabenzo[a,cd,j,lm]perylene (11) (10.7% yield), dibenzo[a,cd]naphtho[1,8-jk]perylene (16) (10.2% yield), and dibenzo[a,cd]naphtho[3,2,1-lm]perylene (14) (7.4% yield) as main products. Tetrabenzo[a,cd,lm,o]perylene (26) as a minor product of the Clar reaction was purified via semi-preparative high performance liquid chromatography, and its unequivocal identification was demonstrated through NMR data and a microscale-cyclization reaction.

中文翻译：

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7H-benz[de]anthracen-7-one的Clar反应：四苯并[a,cd,lm,o]苝的分离鉴定

7H-benz[de]anthracen-7-one (20) 的 Clar 反应被重新研究为 C34H18 多环芳烃 (PAH) 的来源。利用三元氯化钠/氯化钾/氯化锌熔体和锌粉作为还原剂产生四苯并[a,cd,j,lm]苝（11）（产率10.7%），二苯并[a,cd]萘并[1] ,8-jk]苝（16）（产率10.2%）和二苯并[a,cd]萘并[3,2,1-lm]苝（14）（产率7.4%）作为主要产品。四苯并[a,cd,lm,o]perylene (26) 作为 Clar 反应的次要产物通过半制备型高效液相色谱纯化，其明确的鉴定通过 NMR 数据和微尺度环化反应得到证实。