Abstract A simple method for the synthesis of the title compounds by an efficient in-situ reduction and cyclization reactions of aromatic aldehydes, tert-butyl 2,4-dioxopiperidine-1-carboxylate and 5-nitro-1H-indazole or 6-nitro-1H-indazole was developed.

中文翻译：

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吲唑并[5,4-b][1,6]萘啶和吲唑并[6,7-b][1,6]萘啶衍生物的合成

摘要 通过芳香醛、2,4-二氧代哌啶-1-羧酸叔丁酯和5-硝基-1H-吲唑或6-硝基-开发了 1H-吲唑。