Formation of Pyridazinium Salts by Azo C
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Petr Šimůnek; Markéta Pešková; Valerio Bertolasi; Antonín Lyčka; Vladimír Macháč
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Article
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2004
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John Wiley and Sons
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English
⚖ 167 KB
## Abstract Treatment of 3‐(2,4‐dimethoxyphenylamino)‐ and 3‐methylamino‐1‐phenylbut‐2‐en‐1‐ones with some benzenediazonium tetrafluoroborates gives, besides the usual azo coupling products [i.e., 3‐(substituted imino)‐1‐phenylbutane‐1,2‐diones 2‐(4‐substituted phenylhydrazones) and 2‐(4‐methoxyphe