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Intramolecular azo coupling in a number of 1-substituted 2-aminobenzimidazoles

✍ Scribed by S. N. Kolodyazhnaya; A. M. Simonov; N. N. Zheltikova; A. F. Pozharskii


Book ID
112331549
Publisher
Springer US
Year
1973
Tongue
English
Weight
80 KB
Volume
9
Category
Article
ISSN
0009-3122

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## 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