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Bathochromic 1-amino-2(1H)-pyrimidinimines and hydrazones by substitution/dimroth rearrangement of 1-amino-2-methylthiopyrimidinium salts

✍ Scribed by Beate Riemer; Ahmed Hassoun; JÜRgen Liebscher; Peter G. Jones; Axel Chrapkowski


Book ID
112130813
Publisher
Journal of Heterocyclic Chemistry
Year
1993
Tongue
English
Weight
409 KB
Volume
30
Category
Article
ISSN
0022-152X

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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