Chemistry of Heterocyclic Compounds p. 91 - 94 (1983)
Update date:2022-08-03
Topics:
Sedova, V. F.
Mustafina, T. Yu.
Krivopalov, V. P.
Mamaev, V. P.
The diazotation of 2-aminopyrimidines and their N-oxides in solutions with various acidities was studied.It is shown that the amino group in pyrimidine N-oxides is not diazotized in strongly acidic media and that bromination in the 5 position of the pyrimidine ring is observed in concentrated hydrobromic acid.When the reaction was carried out in moderately acidic media, it was possible to synthesize the difficult-to-obtain 2-halopyrimidine N-oxides.
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Doi:10.1039/jr9460000772
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(1982)Doi:10.1021/ja01639a035
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(1984)Doi:10.1016/S0040-4039(00)81368-4
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