The reaction of 4-Amino-5-aminomethyl-2-methylpyrimidine with amidine salts
- 1 January 1973
- journal article
- Published by CSIRO Publishing in Australian Journal of Chemistry
- Vol. 26 (7) , 1599-1605
- https://doi.org/10.1071/ch9731599
Abstract
Treatment of 4-amino-5-aminomethyl-2-methylpyrimidine with formamidine salts yields not the expected dihydropyrimidopyrimidine, but rather its ring-opened hydrate, 4-amino-5-formamidomethyl-2-methylpyrimidine. Other workers had previously prepared the latter compound by other methods, but had assigned a wrong structure. The present structure determination is based mainly on i.r., N.M.R., and mass spectrometric analysis, as well as examination of the corresponding acetamido series. Mass spectra include a noteworthy fragmentation process, expulsion of neutral, even-electron NH.Keywords
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