McLeod, Gerald L. <br/><br/>
Reaction of Several Aminopyrimidines With Formaldehyde 

 -  [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology,   1962. 
<br/><br/> /pmc/articles/PMC5327744/ 
<br/><br/> Formaldehyde has been shown to react with 2-aminopyrimidine (II) and 2-(methylamino) pyrimidine (V) at room temperature to give the corresponding methylol derivatives or the corresponding methylenebis(aminopyrimidines). The reaction of formaldehyde with 2-amino-4,6-dichloro-5-methylpyrimidine (VII) and also its failure to react with 2-(dimethylamino)pyrimidine (IX) are cited as evidence that the pyrimidine ring is not involved in the reaction. 
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