2-Amino-4-alkoxy-s-triazines which are substituted by an alkyl, aryl or aralkyl moiety in the 6-position and which are useful as pharmaceutical agents and as intermediates for herbicides, dyes and optical brighteners are prepared by reacting a dialkyl (N-cyanoimido)carbonate with an amidine salt in the presence of an inert solvent and a base.
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(2008/06/13)
PREPARATION OF SUBSTITUTED 5-PYRIMIDINECARBONITRILES AND 1,3,5-TRIAZINES FROM ALKYL N-CYANOIMIDATES
Sodium methoxide induced the cyclization of alkyl N-cyanoimidates 1 with propanedinitrile affording the 5-pyrimidinecarbonitriles 2.The reaction of 1 with methyl cyanoaetate led to the methyl 3-propenoates 7 and the 2,4-dioxo-5-pyrimidinecarbonitrile 8.An analogous cyclization of 1 with cyanamide yielded the 1,3,5-triazines 10.
Perez, Miguel A.,Soto, Jose L
p. 463 - 468
(2007/10/02)
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