A NOVEL SYNTHESIS OF PYRIDOPYRIMIDINES BY REACTION OF URACILS WITH 6-AMINOURACILS VIA PYRIMIDINE-TO-PYRIDINE TRANSFORMATION.
Reaction of 1,3-dimethyluracils with 1,3-dialkyl-6-aminouracils in basic media caused the pyrimidine-to-pyridine transformation to afford new pyridopyrimidine derivatives.A plausible mechanism for the ring transformation is offered.
Hirota, Kosaku,Kitade, Yukio,Senda, Shigeo
p. 407 - 410
(2007/10/02)
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