The reduction of some fused pyrimidin-4(1H)- and -4(3H)-ones with sodium borohydride and with lithium aluminium hydride is described. When N-phenyl substituents are present a specific ring-opening reaction occurs.
W. J. Irwin, J. Chem. Soc., Perkin Trans. 1, 1972, 353 DOI: 10.1039/P19720000353
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