The 3,b-dialky1-2-isopropyl-4-pyrimidinones (1)-( 3) and 3,6-dimethyl-2-phenyl-4-pyrimidinone (6) were converted to the N-dealkylated 4pyrimidinones (41, (51, and ( 7) by reaction wlth sodium amide in liq. amonla.Also, these 4-pyrmidrnones (1)-( 3) and ( 6) were converted to
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Yamazaki et al. (1983) studied this question.