Abstract
Azides obtained from Baylis–Hillman adducts were treated with triphenylphosphine to give the corresponding iminophosphoranes that underwent aza-Wittig reactions with aryl isocyanates and then reacted with amines, alcohol, or phenols in the presence of catalytic amounts of sodium alkoxide or potassium carbonate to give the corresponding 2,3,5-trisubstituted pyrimidin-4(3<i>H</i>)-ones directly in good yields.
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