ABSTRACT Recent work of our studies on the synthesis of imidazolinones and fused pyrimidinones via aza-Wittig reaction was reviewed, including highly substituted 4H-imidazolin-4-ones, 4(3H)-quinazolinones, thieno[2,3-d]pyrimidin-4(3H)-ones, thieno[2,3-d:5,4-d’] dipyrimidine-4,5(3H,6H) -diones, 7H-1,2,3-triazolo[4,5-d]pyrimidin-7-ones, 1,2,4-triazolo[5,1-b]quinazolin-9(3H)-ones and benzothieno[2,3-d]-1,2,4-triazolo[1,5-a] pyrimidin-10(3H)-ones.
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