SYNTHESIS OF NOVEL TETRAHYDRO[4,5]IMIDAZO[2,1-b]-CHROMENO[4,3,2-de]QUINAZOLINE AND BENZOTHIAZOL-2-YLAMINOXANTHENONE DERIVATIVES

[摘要]：Some novel tetrahydroquinazoline and xanthenone derivatives were synthesized from the reaction of dimedone and Schiff base in the presence of sulfamic acid in good yields.

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