The facile synthesis of 2-(2'-4-anisoylvinyl)-3-arylquinazolin-4-ones

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Ring closure reactions O 0130 Synthesis and Behavior of 2-Carboxyvinyl-6,8-dibromo-4H-3,1-benzoxazin-4-one Towards Nitrogen, Carbon and Sulfur Nucleophiles. -Title compound (III) is used as key material for the synthesis of a series of new substances with potential biological activity. -(EL-HASHASH*, M. A.; ABDEL-RAHMAN, T. M.; EL-BADRY, Y. A.; Indian J.

Syntheses of pyridine, pyrido [2,3-d]pyrimidine, coumarin, thiazolone and triazole derivatives by using 2-(1,3-benzothiazol-2-yl)ethanethioamide as starting material are described.

EgyptA novel method for the synthesis of 1,3,4-thiadiazole and 1,3,4-thiadiazine derivatives bearing a carbazole moiety is described. Carbazole was transformed into carbazole-9-thiocarbohydrazide in two steps. This compound was allowed to react with various electrophiles