الفهرس 
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Abstract
This work is planned to study the reactivity of some electron rich compounds towards some selective electron poor compounds.The reaction of N-imidoylthioureas with 2-(1,3-dioxoindan-2-ylidene)malononitrile in absolute ethyl acetate at reflux temperature for 10-18 h led, to the formation of 1,2,4-thiadiazoles (62-78%).The reactions of 2,3-diphenylcyclopropenone with N-imidoylthioureas were carried out in absolute ethanol at reflux temperature for 10-16 hours and led to the formation of 2,5,6-triphenyl-3(H)-pyrimidin-4-one compounds in (60-80%).The reaction of amidrazones with 2-(1,3-dioxoindan-2-ylidene)malononitrile in absolute ethyl acetate. That reaction proceeded in a few minutes to yield, 1H,1,2,4-triazoles compounds in (62-85%. The reactions of amidrazones with 1,4-dioxo-1,4-dihydronaphthalene-2,3-dicarbonitrile in absolute ethyl acetate proceeded in a few minutes to yield, 4-aryl-5-imino-3-phenyl-1H-naphtho-[2,3-f]- 1,2,4-triazepine-6,11-diones compounds (66-80%).The reaction of amidrazones with two equivalents of 1,4-benzoquinone or 1,4-naphthoquinone in absolute ethyl acetate proceeded in a few minutes to yield, benzo- and naphtho-1,2,4-triazines compounds (66-85%) and (70-86%). Reactions of amidrazones with 2,3,5,6-tetrachloro-1,4-benzoquinone as well as 2,3-dichloro-1,4-naphthoquinone. The reaction of amidrazones with 2,3,5,6-tetrachloro-1,4-benzoquinone in dry DMF led to the formation of compound 5,6-dichloro-3-phenyl-1H-indazole-4,7-dione for all amidrazones. In the same manner, the reaction of amidrazones with as 2,3-dichloro-1,4-naphthoquinone yielded solely 3-phenyl-1H-benzo[f]indazole-4,9-dione.