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synthesis of new derivatives of 1,3,4-thiadiazole and 1,3,4-oxadiazole on cyclic imides and studying their antioxidant
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نویسنده
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al-haidari akram s. ,al-tamimi entesar o.
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منبع
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journal of medicinal and pharmaceutical chemistry research - 2021 - دوره : 3 - شماره : 7 - صفحه:508 -517
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چکیده
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The research resulted in the production of new thiadiazole derivatives and oxadiazole derivatives via the reaction of cyclic imides with chloro acetyl chloride at heat condition to give n-acetyl chloro cyclic imides (1,2). then react these compounds (1,2) with hydrazine hydrate to give n-(aceto hydrazide) cyclic imides (3,4). then, compounds (3,4) go into three routes: route one was reacting with cs2 in the presence of (koh) in ethanol at (24 hrs.) to give (n-[(2-thio-1,3,4-thiadiazolo-5-yl) methylene] cyclic imides) (5,6). route two was reacting using various aromatic carboxylic acids in the presence of (pocl3) to give (n- [{2-(subs. benzene)-1,3,4-oxadiazolo-5-yl. methylene] cyclic imides) (7-14). route three was reacting with ammonium thiocyanate in the presence of hcl in ethanol for (5 hrs.), followed cyclization in the presence of concentration (h2so4) to give (n-[(2-amino-1,3,4-thiadiazolo-5-yl) methylene] cyclic imides) (15,16). prepared compounds have been characterized by ftir, and some of them by 1h-nmr, melting point, and were studied the effects of the preparing compounds on antioxidant.
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کلیدواژه
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cyclic imides ,thiadiazole ,oxadiazole ,antioxidant
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آدرس
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baghdad university, college of science, department of chemistry, iraq, baghdad university, college of science, department of chemistry, iraq
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Authors
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