Yıl: 2010 Cilt: 34 Sayı: 6 Sayfa Aralığı: 835 - 846 Metin Dili: İngilizce İndeks Tarihi: 29-07-2022

Synthesis and antimicrobial activities of some new 1,2,4-triazole derivatives

Öz:
The synthesis of ethyl [3-(cyanomethyl)-5-alkyl-4H -1,2,4-triazol-4-yl]carbamates (2a-d) was performed starting from ethyl 2-[ethoxy(4-(aryl)methylene]hydrazinecarboxylates (1a, 1b). The treatment of 2a with thiosemicarbazide afforded ethyl [3-[(5-amino-1,3,4-thiadiazol-2-yl)methyl]-5-(4-nitrophenyl)-4H-1,2,4- triazol-4-yl]carbamates (3a), whereas compound 2b produced 5-{[4-amino-5-(4-methylphenyl)-4H -1,2,4- triazol-3-yl]methyl}-1,3,4-thiadiazol-2-amine (3b) in the same reaction conditions. The treatment of tert - butyl 2-[2-(4-chlorophenyl)-1-ethoxyethylidene]hydrazinecarboxylate (5) with malonohydrazide or cyanoacethydrazide gave the corresponding 1,2,4-triazol-ylcarbamate derivatives (6 or 9); then the hydrolysis of these compounds resulted in the formation of 3-{[4-amino-5-(4-chlorobenzyl)-4H -1,2,4-triazol-3-yl]methyl}- 5-(4-chlorobenzyl)-4H -1,2,4-triazol-4-amine (7) and [4-amino-5-(4-chlorobenzyl)-4H -1,2,4-triazole-3-yl]acetonitrile (10), respectively. The synthesis of the Schiff base derivatives 3-(4-chlorobenzyl)-5-{[5-(4-chlorobenzyl)- 4-[(2-hydroxyphenyl-methylene)amino]-4H -1,2,4-triazol-3-yl]methyl}-N-(2-hydroxyphenylmethylene)- 4H-1,2,4-triazol-4-amine (8), and (5-(4-chlorobenzyl)-4-{[(2,6-dichlorophenyl)methylene]amino}-4H -1,2,4- triazol-3-yl)acetonitrile (12) was performed from the reaction of compounds 7 and 10 with salicyl aldehyde (for 8) or 2,6-dichlorobenzaldehyde (for 12), respectively. The treatment of compounds 5 or 10 with thiosemicarbazide gave 5-{[4-amino-5-(4-chlorobenzyl)-4H -1,2,4-triazol-3-yl]methyl}-1,3,4-thiadiazol- 2-amine (11). All the newly synthesized compounds were screened for their antimicrobial activities and were found to possess good or moderate antimicrobial activity.
Anahtar Kelime:

Konular: Mühendislik, Kimya
Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık
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APA BAYRAK H, DEMİRBAŞ A, BEKTAŞ H, Alpay Karaoğlu Ş, DEMİRBAŞ N (2010). Synthesis and antimicrobial activities of some new 1,2,4-triazole derivatives. , 835 - 846.
Chicago BAYRAK Hacer,DEMİRBAŞ Ahmet,BEKTAŞ Hakan,Alpay Karaoğlu Şengül,DEMİRBAŞ NESLİHAN Synthesis and antimicrobial activities of some new 1,2,4-triazole derivatives. (2010): 835 - 846.
MLA BAYRAK Hacer,DEMİRBAŞ Ahmet,BEKTAŞ Hakan,Alpay Karaoğlu Şengül,DEMİRBAŞ NESLİHAN Synthesis and antimicrobial activities of some new 1,2,4-triazole derivatives. , 2010, ss.835 - 846.
AMA BAYRAK H,DEMİRBAŞ A,BEKTAŞ H,Alpay Karaoğlu Ş,DEMİRBAŞ N Synthesis and antimicrobial activities of some new 1,2,4-triazole derivatives. . 2010; 835 - 846.
Vancouver BAYRAK H,DEMİRBAŞ A,BEKTAŞ H,Alpay Karaoğlu Ş,DEMİRBAŞ N Synthesis and antimicrobial activities of some new 1,2,4-triazole derivatives. . 2010; 835 - 846.
IEEE BAYRAK H,DEMİRBAŞ A,BEKTAŞ H,Alpay Karaoğlu Ş,DEMİRBAŞ N "Synthesis and antimicrobial activities of some new 1,2,4-triazole derivatives." , ss.835 - 846, 2010.
ISNAD BAYRAK, Hacer vd. "Synthesis and antimicrobial activities of some new 1,2,4-triazole derivatives". (2010), 835-846.
APA BAYRAK H, DEMİRBAŞ A, BEKTAŞ H, Alpay Karaoğlu Ş, DEMİRBAŞ N (2010). Synthesis and antimicrobial activities of some new 1,2,4-triazole derivatives. Turkish Journal of Chemistry, 34(6), 835 - 846.
Chicago BAYRAK Hacer,DEMİRBAŞ Ahmet,BEKTAŞ Hakan,Alpay Karaoğlu Şengül,DEMİRBAŞ NESLİHAN Synthesis and antimicrobial activities of some new 1,2,4-triazole derivatives. Turkish Journal of Chemistry 34, no.6 (2010): 835 - 846.
MLA BAYRAK Hacer,DEMİRBAŞ Ahmet,BEKTAŞ Hakan,Alpay Karaoğlu Şengül,DEMİRBAŞ NESLİHAN Synthesis and antimicrobial activities of some new 1,2,4-triazole derivatives. Turkish Journal of Chemistry, vol.34, no.6, 2010, ss.835 - 846.
AMA BAYRAK H,DEMİRBAŞ A,BEKTAŞ H,Alpay Karaoğlu Ş,DEMİRBAŞ N Synthesis and antimicrobial activities of some new 1,2,4-triazole derivatives. Turkish Journal of Chemistry. 2010; 34(6): 835 - 846.
Vancouver BAYRAK H,DEMİRBAŞ A,BEKTAŞ H,Alpay Karaoğlu Ş,DEMİRBAŞ N Synthesis and antimicrobial activities of some new 1,2,4-triazole derivatives. Turkish Journal of Chemistry. 2010; 34(6): 835 - 846.
IEEE BAYRAK H,DEMİRBAŞ A,BEKTAŞ H,Alpay Karaoğlu Ş,DEMİRBAŞ N "Synthesis and antimicrobial activities of some new 1,2,4-triazole derivatives." Turkish Journal of Chemistry, 34, ss.835 - 846, 2010.
ISNAD BAYRAK, Hacer vd. "Synthesis and antimicrobial activities of some new 1,2,4-triazole derivatives". Turkish Journal of Chemistry 34/6 (2010), 835-846.