Synthesis of some substituted 1,3,4-oxadiazoles, thiadiazoles and 1,2,4-triazoles
نویسندگان
چکیده
منابع مشابه
Synthesis of oxadiazoles, thiadiazoles and triazoles derived from benzo[b]thiophene.
In this work 3-chloro-2-chlorocarbonylbenzo[b]thiophene (1) was prepared from cinnamic acid and then converted into the acid hydrazide 2. The azomethines 3a-e were prepared from the corresponding aryl aldehydes and the acid hydrazide 2. Treatment of compound 2 with formic acid gave the N-formyl acid hydrazide 4, which upon refluxing with phosphorous pentoxide or phosphorous pentasulphide in xyl...
متن کاملSynthesis and QSAR studies of thiosemicarbazides, 1,2,4-triazoles, 1,3,4- thiadiazoles and 1,3,4-oxadiazoles derivatives as potential antibacterial agents
Several new 2-(2-(4-chlorophenyl)acetyl)-N-arylhydrazinecarbothioamides 1, 5-(4-chlorobenzyl)-4-aryl-4H-1,2,4triazole-3-thiols 2, 5-(4-chlorobenzyl)-N-aryl-1,3,4-thiadiazol-2-amines 3 and 5-(4-chlorobenzyl)-N-aryl-1,3,4-oxadiazol-2amines 4 have been synthesized and screened for their antibacterial activity against gram +ve and gram –ve bacteria i.e S.aureus and E. coli. The QSAR studies of thes...
متن کاملSyntheses, Antibacterial and Antifungal Activities of Substituted-Thiazolo-1,3,4-Thiadiazoles, 1,3,4-Oxadiazoles and 1,2,4-Thiazoles
Starting from readily available 2-substituted-4-methylthiazole-5-carboxylic acid hydrazide (1), The title compounds were prepared. The reaction of compound 1 (R=CH3) with formic acid yielded 1-(formyl)-2-(2,4-dimethylthiazole-5-carboxyl) hydrazine (2). Refluxing the latter with phosphorous pentasulfide in xylene afforded compound 3, the reaction of compound 2 with phosphorous pen...
متن کاملSynthesis of novel triazoles, tetrazine, thiadiazoles and their biological activities.
An expedient synthesis of novel triazoles, tetrazine and thiadiazoles, using conveniently accessible and commercially available starting materials has been achieved. The synthesized compounds were characterized by spectroscopic and elemental analyses, and screened for their antibacterial activities against four different strains, namely E. coli, P. aeruginosa, S. aureus and B. megaterium. In pa...
متن کاملsynthesis and characterization of some macrocyclic schiff bases
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ژورنال
عنوان ژورنال: JOURNAL OF EDUCATION AND SCIENCE
سال: 2009
ISSN: 2664-2530
DOI: 10.33899/edusj.2009.57686