Jordan 1,3,5-Tris(5-substituted-1,3,4-oxadiazol-2-yl)benzenes were prepared by the dehydration of the corresponding hydrazides. The structures of these compounds were elucidated by IR, 1H and 13C NMR spectroscopy.
1H and 13C NMR spectroscopy of 6-aryl-substituted 3-[5-methyl-1-(4-methylphenyl)-1,2,3-triazol-4-yl]-s-triazolo[3,4-b]-1,3,4-thiadiazoles
β Scribed by Heng-Shan Dong; Bin Quan; Kun Wei; Qing-Lian Wang; Zi-Yi Zhang
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 93 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0749-1581
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β¦ Synopsis
Novel 6-aryl-3-[5-methyl-1-(4-methylphenyl)-1,2,3-triazol-4-yl]-s-triazolo[3,4-b]-1,3,4-thiadiazoles were synthesized by the condensation of 3-[5-methyl-1-(4-methylphenyl)-1,2,3-triazol-4-yl]-4amino-5-mercapto-s-triazole with various aromatic carboxylic acids in the presence of phosphorus oxychloride. The compounds were characterized by MS, IR, 1 H and 13 C NMR spectroscopy. The measured and calculated 13 C chemical shifts of the aromatic carbons were compared.
π SIMILAR VOLUMES
A series of 14 3-substituted 4-oxoquinolones with or without a substituent (methyl, ethyl) in position 1 were prepared. Literature and measured data were used to study the inΓuence of the substituent on the shifts of carbon atoms of these compounds, which are model compounds for antibacterial drugs
and 3-aminopyrazole and 3-amino-1,2,4-triazole provide convenient access to biologically relevant 3H-imidazo[1,2-b]pyrazoles and a 5H-imidazo[2,1-c][1,2,4]triazole.
5(4H)-ones / 2-Chloro-N-cyanomethyl-N-methylnicotinamide / Aromatic nucleophilic substitution A new synthesis of pyrido[3,2-f][1,4]thiazepine derivatives 3 starting with 2-chloronicotinic acid (1), methylaminoacetonitrile hydrochloride and carbon disulfide is described. As proved by a crystal struct