A. Ahmed, B., J. Mohammed, S. (2010). Synthesis and Characterisation of Some New Substituted ( , -diphenyl- -hydroxymethyl)-1,2,4-triazoles-1,3,4-oxadiazoles and 1,3,4-thiadiazoles. , 0(38), 373-384.
Badie A. Ahmed; Salim J. Mohammed. "Synthesis and Characterisation of Some New Substituted ( , -diphenyl- -hydroxymethyl)-1,2,4-triazoles-1,3,4-oxadiazoles and 1,3,4-thiadiazoles". , 0, 38, 2010, 373-384.
A. Ahmed, B., J. Mohammed, S. (2010). 'Synthesis and Characterisation of Some New Substituted ( , -diphenyl- -hydroxymethyl)-1,2,4-triazoles-1,3,4-oxadiazoles and 1,3,4-thiadiazoles', , 0(38), pp. 373-384.
A. Ahmed, B., J. Mohammed, S. Synthesis and Characterisation of Some New Substituted ( , -diphenyl- -hydroxymethyl)-1,2,4-triazoles-1,3,4-oxadiazoles and 1,3,4-thiadiazoles. , 2010; 0(38): 373-384.

Synthesis and Characterisation of Some New Substituted ( , -diphenyl- -hydroxymethyl)-1,2,4-triazoles-1,3,4-oxadiazoles and 1,3,4-thiadiazoles

Iraqi National Journal Of Chemistry
Article 1, Volume 0, Issue 38, 2014, Pages 373-384
Authors
Badie A. Ahmed; Salim J. Mohammed
Abstract
Abstract
Several new substituted-4-alkyl/aryl semicarbazides (2a-d) were synthesized. Subsequent ring closure of substituted (2a-d) yield 2-amino alkyl/aryl-5-substituted-1,3,4-oxadiazoles (3a-d) and substituted-1,2,4-triazoles (4a-d) under acidic and basic media respectively. Methylation of compounds (4a-d) gave substituted methoxy-1,2,4-triazoles (5a-d). The reaction of benzilic acid hydrazide (I) with formic acid gave 1-formyl-2-( , -diphenyl- -hydroxyacetyl) hydrazine (6). Refluxing of the later with phosphorus pentoxide and phosphorus pentasulfide gave oxa/thiadiazole (7 and 8) respectively. The structures of all products were elucidated by physical and Spectroscopic methods.
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