30020-55-4Relevant academic research and scientific papers
Synthesis, antimicrobial activity and heterocyclic ring transformation of 5-(pyrazol-5-yl)-1,3,4-oxadiazole-2(3H)-thiones
Shawali,Abdallah,Zayed
, p. 546 - 552 (2007/10/03)
The synthesis and antimicrobial activity of a series of the title thiones were examined. Reaction of such thiones with hydrazonoyl halides, resulted in ring transformation to give 5-acylhydrazono derivatives of 1,3,4-thiadiazoles. The mechanisms of the studied reactions are discussed.
1,3-Dipolar Cycloaddition Reactions of Diphenylnitrilimine with Esters of α,β-Didehydroamino acids
Shawali, Ahmad S.,Fahmi, Abdelgawad A.,Hassaneen, Hamdi M.,Abdallah, Magda A.,Abdelhamid, Hyam A.
, p. 2936 - 2944 (2007/10/02)
Diphenylnitrilimine 5 adds regioselectively to the carbon-carbon double bond of methyl β-aryl-N-benzoyl-α,β-didehydroalaninates 3 to afford the pyrazoline derivatives 6.The regiochemistry of the latter cycloadducts was evidenced chemically by their conver
On the Synthesis of Geminally Functionalized Heterocyclic Aminocarboxylic Acid Esters
Coutouli-Argyropoulou, E.,Thessalonikeos, E.
, p. 1945 - 1948 (2007/10/02)
The title compounds 5 can be easily obtained by two alternative procedures: 1,3-dipolar cycloaddition to benzamidocinnamates 3 prepared by methanolysis of the corresponding oxazolones 1 or methanolysis of the spirooxazolones 4 synthesized by 1,3-dipolar c
1,3-Dipolar Cycloadditions, 89. New Contributions to the Chemistry of Diphenylnitrilimine
Clovis, James S.,Fliege, Werner,Huisgen, Rolf
, p. 3062 - 3070 (2007/10/02)
Methyl propiolate, tetrolate, and phenylpropiolate combine with diphenylnitrilimine (1) to afford regioisomeric cycloadducts; the preferential orientation shifts in the sequence given from the pyrazole-5-carboxylic ester to the 4-carboxylic ester.Correspo
