81622-68-6Relevant academic research and scientific papers
THE RING CLOSURE AND REARRANGEMENT OF 1-(2-AMINO)-BENZOYL-1-METHYLHYDRAZONES OF β-DICARBONYL COMPOUNDS: ON THE FORMATION AND CRYSTAL STRUCTURE OF 3a,9a-DIHYDRO-1,3,3a,9a-TETRAMETHYL-4H-PYRAZOLOQUINOLIN-4-ONE
Gal, Melinda,Feher, Oedoen,Tihanyi, Endre,Horvath, Gyula,Jerkovich, Gyula,et all.
, p. 1567 - 1570 (1980)
The conversion of 1-(2-amino)-benzoyl-1-methylhydrazones of β-dicarbonyl compounds into heterocyclic derivatives yielded in addition to the already known type of product 2 further three novel pyrazole derivatives 3, 4, and 5.The structures of these products have been established by chemical and spectroscopic (MS) methods.The crystal structure of 5 has been determined by X-ray diffraction.
THE RING CLOSURE AND REARRANGEMENT OF N-2-AMINOBENZOYL-N-METHYLHYDRAZONES OF β-DICARBONYL COMPOUNDS
Gal, Melinda,Feher, Oedoen,Tihanyi, Endre,Horvath, Gyula,Jerkovich, Gyula
, p. 2933 - 2938 (2007/10/02)
A novel rearrangement was observed during the cyclization of N-(2-aminobenzoyl)-N-methylhydrazones of β-dicarbonyl compounds, leading to pyrazole derivatives 2, 4, and 5 depending on substituents and the reaction media.
