33238-93-6Relevant academic research and scientific papers
[3 + 2]-Cycloadditions of Azomethine Imines and Ynolates
Winterton, Sarah E.,Ready, Joseph M.
supporting information, p. 2608 - 2611 (2016/06/15)
A novel [3 + 2]-cycloaddition between azomethine imines and lithium ynolates is described to synthesize bicyclic pyrazolidinones. These bicyclic pyrazolidinones are versatile intermediates to form β-amino acids and monocyclic pyrazolidinones. High diaster
Alkoxypyrazoles and the process for their preparation
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Page/Page column 49; 55, (2010/03/02)
The present invention relates to a alkoxypyrazoles preparation process, and new alkoxypyrazole compounds.
A simple approach to pyrazol-3-ones via diazenes
Burja, Bojan,Ko?evar, Marijan,Polanc, Slovenko
experimental part, p. 8690 - 8696 (2009/12/26)
An efficient entry into pyrazol-3-ones is described starting from propenoic acids that were first transformed into the corresponding hydrazides. Oxidation of the hydrazides gave the diazenes and the latter cyclized to pyrazol-3-ones on treatment with ZrCl4. The methoxycarbonyl protection of the N-1 of the pyrazolone derivatives was easily removed under mild reaction conditions.
4-Arylation of 3-alkoxypyrazoles
Guillou, Sandrine,Nesmes, Olivier,Ermolenko, Mikhail S.,Janin, Yves L.
experimental part, p. 3529 - 3535 (2009/09/05)
Following the study of the alkoxypyrazoles nitrogen's reactivity toward arylation or alkylation reactions, we report here our results on the introduction of various aryl groups on carbon 4 position of 3-alkoxypyrazoles. This was achieved from the correspo
Synthesis and biological activity of N,N-dialkylaminoalkyl-substituted bisindolyl and diphenyl pyrazolone derivatives
Brana, Miguel F.,Gradillas, Ana,Ovalles, Angel G.,Lopez, Berta,Acero, Nuria,Llinares, Francisco,Mingarro, Dolores Munoz
, p. 9 - 16 (2007/10/03)
New compounds, structurally related to the potent protein kinase C inhibitor staurosporine, with a bisindolylpyrazolone framework and substituted on the pyrazolone nitrogens with N,N-dialkylaminoalkyl side chain, were synthesized and evaluated for growth-
Pyrazole antimicrobial agents
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, (2008/06/13)
The present invention provides pyrazole and pyrazolone derivatives. Preferred compounds of the invention are useful as RNA polymerase inhibitors. Further preferred compounds of the invention are useful as antimicrobial agents.
N-(heterocycle)alkyl)-1H-pyrazole-1-alkanamides as antiarrhythmic agents, compositions and use
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, (2008/06/13)
N-[(heterocycle)alkyl]-3,4 (or 4,5)-diaryl-1H-pyrazole-1-acetamides and pyrazole-1-propanamides, useful for treating cardiac arrhythmias in mammals, are prepared by reacting a lower-alkyl ester of pyrazole-1-acetic or propanoic acid with an appropriate (heterocycle-alkyl) amine or by reacting a pyrazole-1-acetic or propanoic acid with an appropriate (heterocycle-alkyl)amine.
1H-pyrazole-1-alkanamides, antiarrhythmic compositions and use
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, (2008/06/13)
N-[(disubstituted amino)alkyl]-3,4 (or 4,5)-diaryl-1H-pyrazole-1-acetamides and pyrazole-1-propanamides, useful for treating cardiac arrhythmias in mammals, are prepared by reacting a lower-alkyl ester of pyrazole-1-acetic or propanoic acid with an appropriate diamine or by reacting a lower-alkyl ester of a pyrazole-1-acetic or propanoic acid with an ω-aminoalkanol, followed by activation of the alcohol and displacement by an appropriate amine.
REACTIONS OF DIPHENYLCYCLOPROPENONE WITH HYDRAZINE DERIVATIVES: FORMATION OF PYRAZOLONE DERIVATIVES VIA 3-AMINOCINNAMOHYDRAZIDES
Toda, Takashi,Yoshida, Masaaki,Katayama, Tetsuo,Minabe, Masahiro
, p. 79 - 82 (2007/10/02)
Reactions of diphenylcyclopropenone (1) with hydrazine or phenylhydrazine gave ring opening products (4,5-diphenylpyrazolones, 3) via 3-aminocinnamohydrazide derivatives (4).However, hydrazones (2) were obtained, in general, with 1 and hydrazine derivativ
