Littérature scientifique sur le sujet « Pyrrolo[3,4 c]pyrazole »
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Articles de revues sur le sujet "Pyrrolo[3,4 c]pyrazole":
Thorimbert, Serge, Candice Botuha et Kevin Passador. « ‘Heteroaromatic Rings of the Future’ : Exploration of Unconquered Chemical Space ». Synthesis 51, no 02 (7 novembre 2018) : 384–98. http://dx.doi.org/10.1055/s-0037-1611279.
Patole, Sandip S., et Shankarsing S. Rajput. « MICROWAVE ASSISTED SYNTHESIS AND MICROBIAL EVALUATION OF -2H-PYRROLO [2, 3-C : 5, 4 C'] DIPYRAZOLE-2, 5 (7H)-BIS-CARBOTHIOAMIDE DERIVATIVES ». Journal of Advanced Scientific Research 13, no 01 (10 février 2022) : 135–46. http://dx.doi.org/10.55218/jasr.202213114.
Perrin, Monique, Alain Thozet, Pilar Cabildo, Rosa Ma Claramunt, Eduard Valenti et José Elguero. « Molecular structure and tautomerism of 3,5-bis(4-methylpyrazol-1-yl)-4-methylpyrazole ». Canadian Journal of Chemistry 71, no 9 (1 septembre 1993) : 1443–49. http://dx.doi.org/10.1139/v93-186.
Das, Joydip. « Novel N-pyrimidin-4-yl-3-amino-pyrrolo [3, 4-C] pyrazole derivatives as PKC kinase inhibitors : a patent evaluation of US2015099743 (A1) ». Expert Opinion on Therapeutic Patents 26, no 4 (14 décembre 2015) : 523–28. http://dx.doi.org/10.1517/13543776.2015.1124088.
Avasthi, Kamlakar, Lakshmi Shukla, Ruchir Kant et Krishnan Ravikumar. « Folded conformations due to arene interactions in dissymmetric and symmetric butylidene-linker models based on pyrazolo[3,4-d]pyrimidine, purine and 7-deazapurine ». Acta Crystallographica Section C Structural Chemistry 70, no 6 (9 mai 2014) : 555–61. http://dx.doi.org/10.1107/s2053229614009449.
Mague, Joel T., Shaaban K. Mohamed, Mehmet Akkurt, Talaat I. El-Emary et Mustafa R. Albayati. « Crystal structure of 3-methyl-1-phenyl-5-(1H-pyrrol-1-yl)-1H-pyrazole-4-carbaldehyde ». Acta Crystallographica Section E Structure Reports Online 70, no 10 (27 septembre 2014) : o1131—o1132. http://dx.doi.org/10.1107/s1600536814020984.
Mague, Joel T., Shaaban K. Mohamed, Mehmet Akkurt, Hussein M. S. El-Kashef et Mustafa R. Albayati. « Crystal structure of (E)-4-{[2-(2,4-dinitrophenyl)hydrazin-1-ylidene]methyl}-3-methyl-1-phenyl-5-(1H-pyrrol-1-yl)-1H-pyrazole ». Acta Crystallographica Section E Structure Reports Online 70, no 12 (8 novembre 2014) : o1246—o1247. http://dx.doi.org/10.1107/s1600536814024039.
Gašparová, Renáta, Martin Moncman et Branislav Horváth. « Microwave assisted reactions of 2-[3-(Trifluoromethyl)phenyl]-4-R1-furo[3,2-b] pyrrole-5-carboxhydrazides ». Open Chemistry 6, no 2 (1 juin 2008) : 180–87. http://dx.doi.org/10.2478/s11532-008-0009-4.
KAUR, MANPREET, BALDEV SINGH et BALJIT SINGH. « 1, 3-Dipolar cycloaddition reactions : Synthesis of 5-benzyl-1-(2′,4′-dibromophenyl)-3-(4″-substituted phenyl)-3a,4,6,6a-tetrahydro-1H, 5H-pyrrolo[3,4-c]pyrazole-4,6-dione derivatives ». Journal of Chemical Sciences 125, no 6 (novembre 2013) : 1529–34. http://dx.doi.org/10.1007/s12039-013-0526-3.
Mague, Joel T., Shaaban K. Mohamed, Mehmet Akkurt, Talaat I. El-Emary et Mustafa R. Albayati. « Crystal structure of (E)-N-{[3-methyl-1-phenyl-5-(1H-pyrrol-1-yl)-1H-pyrazol-4-yl]methylidene}hydroxylamine ». Acta Crystallographica Section E Structure Reports Online 70, no 11 (31 octobre 2014) : o1216—o1217. http://dx.doi.org/10.1107/s1600536814023514.
Thèses sur le sujet "Pyrrolo[3,4 c]pyrazole":
Kuleshova, Olena. « 2-azahetaryl-3-enaminonitriles cycliques pour la synthèse d'azahétérocycles fonctionnalisés, la complexation de métaux et la conception de sondes optiques ». Thesis, Toulouse 3, 2018. http://www.theses.fr/2018TOU30127/document.
The research carried out in the course of this PhD work is centered on cyclic 2-azahetaryl-3-enaminonitrile derivatives which represent an attractive scaffold due to its high number of potential reactive sites. Regioselective functionalization of each site may give access to various structurally different Nitrogen-containing moieties featuring an azaheterocycle substituent. One first application in heterocyclic synthesis of 2-azahetaryl-2-(1-R-pyrrolidin-2-ylidene)acetonitriles, readily accessed from available and cheap starting materials, is their involvement in Knorr-type synthesis of pyrazoles (isoxazoles) where they play the role of the 1,3-dielectrophiles. Thus 4-azahetaryl-3-(ω-aminopropyl)-1H-pyrazole (isoxazole)-5-amines are formed with complete regioselectivity in good yields 50-85%. This establishes an efficient and easily reproducible two-step approach to heterocycle- substituted amino-pyrazoles from heterocyclic acetonitriles. Unprecedented subsequent transformations were carried out providing an access to regioselectively derivatized polyamino azoles, tetracyclic compounds in up to 45% overall yield and arylated pyrazoles in up to 71% yield through diazotization, followed by arylation through Suzuki-Miyaura cross-coupling or C-H activation. We illustrated the unprecedented but efficient nitrogen protection as a nitrosamine during the Pd-catalyzed cross-coupling. Also the possibility of pyrazoles C-H activation in order to get densely substituted pyrazoles was shown for the first time. We also performed the quaternarization of the nitrogen of the heterocycle to investigate the effect of a cationic moiety on the regioselectivity of the reaction of such azahetaryl-3-enaminonitrile derivatives with 1,2-binucleophiles. The increased electron demand on the heterocycle induced a reaction path shift that produced the azole ring- opened product. Derivatives of benzoxazole and benzimidazole form second way products straight away, while the one of benzothiazole undergoes the "classical" transformation pathway and subsequent nucleophilic substitution at C-2 center of benzothiazole leading to azepine cycle formation. In the case of benzoxazolyl substituted enaminonitriles under the same conditions both regioisomers are formed. Formylation reaction of 2-(benzo[d]thiazol-2-yl)-2-(pyrrolidin-2-ylidene) acetonitrile with N,N-dimethylformamide dimethyl acetal (DMF DMA), followed by further reamination and cyclization under basic conditions gave rise to pyrrolo[3,2-c]pyridine-6-imine, a compound that exhibits a high fluorescent quantum yield (Φ = 61%) and proved to be very sensitive to protonation. Both characteristics are expected to be useful to develop an unprecedented water detection test for aprotic solvents. We have demonstrated that such a fluorometric method for determining water content in DMSO presents a limit of detection of 0.068%. From other enaminonitriles reactions with DMF DMA provided either a mixture of methylated and formylated products, or only methylated products (few adducts also shown non reactivity). These observations prompted us to assume that the presence of easily accessible NH group is essential in formylation of the C-3 center of pyrrolidine allowing to propose a mechanism for this uncommon reaction. 2-Azahetaryl-2-(pyrrolidin-2-ylidene)acetonitriles and their 3-oxo-benzo- analogues were also used to create: a) visible spectrophotometric probes for Zn(II) b) water stable BF2-rigidified complexes that overcome the limitations of BODIPY-dyes and have Stokes shifts up to 9000 cm-1, emission at violet-blue range, fluorescence both in solution (Φ up to 90%) and crystalline state; c) films of polymeric composites exhibiting photovoltaic effect
Lesenyeho, Lehlogonolo Godfrey. « Palladium-catalyzed heteroannulation of 2-ARYL- 3-IODO-4-(Phenylamino)quinolines and 4-(N,N-allylphenylamino)-2-ARYL-3-iodoquinolines ». Diss., 2010. http://hdl.handle.net/10500/3970.
Chemistry
MSc. (Chemistry)
Prokofieva, Angelina. « Bioinspired oxidation reactions of phenols with dinuclear copper complexes ». Doctoral thesis, 2007. http://hdl.handle.net/11858/00-1735-0000-000D-F12D-0.
Chapitres de livres sur le sujet "Pyrrolo[3,4 c]pyrazole":
Angulwar, Jaman A. « Multicomponent Synthesis of 2-Substituted Derivatives of 6-Amino-5-Cyano-1,4-Dihydro-3-Methyl-1,4-Diphenylpyrano-[2,3-C]-Pyrazole Using Knoevenagel and Michael Addition ». Dans Modern Green Chemistry and Heterocyclic Compounds, 113–36. Series statement : Innovations in physical chemistry : monographic series : Apple Academic Press, 2020. http://dx.doi.org/10.1201/9780367276942-4.
Lambert, Tristan H. « Advances in Heterocyclic Aromatic Construction ». Dans Organic Synthesis. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780190200794.003.0068.
Taber, Douglass. « Preparation of Heteroaromatics ». Dans Organic Synthesis. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199764549.003.0068.
Actes de conférences sur le sujet "Pyrrolo[3,4 c]pyrazole":
Nikalje, Anna Pratima, Julio Seijas Vázquez, M. Pilar Vazquez-Tato et Urja Nimbalkar. « Ionic liquid [Et3NH][HSO4]catalyslyzed multicomponent synthesis of 6 amino-4-(Substituted phenyl)-3-methyl-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile ». Dans The 20th International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland : MDPI, 2016. http://dx.doi.org/10.3390/ecsoc-20-f011.