Výsledky vyhledávání - "Jimena Estela Díaz"

Recent Applications of Microwave‐Assisted Cyclizations Promoted by Polyphosphoric Acid Esters to the Synthesis of Nitrogen Heterocycles

Autor: Jimena Estela Díaz, Maria C. Mollo, Juan A. Bisceglia, Liliana R. Orelli, Nadia Gruber

Publikováno v: Synthetic Approaches to Nonaromatic Nitrogen Heterocycles

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e41111a3da79b490088788e6de8e8b4f
https://doi.org/10.1002/9781119708841.ch20

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Synthesis of dihydroquinazolines from 2-aminobenzylamine: N 3 -aryl derivatives with electron-withdrawing groups

Autor: Liliana R. Orelli, Nadia Gruber, Jimena Estela Díaz

Publikováno v: Beilstein Journal of Organic Chemistry
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Beilstein Journal of Organic Chemistry, Vol 14, Iss 1, Pp 2510-2519 (2018)

The sequential N-functionalization of 2-aminobenzylamine (2-ABA) followed by cyclodehydration allowed for a straightforward and efficient synthesis of 3,4-dihydroquinazolines with N-aryl substituents bearing electron-withdrawing groups. The sequence

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89b7cc0eccef7abbf12e9313619659af
http://europepmc.org/articles/PMC6178284

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Syntheses of 3,4- and 1,4-dihydroquinazolines from 2-aminobenzylamine

Autor: Liliana R. Orelli, Nadia Gruber, Jimena Estela Díaz, Silvia Ranieri

Publikováno v: Beilstein Journal of Organic Chemistry, Vol 13, Iss 1, Pp 1470-1477 (2017)
Beilstein Journal of Organic Chemistry
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

A straightforward strategy for the synthesis of dihydroquinazolines is presented, which allows for the preparation of 3,4- and 1,4-dihydroquinazolines with different substitution patterns from 2-aminobenzylamine (2-ABA) as common precursor. The requi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3503e20fd591dfcfbb546d1e30e477e7
https://doaj.org/article/c3834671f5b44f71b4b83845605e28e8

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Conformational and Stereodynamic Behavior of Five to Seven-membered 1-Aryl-2-iminoazacycloalkanes

Autor: Michele Mancinelli, Jimena Estela Díaz, Andrea Mazzanti, Liliana R. Orelli

Publikováno v: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
ACS Omega, Vol 4, Iss 3, Pp 4712-4720 (2019)
ACS Omega

The stereodynamic behavior of 1-arylpyrrolidin-2-imines, having a C aryl -N stereogenic axis, has been studied by means of dynamic nuclear magnetic resonance and density functional theory calculations, evaluating the steric effect of ortho-aryl subst

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae17c2fd5a5c46f13e173a49ad97a09a

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Amidinoquinoxaline N-oxides as novel spin traps

Autor: Pierluigi Stipa, Jimena Estela Díaz, Nadia Gruber, Emilio Rubín de Celis, Lidia Leonor Piehl, María B. García, Liliana R. Orelli

Publikováno v: RSC Advances. 5:2724-2731

A novel type of spin traps 1 derived from the pyrimidoquinoxaline N-oxide heterocyclic core is reported. EPR technique was used to evaluate their ability to trap methyl radicals generated in a Fenton reaction in the presence of DMSO. All the synthesi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b38e4ef5655bac8127e3bd5fbd884a94
https://doi.org/10.1039/c4ra14335c

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ChemInform Abstract: 1,n-Diamines. Part 3. Micowave-Assisted Synthesis of N-Acyl-N′-arylhexahydropyrimidines and Hexahydro-1,3-diazepines

Autor: Liliana R. Orelli, Juan A. Bisceglia, Romina A. Torres, Jimena Estela Díaz

Publikováno v: ChemInform. 43

Cyclodehydration of aminoamides with formaldehyde affords the title systems as mixtures of E/Z-isomers due to a hindered rotation about the N—CO bond.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a9a454fae0e1c9db62a44c87ffbd5745
https://doi.org/10.1002/chin.201205188

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1,n-Diamines. Part 3: Microwave-assisted synthesis of N-acyl-N′-arylhexahydropyrimidines and hexahydro-1,3-diazepines

Autor: Juan A. Bisceglia, Jimena Estela Díaz, Romina A. Torres, Liliana R. Orelli

In this Letter we present a method for the synthesis of N-acyl-N´-arylhexahydropyrimidines 1, by ring closure of N-acyl-N´-aryl-1,3-propanediamines 3 with formaldehyde. Cyclodehydrations were performed in aqueous medium under microwave irradiation,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0548e154dbb42b39fa33e55e28212b3f
http://www.sciencedirect.com/science/article/pii/S004040391101269X

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Conformation and stereodynamics of 1,2-diaryltetrahydropyrimidine and of its five- and seven-membered ring analogs

Autor: Andrea Mazzanti, Lodovico Lunazzi, Jimena Estela Díaz, Liliana R. Orelli, Nadia Gruber

The 1-(2-nitrophenyl)-2-(2-methylphenyl)-1,4,5,6-tetrahydropyrimidine and its five- and seven-membered ring analogs were synthesized and their conformational properties investigated by low temperature NMR spectroscopy and DFT theoretical calculations

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9cffb3eae292f0d6831cd1ae91e4aa28
http://hdl.handle.net/11585/112358

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New atropisomers derived from amidinoquinoxaline N-oxides: Synthesis and NMR characterization

Autor: Liliana R. Orelli, María B. García, Jimena Estela Díaz

The complete 1H and 13C NMR characterization of some representative examples of five and six-membered amidinoquinoxaline N-oxides 1 with dissymmetric aryl substituents and their methiodides 2 is reported. Compounds 1 were synthesized by ring closure

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e38df34d0fd695d2f01cfcefe2f0048
https://www.sciencedirect.com/science/article/abs/pii/S0022286010006496

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