Zobrazeno 1 - 10 of 10 pro vyhledávání: '"José C. Gesser"'
2
On the mechanism of the reaction between aryl acetates and hydroxylamine
Autor: Josefredo R. Pliego, José C. Gesser, Deise J. Mazera
Publikováno v: ARKIVOC, Vol 2007, Iss 15, Pp 199-214 (2007)
The reaction of aryl acetates and hydroxylamine produces O-acylhydroxylamine and N- acylhydroxylamine, the latter being essentially observed for good leaving group esters and the former for poor leaving esters. For both acylation reactions, kinetics
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cbb913de2062f359c1afea6455041da3
https://doi.org/10.3998/ark.5550190.0008.f20
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3
Reactions of N-(o-carboxybenzoyl)-L-leucine: intramolecular catalysis of amide hydrolysis and imide formation by two carboxy groups
Autor: Faruk Nome, José C. Gesser, Alvaro B. Onofrio, Antonio Carlos Joussef
Publikováno v: Journal of the Chemical Society, Perkin Transactions 2. :1863-1868
The intramolecular reactions of N-(o-carboxybenzoyl)-L-leucine (1) were studied in aqueous solution, as a function of the hydrogen ion concentration. Two competing reactions were observed: i) cyclization to form the imide N-phthaloylleucine, and ii)
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::acf585b642b9babfc2af2d5d88c7f4bb
https://doi.org/10.1039/b007047p
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5
Kinetics of the reaction of amines with 1,1,1-trichloro-4-methoxy-3-penten-2-one
Autor: Faruk Nome, César Zucco, José C. Gesser
Publikováno v: Journal of Physical Organic Chemistry. 8:97-102
The kinetics of the reaction of 1,1,1-trichloro-4-methoxy-3-penten-2-one with various aliphatic and aromatic amines was studied at 25°C in water, dimethyl sulphoxide, methanol, ethanol, chloroform, toluene and hexane. The formation of the correspond
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bbca734eb30606b44b00cf225c6597bf
https://doi.org/10.1002/poc.610080208
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6
Dual bifunctional catalysis and the α-effect in the reaction of hydroxylamine with phenylacetate
Autor: José C. Gesser, Josefredo R. Pliego, Gizelle I. Almerindo, Deise J. Mazera
Publikováno v: Journal of the Brazilian Chemical Society v.22 n.11 2011
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society, Volume: 22, Issue: 11, Pages: 2165-2170, Published: NOV 2011
The reaction of hydroxylamine with phenyl acetate was theoretically investigated to shed light on the role of catalysis and the origin of the α-effect in this system. Calculations at the B3LYP/6-311+G(2df,2p)//HF/6-31G(d) level and the solvent effec
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2540129c123fead7f86630e981c460c
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532011001100020
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7
Estratégias utilizadas no combate a resistência bacteriana
Autor: Gustavo Pozza Silveira, José C. Gesser, Faruk Nome, Hernán Terenzi, Marcus M. Sá
Publikováno v: Química Nova, Volume: 29, Issue: 4, Pages: 844-855, Published: JUL 2006
Química Nova v.29 n.4 2006
Química Nova
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
This article provides an overview on the recent achievements to combat Gram-positive bacteria and the mechanisms related to antimicrobial activity and bacterial resistance. Selected synthetic methodologies to access structurally diverse bioactive com
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::31cbd56fc0ade68555d69b9599558eb4
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422006000400037&lng=en&tlng=en
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8
The Influence of Substituents on the Tautomerism of Symmetrically Substituted 2,2'-Bis-benzimidazoles
Autor: José C. Gesser, Evandro Luiz Dall'Oglio, Marcos Caroli Rezende, César Zucco, Miguel S. B. Caro
Publikováno v: Journal of the Brazilian Chemical Society v.13 n.2 2002
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society, Volume: 13, Issue: 2, Pages: 251-259, Published: 2002
Journal of the Brazilian Chemical Society, Vol 13, Iss 2, Pp 251-259 (2002)
The tautomerism of five symmetrically substituted 2,2'-bis-benzimidazoles [5(6),5'(6')-tetramethyl- (1); 5(6),5'(6')-dimethyl-(2); 5(6),5'(6')-dichloro- (3); 5(6),5'(6')-dimethoxy- (4) and 4(7),4'(7')-dimethyl-2,2'-bis-benzimidazole (5)], was studied
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4319e44414ca115091f79448d693cd13
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000200018
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9
Reações intramoleculares como modelos não miméticos de catálise enzimática
Autor: Faruk Nome, Rosilene M. Clementin, Santiago Francisco Yunes, José C. Gesser
Publikováno v: Química Nova, Volume: 20, Issue: 6, Pages: 631-637, Published: DEC 1997
Química Nova v.20 n.6 1997
Química Nova
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
This review gives a critical idea on the importance of intramolecular reactions as models for enzymatic catalysis. Intramolecular lactonizations, ester and amide hydrolysis studies result in theories which try to explain the difference between interm
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2dff5aa78b93caf339ceb6c2501ba962
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40421997000600011&lng=en&tlng=en
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10
Mechanism of intramolecular catalysis in the hydrolysis of alkyl monoesters of 1,8-naphthalic acid
Autor: Santiago Francisco Yunes, José C. Gesser, Marcelo F. Lima, Faruk Nome, Haidi D. Fiedler, Marcus M. Sá, Bruno S. Souza
Publikováno v: Organic & Biomolecular Chemistry. 9:6163
Hydrolysis of alkyl 1,8-naphthalic acid monoesters 1a-d is subject to highly efficient intramolecular nucleophilic catalysis by the neighboring COOH group. The reactivity for the COOH reaction depends on the leaving group pK(a), with values of β(LG)
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b351bfeae826c946ea24455d987f8e1
https://doi.org/10.1039/c1ob05574g
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