Zobrazeno 1 - 10 of 12 pro vyhledávání: '"Mattos,Marcio C. S. de"'
1
Akademický článek
N-halossacarinas: reagentes úteis (e alternativos) em síntese orgânica
Autor: Souza Soraia P. L. de, Silva Joaquim F. M. da, Mattos Marcio C. S. de
Publikováno v: Química Nova, Vol 29, Iss 5, Pp 1061-1064 (2006)
N-halosaccharins proved to be useful and alternative reagents for diverse organic transformations, such as halogenation of aromatic compounds, benzylic and alpha-carbonylic positions, cohalogenation of alkenes, oxidation of secondary alcohols, etc. T
Externí odkaz: https://doaj.org/article/42d1935afdec403d8df3d1d24f070f36
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2
Akademický článek
N-Chloro and N-bromosaccharins: valuable reagents for halogenation of electron rich aromatics and cohalogenation of alkenes
Autor: Souza Soraia P. L. de, Silva Joaquim Fernando M. da, Mattos Marcio C. S. de
Publikováno v: Journal of the Brazilian Chemical Society, Vol 14, Iss 5, Pp 832-835 (2003)
N-Chloro- and N-bromosaccharins react with electron rich aromatic compounds (anisole, acetanilide, N,N-dimethylaniline) producing halogenated compounds. The reaction with N-bromosaccharin gives para- substituted compounds only, whereas N-chlorosaccha
Externí odkaz: https://doaj.org/article/4b16390cedd44ae9b644d03d5d2c76bb
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3
Akademický článek
Trichloroisocyanuric Acid: An Alternate Green Route for the Transformation of Alkenes into Epoxides
Autor: Wengert Mira, Sanseverino Antonio M., Mattos Marcio C. S. de
Publikováno v: Journal of the Brazilian Chemical Society, Vol 13, Iss 5, Pp 700-703 (2002)
The preparation of epoxides is efficiently achieved in mild conditions by reaction of alkenes with trichloroisocyanuric acid in aqueous acetone followed by treatment of the resulting chlorohydrin with aqueous KOH in ether / pentane.
Externí odkaz: https://doaj.org/article/be3c3d014e3c4efdbb41af222155588b
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4
Akademický článek
Coiodação de alquenos com nucleófilos oxigenados: reações intermoleculares
Autor: Sanseverino Antonio Manzolillo, Silva Flavia Martins da, Jones Jr. Joel, Mattos Marcio C. S. de
Publikováno v: Química Nova, Vol 24, Iss 5, Pp 637-645 (2001)
A review on the electrophilic addition of iodine to alkenes in the presence of oxygen containing nucleophiles (cohalogenation reaction) is presented. The intermolecular reactions are discussed with emphasis in methods of reaction and synthetic applic
Externí odkaz: https://doaj.org/article/145dad9a43f944aab19c8e2533952ece
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5
Akademický článek
Cohalogenation of limonene, carvomenthene and related unsaturated monoterpenic alcohols
Autor: Sanseverino Antonio M., Silva Flavia M. da, Jones Jr Joel, Mattos Marcio C. S. de
Publikováno v: Journal of the Brazilian Chemical Society, Vol 11, Iss 4, Pp 381-386 (2000)
Cohalogenation of (R)-limonene and (R)-carvomenthene with I2/H2O/Cu(OAc)2·H 2O in aqueous dioxane followed by base treatment produced stereospecifically the corresponding trans-epoxides. Same methodology of cohalogenation applied to related monoterp
Externí odkaz: https://doaj.org/article/ffb228a19a8340938a5b29065c502098
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6
Akademický článek
An environmentally friendly preparation of iodohydrins from alkenes mediated by clay-minerals
Autor: Villegas Raul A. S, Aguiar Mônica R. M. P. de, Mattos Marcio C. S. de, Guarino Alcides W. S, Barbosa Lilian M, Assumpção Luiz Carlos F. N
Publikováno v: Journal of the Brazilian Chemical Society, Vol 15, Iss 1, Pp 150-152 (2004)
Iodohydrins are useful intermediates in organic synthesis for the preparation of epoxides. Herein is reported the preparation of iodohydrins in good yields by the reaction of alkenes (ciclohexene, styrene, a-methylstyrene, and 1-octene) with iodine a
Externí odkaz: https://doaj.org/article/88d500da715549d78f09e58164df9113
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7
Appel Reaction of Carboxylic Acids with Tribromoisocyanuric Acid/Triphenylphosphine: a Mild and Acid-Free Preparation of Esters and Amides
Autor: Sindra,Haryadylla da Cunha, Mattos,Marcio C. S. de
Publikováno v: Journal of the Brazilian Chemical Society, Volume: 27, Issue: 6, Pages: 1129-1136, Published: JUN 2016
Journal of the Brazilian Chemical Society v.27 n.6 2016
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
A facile and efficient method for esterification and amidation of carboxylic acids under neutral conditions has been developed. Esters and amides can be prepared by reacting a carboxylic acid (1 mmol) with tribromoisocyanuric acid (0.37 mmol) and tri
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::05c0d2bf5758d5cf974f3c3e9cd45c34
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532016000601129&lng=en&tlng=en
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8
The use of tribromoisocyanuric acid to distinguish among primary, secondary and tertiary alcohols
Autor: Crespo, Lívia T. C., Mattos, Marcio C. S. de, Esteves, Pierre M.
Publikováno v: Química Nova v.36 n.2 2013
Química Nova
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Química Nova, Volume: 36, Issue: 2, Pages: 320-323, Published: 2013
Primary, secondary and tertiary alcohols can be easily distinguished due to their reactivity towards tribromoisocyanuric acid (TBCA). The test is performed by adding TBCA to the alcohol in a test tube heated in a boiling water bath. Orange color deve
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::0c74e28bebf4d5cb2058478197ee0625
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000200019
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9
N-halossacarinas: reagentes úteis (e alternativos) em síntese orgânica
Autor: Souza, Soraia P. L. de, Silva, Joaquim F. M. da, Mattos, Marcio C. S. de
Publikováno v: Química Nova, Volume: 29, Issue: 5, Pages: 1061-1064, Published: OCT 2006
N-halosaccharins proved to be useful and alternative reagents for diverse organic transformations, such as halogenation of aromatic compounds, benzylic and alpha-carbonylic positions, cohalogenation of alkenes, oxidation of secondary alcohols, etc. T
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______608::399d6e1fc954ecfcca6490e824dbdd03
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422006000500028&lng=en&tlng=en
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10
Characterization of natural Brazilian clays and their utilization as catalysts in the coiodination of alkenes with water and alcohols
Autor: Villegas,Raul A. S., Espírito Santo Jr.,José Luiz do, Mattos,Marcio C. S. de, Aguiar,Mônica R. M. P. de, Guarino,Alcides W. S.
Publikováno v: Journal of the Brazilian Chemical Society, Volume: 16, Issue: 3b, Pages: 565-570, Published: JUN 2005
Journal of the Brazilian Chemical Society v.16 n.3b 2005
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
The natural Brazilian clays F-101, F-117 and kaolin were characterized by chemical and textural analysis, XRD, and 27Al and 29Si MAS-NMR. The F-101 clay is a smectite, while F-117 is an interstratified structure with smectite, kaolinite and mica as c
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::42c7db0cf759d35e96260d4c5dfe23ea
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532005000400012&lng=en&tlng=en
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