Polyprenylated benzophenones with a tricyclo [4.3.1.1(3,8)]undecane skeleton from Clusia obdeltifolia
摘要：
The hexane extract of Clusia obdeltifolia trunk yielded three new polyprenylated benzophenones 7b-H-...
doi：
10.1590/S0103-50532004000400010
作 者：
Universidade Federal...
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Journal of the Brazilian Chemical Society
Reevaluation of ethanol as organic modifier for use in HPLS-RP mobile phases
摘要：
Ethanol:water mixtures have been reevaluated for use as reversed phase mobile phases. Optimization o...
doi：
10.1590/S0103-50532004000200022
作 者：
Collins, Kenneth E.;...
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期刊标题：
Journal of the Brazilian Chemical Society
A Headspace Solid Phase Microextraction (HS-SPME) method for the chromatographic determination of alkylpyrazines in cocoa samples
摘要：
A Headspace Solid Phase Microextraction (HS-SPME) procedure for isolation and determination of alkyl...
doi：
10.1590/S0103-50532004000200017
作 者：
García, Nelson H.P.;...
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期刊标题：
Journal of the Brazilian Chemical Society
An environmentally friendly preparation of iodohydrins from alkenes mediated by clay-minerals
摘要：
Iodohydrins are useful intermediates in organic synthesis for the preparation of epoxides. Herein is...
doi：
10.1590/S0103-50532004000100024
作 者：
Aguiar, Mônica R. M....
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期刊标题：
Journal of the Brazilian Chemical Society
Synthesis of guanidine from ammonium thiocyanate in solid state
摘要：
Guanidine is an important substance for modern living beings as well as for the prebiotic chemistry....
doi：
10.1590/S0103-50532004000200006
作 者：
CCE;Toppan, Rodrigo;...
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期刊标题：
Journal of the Brazilian Chemical Society
Surfactant and counter-ion distribution in styrene-butyl acrylate-acrylic acid dry latex submonolayers
摘要：
Styrene-butyl acrylate-acrylic acid latex submonolayers prepared using a non-reactive phosphate surf...
doi：
10.1590/S0103-50532004000100012
作 者：
Keslarek, Amauri Jos...
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期刊标题：
Journal of the Brazilian Chemical Society
Selective reduction of NOx by propylene over silver catalyst under oxidative conditions
摘要：
In this study, a Ag/Al2O3 and Ag/Al2O3/Cordierite catalyst was prepared by a conventional impregnati...
doi：
10.1590/S0103-50532004000400018
作 者：
Baibich, Ione M.;Uni...
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期刊标题：
Journal of the Brazilian Chemical Society
Silica sulfuric acid as an efficient and reusable reagent for crossed-aldol condensation of ketones with aromatic aldehydes under solvent-free conditions
摘要：
Aromatic aldehydes undergo crossed-aldol condensation with ketones in the presence of silica sulfuri...
doi：
10.1590/S0103-50532004000500026
作 者：
Bu-Ali Sina Universi...
作者机构：
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期刊标题：
Journal of the Brazilian Chemical Society
Determination of inorganic ions in ethanol fuel by capillary electrophoresis
摘要：
The control of the content of inorganic ions in vehicular fuels plays an important role in the engin...
doi：
10.1590/S0103-50532004000400013
作 者：
Munoz, Rodrigo A. A....
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期刊标题：
Journal of the Brazilian Chemical Society
Spectrophotometric determination of chromium in steel with 4-(2- thiazolylazo)-resorcinol (TAR) using microwave radiation
摘要：
A spectrophometric method for the determination of Cr(III) with 4-(2- thiazolylazo)-resorcinol was d...
doi：
10.1590/S0103-50532004000100025
作 者：
Costa, Antônio Celso...
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期刊标题：
Journal of the Brazilian Chemical Society
