Studies on the niobium pentachloride-mediated nucleophilic additions to an enantiopure cyclic N-acyliminium ion derived from (S)-malic acid
摘要：
The nucleophilic addition of several nucleophiles (allyltrimethylsilane, silyl enol ether from aceto...
doi：
10.1590/S0103-50532005000400007
作 者：
Rocha, Rafael O.;Uni...
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Journal of the Brazilian Chemical Society
Platinum complexes with non-symmetric fluorodithioethers: Molecular structures of cis-[PtCl2(CH3SCH2CH 2SRf)] (Rf = C6F5, C6H4F-3) and trans-[PtCl2(CH3SCH2CH 2SC6F5)2]
摘要：
This paper describes the synthesis and characterization of the non-symmetric ligands CH3SCH2CH2SRf (...
doi：
10.1590/S0103-50532005000700014
作 者：
Berns, Sylvain;Torre...
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Journal of the Brazilian Chemical Society
Pb 2+, Cu 2+and Cd 2+ ions uptake by Brazilian phosphate rocks
摘要：
In this work Brazilian phosphate rocks, PRs, were used to reduce Pb2+, Cu2+ and Cd2+ concentrations ...
doi：
10.1590/S0103-50532005000100010
作 者：
Bertolino, Luíz C.;M...
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Journal of the Brazilian Chemical Society
The preparation of a 10-membered ring macrolactone by selective ozonolysis and the role of the dihydropyran-substituent on the MCPBA-oxidation reaction profile of beta-lapachone phenazines
摘要：
The benzophenazine from b-lapachone was submitted to ozonolysis under conditions that selectively fu...
doi：
10.1590/S0103-50532005000600027
作 者：
Cioletti, Alessandra...
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Journal of the Brazilian Chemical Society
Electrochemical and electrochromic properties of poly(4,4" dimethoxy 3'-methyl 2,2':5',2" terthiophene)
摘要：
This work describes the electrochemical, spectroelectrochemical and electrochromic properties of pol...
doi：
10.1590/S0103-50532005000500009
作 者：
Santos, Marcos J. L....
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Journal of the Brazilian Chemical Society
Preparation of phenazine N5,N10-dioxides: Effects of benzofuroxan substituents in the outcome of their expansion reaction with phenolates
摘要：
The mesomeric effects of the benzofuroxan substituent in the preparation of phenazine N5,N10-dioxide...
doi：
10.1590/S0103-50532005000700030
作 者：
Cerecetto, Hugo;Lava...
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Journal of the Brazilian Chemical Society
Development of a Supercritical Fluid Extraction method for simultaneous determination of organophosphorus, organohalogen, organonitrogen and pyretroids pesticides in fruit and vegetables and its comparison with a conventional method by GC-ECD and GC-MS
摘要：
The aim of this paper was to apply a multiresidue method using Supercritical Fluid Extraction (SFE) ...
doi：
10.1590/S0103-50532005000600022
作 者：
Universidade Estadua...
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Journal of the Brazilian Chemical Society
New catalysts based on silicon carbide support for improvements in the sulfur recovery. Silicon carbide as support for the selective H2S oxidation
摘要：
The NiS2 and Fe2O3 active phases supported on medium surface area b-silicon carbide (SiC) showed hig...
doi：
10.1590/S0103-50532005000200012
作 者：
Pham-Huu, Cuong;Nhut...
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Journal of the Brazilian Chemical Society
Multicommutated flow system for spectrophotometric L(+)lactate determination in alcoholic fermented sugar cane juice using enzymatic reaction
摘要：
A multicommutation flow system for the spectrophotometric determination of L(+)lactate in alcohol fe...
doi：
10.1590/S0103-50532005000100007
作 者：
Kronka, Eloisa A. Mo...
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Journal of the Brazilian Chemical Society
Determination of Cd, Pb and Ni by square wave stripping voltammetry in particulate matter collected in workplace atmosphere of some Brazilian industrial foundries
摘要：
The concentration of Cd, Pb and Ni in atmospheric particulate matter collected in the workplace of t...
doi：
10.1590/S0103-50532005000500019
作 者：
Masini, Jorge C.;Lic...
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Journal of the Brazilian Chemical Society
