1997
DOI: 10.1590/s0100-40421997000200008
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Estereosseletividade em reações eletródicas

Abstract: Recebido em 15/12/95; aceito em 11/12/96 STEREOSELECTIVITY IN ELECTRODIC REACTIONS. This review discusses the present state of the art of the stereochemistry of electrochemical reactions. The extent of asymmetric induction is progressing, but in general diastereoselectivities and enantioselectivities remain behind those from chemical synthesis. In recent years, new methodological developments have been successful. Effects that play important roles in homogeneous chemistry have been used with success. Lack of e… Show more

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Cited by 3 publications
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“…This stability could be attributed to the size of the porphyrin complex and the pore size of the zeolite, because the complex was encapsulated into the cavity and it was not possible to pass out of the pore [35]. This aspect could be very important for the selectivity and activity of the catalyst [36]. The dependence of the current peak with scan rate was not proportional suggesting a slow electron transfer process, since the supporting electrolyte should be responsible for the charge transport in this case.…”
Section: Cyclic Voltammetry Studymentioning
confidence: 99%
“…This stability could be attributed to the size of the porphyrin complex and the pore size of the zeolite, because the complex was encapsulated into the cavity and it was not possible to pass out of the pore [35]. This aspect could be very important for the selectivity and activity of the catalyst [36]. The dependence of the current peak with scan rate was not proportional suggesting a slow electron transfer process, since the supporting electrolyte should be responsible for the charge transport in this case.…”
Section: Cyclic Voltammetry Studymentioning
confidence: 99%
“…Stereochemical results are influenced by a wide variety of experimental conditions such as temperature, electrode material, the nature of the electrolyte solution, and electroactive species. In all cases reported, 18,19 the desired selectivity in an electrochemical process is achieved by using a chemical inducer of chirality and enhanced by modulating the experimental conditions of reaction. Although Mikysek et al did not report anything about the diasteroselectivity, ͑i͒ the influence of pH on the electrochemical behavior, ͑ii͒ the presence of multiple ionizable substituents in the molecule structure ͑all the nitrogen atoms in the imidazolyl-pyridine derivative͒, and ͑iii͒ the existence of an asymmetric carbon may induce selectivity in the reduction of a prochiral carbon ͑C2 in the imidazolinic moiety͒.…”
mentioning
confidence: 99%
“…Stereochemical results are influenced by a wide variety of experimental conditions such as temperature, electrode material, the nature of the electrolyte solution, and electroactive species. In all cases reported, 18,19 the desired selectivity in an electrochemical process is achieved by using a chemical inducer of chirality and enhanced by modulating the experimental conditions of reaction.…”
mentioning
confidence: 99%