The Experts below are selected from a list of 221532 Experts worldwide ranked by ideXlab platform
Marijan Kocevar - One of the best experts on this subject based on the ideXlab platform.
-
a way to avoid using precious metals the application of high surface activated carbon for the synthesis of isoindoles via the diels alder reaction of 2h pyran 2 ones
Journal of Organic Chemistry, 2012Co-Authors: Marko Krivec, Martin Gazvoda, Kristof Kranjc, Slovenko Polanc, Marijan KocevarAbstract:The application of activated carbon (Darco KB) for the acceleration and direction of the transformation of various 2H-pyran-2-ones with N-substituted maleimides toward isoindole derivatives through the reaction sequence cycloaddition/elimination/dehydrogenation is described. In this reaction, the Catalyst mainly influences the dehydrogenation step, which is essential to avoid the formation of bicyclo[2.2.2]octenes as the other possible products. We found that the combination of Darco KB, as the metal-free Catalyst, and decalin, as the solvent in a closed vessel, represents the most successful conditions. A comparison of the effect of various dehydrogenation Catalysts and reaction conditions is also presented. In addition, we have proven that the aromatization occurs via a hydrogen transfer from the cyclohexadiene intermediate to the maleimide derivative (therefore producing succinimides). This transfer is facilitated by the active surface of the heterogeneous Carbon-Based Catalyst.
Marko Krivec - One of the best experts on this subject based on the ideXlab platform.
-
A Way to Avoid Using Precious Metals: The Application of High-Surface Activated Carbon for the Synthesis of Isoindoles via the Diels–Alder Reaction of 2H-Pyran-2-ones
2016Co-Authors: Marko Krivec, Martin Gazvoda, Kristof Kranjc, Slovenko Polanc, Marijan KočevarAbstract:The application of activated carbon (Darco KB) for the acceleration and direction of the transformation of various 2H-pyran-2-ones with N-substituted maleimides toward isoindole derivatives through the reaction sequence cycloaddition/elimination/dehydrogenation is described. In this reaction, the Catalyst mainly influences the dehydrogenation step, which is essential to avoid the formation of bicyclo[2.2.2]octenes as the other possible products. We found that the combination of Darco KB, as the metal-free Catalyst, and decalin, as the solvent in a closed vessel, represents the most successful conditions. A comparison of the effect of various dehydrogenation Catalysts and reaction conditions is also presented. In addition, we have proven that the aromatization occurs via a hydrogen transfer from the cyclohexadiene intermediate to the maleimide derivative (therefore producing succinimides). This transfer is facilitated by the active surface of the heterogeneous Carbon-Based Catalyst
-
a way to avoid using precious metals the application of high surface activated carbon for the synthesis of isoindoles via the diels alder reaction of 2h pyran 2 ones
Journal of Organic Chemistry, 2012Co-Authors: Marko Krivec, Martin Gazvoda, Kristof Kranjc, Slovenko Polanc, Marijan KocevarAbstract:The application of activated carbon (Darco KB) for the acceleration and direction of the transformation of various 2H-pyran-2-ones with N-substituted maleimides toward isoindole derivatives through the reaction sequence cycloaddition/elimination/dehydrogenation is described. In this reaction, the Catalyst mainly influences the dehydrogenation step, which is essential to avoid the formation of bicyclo[2.2.2]octenes as the other possible products. We found that the combination of Darco KB, as the metal-free Catalyst, and decalin, as the solvent in a closed vessel, represents the most successful conditions. A comparison of the effect of various dehydrogenation Catalysts and reaction conditions is also presented. In addition, we have proven that the aromatization occurs via a hydrogen transfer from the cyclohexadiene intermediate to the maleimide derivative (therefore producing succinimides). This transfer is facilitated by the active surface of the heterogeneous Carbon-Based Catalyst.
Pan Li - One of the best experts on this subject based on the ideXlab platform.
-
deactivation mechanism and regeneration of carbon nanocomposite Catalyst for acetylene hydrochlorination
Applied Catalysis B-environmental, 2017Co-Authors: Xingyun Li, Pan LiAbstract:Abstract Acetylene hydrochlorination is an important coal-based technology for production of vinyl chloride, the monomer of one of the world mostly used plastics. Despite of the great potentials demonstrated for Carbon-Based Catalysts to replace the toxic mercury chloride, the stability and the deactivation mechanism are rarely discussed, which is essential for real applications. Herein, we present a detailed study on the deactivation mechanism of nitrogen doped carbon based Catalyst in acetylene hydrochlorination. The results show that the deactivation was likely caused by the carbon-like deposition over the Catalyst, which can be regenerated with high temperature NH 3 treatment.
Martin Gazvoda - One of the best experts on this subject based on the ideXlab platform.
-
A Way to Avoid Using Precious Metals: The Application of High-Surface Activated Carbon for the Synthesis of Isoindoles via the Diels–Alder Reaction of 2H-Pyran-2-ones
2016Co-Authors: Marko Krivec, Martin Gazvoda, Kristof Kranjc, Slovenko Polanc, Marijan KočevarAbstract:The application of activated carbon (Darco KB) for the acceleration and direction of the transformation of various 2H-pyran-2-ones with N-substituted maleimides toward isoindole derivatives through the reaction sequence cycloaddition/elimination/dehydrogenation is described. In this reaction, the Catalyst mainly influences the dehydrogenation step, which is essential to avoid the formation of bicyclo[2.2.2]octenes as the other possible products. We found that the combination of Darco KB, as the metal-free Catalyst, and decalin, as the solvent in a closed vessel, represents the most successful conditions. A comparison of the effect of various dehydrogenation Catalysts and reaction conditions is also presented. In addition, we have proven that the aromatization occurs via a hydrogen transfer from the cyclohexadiene intermediate to the maleimide derivative (therefore producing succinimides). This transfer is facilitated by the active surface of the heterogeneous Carbon-Based Catalyst
-
a way to avoid using precious metals the application of high surface activated carbon for the synthesis of isoindoles via the diels alder reaction of 2h pyran 2 ones
Journal of Organic Chemistry, 2012Co-Authors: Marko Krivec, Martin Gazvoda, Kristof Kranjc, Slovenko Polanc, Marijan KocevarAbstract:The application of activated carbon (Darco KB) for the acceleration and direction of the transformation of various 2H-pyran-2-ones with N-substituted maleimides toward isoindole derivatives through the reaction sequence cycloaddition/elimination/dehydrogenation is described. In this reaction, the Catalyst mainly influences the dehydrogenation step, which is essential to avoid the formation of bicyclo[2.2.2]octenes as the other possible products. We found that the combination of Darco KB, as the metal-free Catalyst, and decalin, as the solvent in a closed vessel, represents the most successful conditions. A comparison of the effect of various dehydrogenation Catalysts and reaction conditions is also presented. In addition, we have proven that the aromatization occurs via a hydrogen transfer from the cyclohexadiene intermediate to the maleimide derivative (therefore producing succinimides). This transfer is facilitated by the active surface of the heterogeneous Carbon-Based Catalyst.
Kristof Kranjc - One of the best experts on this subject based on the ideXlab platform.
-
A Way to Avoid Using Precious Metals: The Application of High-Surface Activated Carbon for the Synthesis of Isoindoles via the Diels–Alder Reaction of 2H-Pyran-2-ones
2016Co-Authors: Marko Krivec, Martin Gazvoda, Kristof Kranjc, Slovenko Polanc, Marijan KočevarAbstract:The application of activated carbon (Darco KB) for the acceleration and direction of the transformation of various 2H-pyran-2-ones with N-substituted maleimides toward isoindole derivatives through the reaction sequence cycloaddition/elimination/dehydrogenation is described. In this reaction, the Catalyst mainly influences the dehydrogenation step, which is essential to avoid the formation of bicyclo[2.2.2]octenes as the other possible products. We found that the combination of Darco KB, as the metal-free Catalyst, and decalin, as the solvent in a closed vessel, represents the most successful conditions. A comparison of the effect of various dehydrogenation Catalysts and reaction conditions is also presented. In addition, we have proven that the aromatization occurs via a hydrogen transfer from the cyclohexadiene intermediate to the maleimide derivative (therefore producing succinimides). This transfer is facilitated by the active surface of the heterogeneous Carbon-Based Catalyst
-
a way to avoid using precious metals the application of high surface activated carbon for the synthesis of isoindoles via the diels alder reaction of 2h pyran 2 ones
Journal of Organic Chemistry, 2012Co-Authors: Marko Krivec, Martin Gazvoda, Kristof Kranjc, Slovenko Polanc, Marijan KocevarAbstract:The application of activated carbon (Darco KB) for the acceleration and direction of the transformation of various 2H-pyran-2-ones with N-substituted maleimides toward isoindole derivatives through the reaction sequence cycloaddition/elimination/dehydrogenation is described. In this reaction, the Catalyst mainly influences the dehydrogenation step, which is essential to avoid the formation of bicyclo[2.2.2]octenes as the other possible products. We found that the combination of Darco KB, as the metal-free Catalyst, and decalin, as the solvent in a closed vessel, represents the most successful conditions. A comparison of the effect of various dehydrogenation Catalysts and reaction conditions is also presented. In addition, we have proven that the aromatization occurs via a hydrogen transfer from the cyclohexadiene intermediate to the maleimide derivative (therefore producing succinimides). This transfer is facilitated by the active surface of the heterogeneous Carbon-Based Catalyst.