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Lei Zhu - One of the best experts on this subject based on the ideXlab platform.
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fused Polycyclic Compounds via cycloaddition of 4 1 cyclohexenyl 5 iodo 1 2 3 triazoles with 4 phenyl 1 2 4 triazoline 3 5 dione the importance of a sacrificial iodide leaving group
Journal of Organic Chemistry, 2013Co-Authors: Heather A Michaels, Tyler J Simmons, Ronald J Clark, Lei ZhuAbstract:4-(1′-Cyclohexenyl)-5-iodo-1,2,3-triazole and 4-phenyl-1,2,4-triazoline-3,5-dione undergo a formal Diels–Alder reaction, which following an SN2′ solvolysis process to displace the iodo group affords a fused Polycyclic Compound.
Kai Hou - One of the best experts on this subject based on the ideXlab platform.
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effect of Polycyclic Compounds fillers on electrical treeing characteristics in xlpe with dc impulse voltage
Energies, 2019Co-Authors: Lewei Zhu, Kai HouAbstract:Electrical tree is an important factor in the threat of the safety of cross-linked polyethylene (XLPE) insulation, eventually leading to the electrical failure of cables. Polycyclic Compounds have the potential to suppress electrical treeing growth. In this paper, three types of Polycyclic Compounds, 2-hydroxy-2-phenylacetophenone, 4-phenylbenzophenone, and 4,4′-difluorobenzophenone are added into XLPE, denoted by A, B, and C. Electrical treeing characteristics are researched with DC-impulse voltage at 30, 60, and 90 °C, and the trap distribution and carrier mobility are characterized. It has been found that although three types of Polycyclic Compounds can all suppress the electrical tree propagation at different voltages and temperatures, the suppression effect of these Polycyclic Compounds with the same DC-impulse polarity is worse than with the opposite polarity. As the temperature increases, the suppression effect becomes weak. The energy level and deep trap density are the largest in XLPE-A composite, leading to a decrease in the charge transportation and resulting in the suppression of electrical treeing growth. Experimental results reveal that the Polycyclic Compound A has great application prospects in high voltage direct current (HVDC) cables.
Heather A Michaels - One of the best experts on this subject based on the ideXlab platform.
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fused Polycyclic Compounds via cycloaddition of 4 1 cyclohexenyl 5 iodo 1 2 3 triazoles with 4 phenyl 1 2 4 triazoline 3 5 dione the importance of a sacrificial iodide leaving group
Journal of Organic Chemistry, 2013Co-Authors: Heather A Michaels, Tyler J Simmons, Ronald J Clark, Lei ZhuAbstract:4-(1′-Cyclohexenyl)-5-iodo-1,2,3-triazole and 4-phenyl-1,2,4-triazoline-3,5-dione undergo a formal Diels–Alder reaction, which following an SN2′ solvolysis process to displace the iodo group affords a fused Polycyclic Compound.
Lewei Zhu - One of the best experts on this subject based on the ideXlab platform.
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effect of Polycyclic Compounds fillers on electrical treeing characteristics in xlpe with dc impulse voltage
Energies, 2019Co-Authors: Lewei Zhu, Kai HouAbstract:Electrical tree is an important factor in the threat of the safety of cross-linked polyethylene (XLPE) insulation, eventually leading to the electrical failure of cables. Polycyclic Compounds have the potential to suppress electrical treeing growth. In this paper, three types of Polycyclic Compounds, 2-hydroxy-2-phenylacetophenone, 4-phenylbenzophenone, and 4,4′-difluorobenzophenone are added into XLPE, denoted by A, B, and C. Electrical treeing characteristics are researched with DC-impulse voltage at 30, 60, and 90 °C, and the trap distribution and carrier mobility are characterized. It has been found that although three types of Polycyclic Compounds can all suppress the electrical tree propagation at different voltages and temperatures, the suppression effect of these Polycyclic Compounds with the same DC-impulse polarity is worse than with the opposite polarity. As the temperature increases, the suppression effect becomes weak. The energy level and deep trap density are the largest in XLPE-A composite, leading to a decrease in the charge transportation and resulting in the suppression of electrical treeing growth. Experimental results reveal that the Polycyclic Compound A has great application prospects in high voltage direct current (HVDC) cables.
Johan M Winne - One of the best experts on this subject based on the ideXlab platform.
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an intramolecular 4 3 cycloaddition approach to rameswaralide inspired by biosynthesis speculation
Tetrahedron Letters, 2009Co-Authors: Gerald Pattenden, Johan M WinneAbstract:Abstract A concise synthesis of the polycycle 27 , which incorporates the 5,5,7-tricyclic ring core of rameswaralide 1 , using a biogenetically inspired acid-catalysed [4+3]-cycloaddition approach starting from the furanobutenolide 26 is described, namely, 26→28 / 29→27 . Under thermal conditions, the same furanobutenolide 26 gives the alternative Polycyclic Compound 35 , resulting from a [4+2]-cycloaddition involving the furan as dienophile.