The Experts below are selected from a list of 7893 Experts worldwide ranked by ideXlab platform
Jinpei Cheng - One of the best experts on this subject based on the ideXlab platform.
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amination of 3 substituted Benzofuran 2 3h ones triggered by single electron transfer
Organic Letters, 2016Co-Authors: Chen Yang, Jinpei Cheng, Yang Liu, Jindong YangAbstract:An efficient amination reaction of 3-substituted Benzofuran-2(3H)-ones promoted by cesium carbonate was developed. A putative mechanism involving a single-electron-transfer event was proposed, which represents a new reactivity for Benzofuran-2(3H)-ones.
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highly enantioselective 4 2 cycloaddition of allenoates and 2 olefinic Benzofuran 3 ones
Organic Letters, 2015Co-Authors: Feng Wang, Chao Luo, Yeye Shen, Zedong Wang, Jinpei ChengAbstract:A highly enantioselective [4 + 2] cycloaddition of allenoates with 2-olefinic Benzofuran-3-ones catalyzed by (DHQD)2AQN, which allowed the synthesis of optically active dihydropyran-fused Benzofurans, was developed.
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a novel reaction of the huisgen zwitterion with Benzofuran 2 3 diones an efficient strategy for the synthesis of spirocyclic Benzofuran 2 one derivatives
ChemInform, 2014Co-Authors: Zedong Wang, Feng Wang, Nan Dong, Jinpei ChengAbstract:The nitrogen-based nucleophile generated from azodicarboxylate and triphenylphosphine displays good reactivity toward Benzofuran-2,3-diones to generate a variety of spirocyclic Benzofuran-2-one derivatives.
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a novel reaction of the huisgen zwitterion with Benzofuran 2 3 diones an efficient strategy for the synthesis of spirocyclic Benzofuran 2 one derivatives
Tetrahedron Letters, 2013Co-Authors: Zedong Wang, Feng Wang, Nan Dong, Jinpei ChengAbstract:Abstract The nitrogen-based nucleophile generated from azodicarboxylate and triphenylphosphine displayed good reactivity toward Benzofuran-2,3-diones to generate a variety of spirocyclic Benzofuran-2-one derivatives. The reactions accommodate a number of Benzofuran-2,3-diones and different dialkylazodicarboxylates to give the enriched functionalized 3-spirooxadiazole Benzofuran-2-ones with moderate to good yields (up to 93%).
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asymmetric michael addition reactions of 3 substituted Benzofuran 2 3h ones to nitroolefins catalyzed by a bifunctional tertiary amine thiourea
Organic and Biomolecular Chemistry, 2012Co-Authors: Xiaosong Xue, Nan Dong, Cong Liu, Bin Wang, Boxuan Tan, Jialu Jin, Yueyan Zhang, Jinpei ChengAbstract:The current work reports an organocatalytic strategy for the asymmetric catalysis of chiral Benzofuran-2(3H)-ones bearing 3-position all-carbon quaternary stereocenters. Accordingly, highly enantioselective Michael addition reactions of 3-substituted Benzofuran-2(3H)-ones to nitroolefins have been developed by utilizing a bifunctional tertiary-amine thiourea catalyst. The reactions accommodate a number of nitroolefins and 3-substituted Benzofuran-2(3H)-ones to give the desired chiral Benzofuran-2(3H)-one products with moderate to excellent yields (up to 98%) and moderate to very good selectivities (up to 19 : 1 dr and up to 91% ee). Theoretical calculations using the DFT method on the origin of the stereoselectivity were conducted. The effect of the nitroolefin substituent position on the stereoselectivity of the Michael addition reaction was also theoretically rationalized.
Yujing You - One of the best experts on this subject based on the ideXlab platform.
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solid liquid equilibria of ternary 4 nitro 2 Benzofuran 1 3 dione 5 nitro 2 Benzofuran 1 3 dione 2 propanone at 283 15 k and 323 15 k
Journal of Chemical & Engineering Data, 2013Co-Authors: Deman Han, Fuyou Pan, Wenping Jia, Yanxian Jin, Jia Zhao, Yujing YouAbstract:In this work, solid–liquid equilibria (SLE) data for the ternary 4-nitro-2-Benzofuran-1,3-dione + 5-nitro-2-Benzofuran-1,3-dione + 2-propanone system have been measured at (283.15 and 323.15) K respectively. The solid–liquid phase diagrams of the ternary system were constructed based on the measured solubility data. The Schreinemaker’s wet residue method was used to confirm the solid phases formed in the system. Furthermore, the density (ρ) of equilibrium liquid phase was gained. At (283.15 and 323.15) K, two pure solids formed which correspond to 4-nitro-2-Benzofuran-1,3-dione and 5-nitro-2-Benzofuran-1,3-dione in the ternary 4-nitro-2-Benzofuran-1,3-dione + 5-nitro-2-Benzofuran-1,3-dione + 2-propanone system.
Nan Dong - One of the best experts on this subject based on the ideXlab platform.
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a novel reaction of the huisgen zwitterion with Benzofuran 2 3 diones an efficient strategy for the synthesis of spirocyclic Benzofuran 2 one derivatives
ChemInform, 2014Co-Authors: Zedong Wang, Feng Wang, Nan Dong, Jinpei ChengAbstract:The nitrogen-based nucleophile generated from azodicarboxylate and triphenylphosphine displays good reactivity toward Benzofuran-2,3-diones to generate a variety of spirocyclic Benzofuran-2-one derivatives.
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a novel reaction of the huisgen zwitterion with Benzofuran 2 3 diones an efficient strategy for the synthesis of spirocyclic Benzofuran 2 one derivatives
Tetrahedron Letters, 2013Co-Authors: Zedong Wang, Feng Wang, Nan Dong, Jinpei ChengAbstract:Abstract The nitrogen-based nucleophile generated from azodicarboxylate and triphenylphosphine displayed good reactivity toward Benzofuran-2,3-diones to generate a variety of spirocyclic Benzofuran-2-one derivatives. The reactions accommodate a number of Benzofuran-2,3-diones and different dialkylazodicarboxylates to give the enriched functionalized 3-spirooxadiazole Benzofuran-2-ones with moderate to good yields (up to 93%).
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asymmetric michael addition reactions of 3 substituted Benzofuran 2 3h ones to nitroolefins catalyzed by a bifunctional tertiary amine thiourea
Organic and Biomolecular Chemistry, 2012Co-Authors: Xiaosong Xue, Nan Dong, Cong Liu, Bin Wang, Boxuan Tan, Jialu Jin, Yueyan Zhang, Jinpei ChengAbstract:The current work reports an organocatalytic strategy for the asymmetric catalysis of chiral Benzofuran-2(3H)-ones bearing 3-position all-carbon quaternary stereocenters. Accordingly, highly enantioselective Michael addition reactions of 3-substituted Benzofuran-2(3H)-ones to nitroolefins have been developed by utilizing a bifunctional tertiary-amine thiourea catalyst. The reactions accommodate a number of nitroolefins and 3-substituted Benzofuran-2(3H)-ones to give the desired chiral Benzofuran-2(3H)-one products with moderate to excellent yields (up to 98%) and moderate to very good selectivities (up to 19 : 1 dr and up to 91% ee). Theoretical calculations using the DFT method on the origin of the stereoselectivity were conducted. The effect of the nitroolefin substituent position on the stereoselectivity of the Michael addition reaction was also theoretically rationalized.
Zedong Wang - One of the best experts on this subject based on the ideXlab platform.
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highly enantioselective 4 2 cycloaddition of allenoates and 2 olefinic Benzofuran 3 ones
Organic Letters, 2015Co-Authors: Feng Wang, Chao Luo, Yeye Shen, Zedong Wang, Jinpei ChengAbstract:A highly enantioselective [4 + 2] cycloaddition of allenoates with 2-olefinic Benzofuran-3-ones catalyzed by (DHQD)2AQN, which allowed the synthesis of optically active dihydropyran-fused Benzofurans, was developed.
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a novel reaction of the huisgen zwitterion with Benzofuran 2 3 diones an efficient strategy for the synthesis of spirocyclic Benzofuran 2 one derivatives
ChemInform, 2014Co-Authors: Zedong Wang, Feng Wang, Nan Dong, Jinpei ChengAbstract:The nitrogen-based nucleophile generated from azodicarboxylate and triphenylphosphine displays good reactivity toward Benzofuran-2,3-diones to generate a variety of spirocyclic Benzofuran-2-one derivatives.
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a novel reaction of the huisgen zwitterion with Benzofuran 2 3 diones an efficient strategy for the synthesis of spirocyclic Benzofuran 2 one derivatives
Tetrahedron Letters, 2013Co-Authors: Zedong Wang, Feng Wang, Nan Dong, Jinpei ChengAbstract:Abstract The nitrogen-based nucleophile generated from azodicarboxylate and triphenylphosphine displayed good reactivity toward Benzofuran-2,3-diones to generate a variety of spirocyclic Benzofuran-2-one derivatives. The reactions accommodate a number of Benzofuran-2,3-diones and different dialkylazodicarboxylates to give the enriched functionalized 3-spirooxadiazole Benzofuran-2-ones with moderate to good yields (up to 93%).
Deman Han - One of the best experts on this subject based on the ideXlab platform.
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solid liquid equilibria of ternary 4 nitro 2 Benzofuran 1 3 dione 5 nitro 2 Benzofuran 1 3 dione 2 propanone at 283 15 k and 323 15 k
Journal of Chemical & Engineering Data, 2013Co-Authors: Deman Han, Fuyou Pan, Wenping Jia, Yanxian Jin, Jia Zhao, Yujing YouAbstract:In this work, solid–liquid equilibria (SLE) data for the ternary 4-nitro-2-Benzofuran-1,3-dione + 5-nitro-2-Benzofuran-1,3-dione + 2-propanone system have been measured at (283.15 and 323.15) K respectively. The solid–liquid phase diagrams of the ternary system were constructed based on the measured solubility data. The Schreinemaker’s wet residue method was used to confirm the solid phases formed in the system. Furthermore, the density (ρ) of equilibrium liquid phase was gained. At (283.15 and 323.15) K, two pure solids formed which correspond to 4-nitro-2-Benzofuran-1,3-dione and 5-nitro-2-Benzofuran-1,3-dione in the ternary 4-nitro-2-Benzofuran-1,3-dione + 5-nitro-2-Benzofuran-1,3-dione + 2-propanone system.