The Experts below are selected from a list of 22404 Experts worldwide ranked by ideXlab platform
Sandrine Deloisy - One of the best experts on this subject based on the ideXlab platform.
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regioselective preparation of 7 oxanorborna 2 5 diene 2 3 dicarboxylic acid derivatives by the Diels Alder Reaction a selective access to furans by retro Diels Alder Reaction
2013Co-Authors: Nisrine Sultan, Régis Guillot, Luis Blanco, Sandrine DeloisyAbstract:A convenient approach to furan derivatives is achieved through regioselective hydrolysis of Diels—Alder adducts (III), formation of diesters or amido esters, hydrogenation, and retro-Diels—Alder Reaction.
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Regioselective Preparation of 7-Oxanorborna-2,5-diene-2,3-dicarboxylic Acid Derivatives by the Diels-Alder Reaction: A Selective Access to Furans by Retro-Diels-Alder Reaction
2013Co-Authors: Nisrine Sultan, Régis Guillot, Luis Blanco, Sandrine DeloisyAbstract:Hydrolysis of 1-substituted 7-oxanorborna-2,5-diene-2,3-dicarboxylates occurred regioselectively at the ester group in the 3-position to give monocarboxylic acids from which diesters containing two different alkoxy groups and amido esters were selectively prepared. Hydrogenation of these oxanorbornadiene derivatives followed by a retro-Diels–Alder Reaction gave the corresponding furans as single regioisomers.
Hisashi Yamamoto - One of the best experts on this subject based on the ideXlab platform.
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catalytic enantioselective nitroso Diels Alder Reaction
2016Co-Authors: Biplab Maji, Hisashi YamamotoAbstract:The Cu-catalyzed Diels—Alder Reaction of 1,3-dienes with nitroso compounds bearing a pyrimidine or pyrazine substituent is achieved with high enantioselectivities using DTBM-Segphos as ligand.
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lewis acid catalyzed inverse electron demand Diels Alder Reaction of tropones
2009Co-Authors: Pingfan Li, Hisashi YamamotoAbstract:Lewis acid catalyzed inverse-electron-demand Diels−Alder Reaction of tropone derivatives was developed. Up to 97% ee was obtained for the chiral dinucleus BINOL−aluminum complex catalyzed Reaction between tropones and ketene diethyl acetal to give bicyclo[3.2.2] ring structures, which opens up a unique way of making chiral seven-membered rings.
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asymmetric aza Diels Alder Reaction mediated by chiral boron reagent
1992Co-Authors: Kouji Hattori, Hisashi YamamotoAbstract:An asymmetric aza-Diels-Alder Reaction of an imines mediated by an in situ generated chiral boron complex is described. The method is successful with several aldimines and affords products of up to 9O% ee
Huanfeng Jiang - One of the best experts on this subject based on the ideXlab platform.
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bioinspired intramolecular Diels Alder Reaction a rapid access to the highly strained cyclopropane fused polycyclic skeleton
2014Co-Authors: Shifa Zhu, Zhengjiang Guo, Zhipeng Huang, Huanfeng JiangAbstract:The title Au-catalyzed Diels-Alder Reaction results in cyclopropane-fused polycyclic products from mixtures of cis/trans dienes and enynal.
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bioinspired intramolecular Diels Alder Reaction a rapid access to the highly strained cyclopropane fused polycyclic skeleton
2014Co-Authors: Shifa Zhu, Zhengjiang Guo, Zhipeng Huang, Huanfeng JiangAbstract:A bioinsipred gold-catalyzed tandem Diels-Alder/Diels-Alder Reaction of an enynal and a 1,3-diene, forming the highly-strained benzotricyclo[3.2.1.0(2,7) ]octane skeleton, was reported. In contrast, a Diels-Alder/Friedel-Crafts tandem Reaction occurred instead when silver salts were used as the catalyst. Although both Reactions experienced the similar Diels-Alder Reaction of a pyrylium intermediate with a 1,3-diene, they have different Reaction mechanisms. The former proceeded with a stepwise Diels-Alder Reaction, while the latter one with a concerted one.
Nisrine Sultan - One of the best experts on this subject based on the ideXlab platform.
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regioselective preparation of 7 oxanorborna 2 5 diene 2 3 dicarboxylic acid derivatives by the Diels Alder Reaction a selective access to furans by retro Diels Alder Reaction
2013Co-Authors: Nisrine Sultan, Régis Guillot, Luis Blanco, Sandrine DeloisyAbstract:A convenient approach to furan derivatives is achieved through regioselective hydrolysis of Diels—Alder adducts (III), formation of diesters or amido esters, hydrogenation, and retro-Diels—Alder Reaction.
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Regioselective Preparation of 7-Oxanorborna-2,5-diene-2,3-dicarboxylic Acid Derivatives by the Diels-Alder Reaction: A Selective Access to Furans by Retro-Diels-Alder Reaction
2013Co-Authors: Nisrine Sultan, Régis Guillot, Luis Blanco, Sandrine DeloisyAbstract:Hydrolysis of 1-substituted 7-oxanorborna-2,5-diene-2,3-dicarboxylates occurred regioselectively at the ester group in the 3-position to give monocarboxylic acids from which diesters containing two different alkoxy groups and amido esters were selectively prepared. Hydrogenation of these oxanorbornadiene derivatives followed by a retro-Diels–Alder Reaction gave the corresponding furans as single regioisomers.
Shifa Zhu - One of the best experts on this subject based on the ideXlab platform.
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bioinspired intramolecular Diels Alder Reaction a rapid access to the highly strained cyclopropane fused polycyclic skeleton
2014Co-Authors: Shifa Zhu, Zhengjiang Guo, Zhipeng Huang, Huanfeng JiangAbstract:The title Au-catalyzed Diels-Alder Reaction results in cyclopropane-fused polycyclic products from mixtures of cis/trans dienes and enynal.
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bioinspired intramolecular Diels Alder Reaction a rapid access to the highly strained cyclopropane fused polycyclic skeleton
2014Co-Authors: Shifa Zhu, Zhengjiang Guo, Zhipeng Huang, Huanfeng JiangAbstract:A bioinsipred gold-catalyzed tandem Diels-Alder/Diels-Alder Reaction of an enynal and a 1,3-diene, forming the highly-strained benzotricyclo[3.2.1.0(2,7) ]octane skeleton, was reported. In contrast, a Diels-Alder/Friedel-Crafts tandem Reaction occurred instead when silver salts were used as the catalyst. Although both Reactions experienced the similar Diels-Alder Reaction of a pyrylium intermediate with a 1,3-diene, they have different Reaction mechanisms. The former proceeded with a stepwise Diels-Alder Reaction, while the latter one with a concerted one.