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Young Keun Chung - One of the best experts on this subject based on the ideXlab platform.
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efficient synthesis of highly functionalized triquinane derivatives through Dicobalt Octacarbonyl catalyzed cycloaddition of diyne with diene under carbon monoxide followed by cleavage of a double bond
Synlett, 2003Co-Authors: Seung Uk Son, Kang Hyun Park, Seung Jung Lee, Moon B Kim, Young Keun ChungAbstract:A new approach to the synthesis of angular triquinanes, based on the Dicobalt Octacarbonyl-catalyzed tandem cycloaddition of diyne and diene followed by cleavage of a double bond, is described.
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catalytic one pot synthesis of 5 5 5 6 fenestrane systems via a Dicobalt Octacarbonyl catalyzed tandem cycloaddition of dienediynes
ChemInform, 2002Co-Authors: Do Han Kim, Young Keun Chung, Seung Uk Son, Sueggeun LeeAbstract:Catalytic one-pot synthesis of fenestrane derivatives from dienediynes was developed: fenestranes were synthesized in high yields by a Dicobalt Octacarbonyl-catalyzed tandem cycloaddition of dienediynes.
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Dicobalt Octacarbonyl catalyzed carbonylated cycloaddition of triynes to functionalized tetracycles
Organic Letters, 2001Co-Authors: Seung Uk Son, Young Ae Yoon, Dai Seung Choi, Jin Kyoon Park, And Moon B Kim, Young Keun ChungAbstract:We have demonstrated that a Dicobalt Octacarbonyl catalyzed double [2 + 2 + 1] carbonylative cycloaddition reaction of triyne can be carried out to yield a novel 5.5.5.6 tetracyclic di-enone system.
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Dicobalt Octacarbonyl catalyzed tandem cycloaddition reaction between diyne and diene under co
Journal of Organic Chemistry, 2000Co-Authors: Seung Uk Son, Young Keun Chung, Sueggeun LeeAbstract:Treatment of 1,7-diphenyl-1,6-heptadiyne and a symmetric butadiene such as 2,3-dimethyl-1,3-butadiene and 1,3-cyclohexadiene with Co2(CO)8 (5 mol%) in CH2Cl2 at 110 °C under 30 atm CO for 18 h affo...
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Dicobalt Octacarbonyl catalyzed tandem 2 2 1 and 2 2 2 cycloaddition reaction of diynes with two phenylacetylenes under co
Organic Letters, 2000Co-Authors: Seung Uk Son, Young Keun Chung, Dai Seung Choi, Sueggeun LeeAbstract:Novel 5-5-6 tricyclic compounds containing cyclopentenone have been constructed by the Dicobalt Octacarbonyl catalyzed tandem [2 + 2 + 1] and [2 + 2 + 2] cycloaddition reaction between a diyne and two phenylacethylene under CO pressure.
Seung Uk Son - One of the best experts on this subject based on the ideXlab platform.
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efficient synthesis of highly functionalized triquinane derivatives through Dicobalt Octacarbonyl catalyzed cycloaddition of diyne with diene under carbon monoxide followed by cleavage of a double bond
Synlett, 2003Co-Authors: Seung Uk Son, Kang Hyun Park, Seung Jung Lee, Moon B Kim, Young Keun ChungAbstract:A new approach to the synthesis of angular triquinanes, based on the Dicobalt Octacarbonyl-catalyzed tandem cycloaddition of diyne and diene followed by cleavage of a double bond, is described.
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catalytic one pot synthesis of 5 5 5 6 fenestrane systems via a Dicobalt Octacarbonyl catalyzed tandem cycloaddition of dienediynes
ChemInform, 2002Co-Authors: Do Han Kim, Young Keun Chung, Seung Uk Son, Sueggeun LeeAbstract:Catalytic one-pot synthesis of fenestrane derivatives from dienediynes was developed: fenestranes were synthesized in high yields by a Dicobalt Octacarbonyl-catalyzed tandem cycloaddition of dienediynes.
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Dicobalt Octacarbonyl catalyzed carbonylated cycloaddition of triynes to functionalized tetracycles
Organic Letters, 2001Co-Authors: Seung Uk Son, Young Ae Yoon, Dai Seung Choi, Jin Kyoon Park, And Moon B Kim, Young Keun ChungAbstract:We have demonstrated that a Dicobalt Octacarbonyl catalyzed double [2 + 2 + 1] carbonylative cycloaddition reaction of triyne can be carried out to yield a novel 5.5.5.6 tetracyclic di-enone system.
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Dicobalt Octacarbonyl catalyzed tandem cycloaddition reaction between diyne and diene under co
Journal of Organic Chemistry, 2000Co-Authors: Seung Uk Son, Young Keun Chung, Sueggeun LeeAbstract:Treatment of 1,7-diphenyl-1,6-heptadiyne and a symmetric butadiene such as 2,3-dimethyl-1,3-butadiene and 1,3-cyclohexadiene with Co2(CO)8 (5 mol%) in CH2Cl2 at 110 °C under 30 atm CO for 18 h affo...
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Dicobalt Octacarbonyl catalyzed tandem 2 2 1 and 2 2 2 cycloaddition reaction of diynes with two phenylacetylenes under co
Organic Letters, 2000Co-Authors: Seung Uk Son, Young Keun Chung, Dai Seung Choi, Sueggeun LeeAbstract:Novel 5-5-6 tricyclic compounds containing cyclopentenone have been constructed by the Dicobalt Octacarbonyl catalyzed tandem [2 + 2 + 1] and [2 + 2 + 2] cycloaddition reaction between a diyne and two phenylacethylene under CO pressure.
Sueggeun Lee - One of the best experts on this subject based on the ideXlab platform.
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catalytic one pot synthesis of 5 5 5 6 fenestrane systems via a Dicobalt Octacarbonyl catalyzed tandem cycloaddition of dienediynes
ChemInform, 2002Co-Authors: Do Han Kim, Young Keun Chung, Seung Uk Son, Sueggeun LeeAbstract:Catalytic one-pot synthesis of fenestrane derivatives from dienediynes was developed: fenestranes were synthesized in high yields by a Dicobalt Octacarbonyl-catalyzed tandem cycloaddition of dienediynes.
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Dicobalt Octacarbonyl catalyzed tandem cycloaddition reaction between diyne and diene under co
Journal of Organic Chemistry, 2000Co-Authors: Seung Uk Son, Young Keun Chung, Sueggeun LeeAbstract:Treatment of 1,7-diphenyl-1,6-heptadiyne and a symmetric butadiene such as 2,3-dimethyl-1,3-butadiene and 1,3-cyclohexadiene with Co2(CO)8 (5 mol%) in CH2Cl2 at 110 °C under 30 atm CO for 18 h affo...
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Dicobalt Octacarbonyl catalyzed tandem 2 2 1 and 2 2 2 cycloaddition reaction of diynes with two phenylacetylenes under co
Organic Letters, 2000Co-Authors: Seung Uk Son, Young Keun Chung, Dai Seung Choi, Sueggeun LeeAbstract:Novel 5-5-6 tricyclic compounds containing cyclopentenone have been constructed by the Dicobalt Octacarbonyl catalyzed tandem [2 + 2 + 1] and [2 + 2 + 2] cycloaddition reaction between a diyne and two phenylacethylene under CO pressure.
Craig A. Merlic - One of the best experts on this subject based on the ideXlab platform.
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cycloaddition reactions of cobalt complexed macrocyclic alkynes the transannular pauson khand reaction
Journal of Organic Chemistry, 2017Co-Authors: Sedef Karabiyikoglu, Byron A Boon, Craig A. MerlicAbstract:The Pauson–Khand reaction is a powerful tool for the synthesis of cyclopentenones through the efficient [2 + 2 + 1] cycloaddition of Dicobalt alkyne complexes with alkenes. While intermolecular and intramolecular variants are widely known, transannular versions of this reaction are unknown and the basis of this study. Macrocyclic enyne and dienyne complexes were readily synthesized by palladium(II)-catalyzed oxidative macrocyclizations of bis(vinyl boronate esters) or ring-closing metathesis reactions followed by complexation with Dicobalt Octacarbonyl. Several reaction modalities of these macrocyclic complexes were uncovered. In addition to the first successful transannular Pauson–Khand reactions, other intermolecular and transannular cycloaddition reactions included intermolecular Pauson–Khand reactions, transannular [4 + 2] cycloaddition reactions, intermolecular [2 + 2 + 2] cycloaddition reactions, and intermolecular [2 + 2 + 1 + 1] cycloaddition reactions. The structural and reaction requirements for...
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Cycloaddition Reactions of Cobalt-Complexed Macrocyclic Alkynes: The Transannular Pauson–Khand Reaction
2017Co-Authors: Sedef Karabiyikoglu, Byron A Boon, Craig A. MerlicAbstract:The Pauson–Khand reaction is a powerful tool for the synthesis of cyclopentenones through the efficient [2 + 2 + 1] cycloaddition of Dicobalt alkyne complexes with alkenes. While intermolecular and intramolecular variants are widely known, transannular versions of this reaction are unknown and the basis of this study. Macrocyclic enyne and dienyne complexes were readily synthesized by palladium(II)-catalyzed oxidative macrocyclizations of bis(vinyl boronate esters) or ring-closing metathesis reactions followed by complexation with Dicobalt Octacarbonyl. Several reaction modalities of these macrocyclic complexes were uncovered. In addition to the first successful transannular Pauson–Khand reactions, other intermolecular and transannular cycloaddition reactions included intermolecular Pauson–Khand reactions, transannular [4 + 2] cycloaddition reactions, intermolecular [2 + 2 + 2] cycloaddition reactions, and intermolecular [2 + 2 + 1 + 1] cycloaddition reactions. The structural and reaction requirements for each process are presented
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Transannular [4 + 2] Cycloaddition Reactions of Cobalt-Complexed Macrocyclic Dienynes
2015Co-Authors: Sedef Karabiyikoglu, Craig A. MerlicAbstract:The first transannular [4 + 2] cycloaddition reactions of macrocyclic Dicobalt hexacarbonyl–dienyne complexes were demonstrated. Complexes were conveniently prepared through palladium(II)-catalyzed intramolecular oxidative cyclization of bis(vinylboronate esters) followed by complexation with Dicobalt Octacarbonyl. Transannular [4 + 2] cycloaddition reactions of the complexes occurred at lower temperatures and shorter times than transannular Diels–Alder reactions of metal-free dienynes. Intermolecular control reactions confirmed the effect of cobalt complexation on [4 + 2] cycloaddition reactions of unactivated alkynes and dienes
Dai Seung Choi - One of the best experts on this subject based on the ideXlab platform.
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Dicobalt Octacarbonyl catalyzed carbonylated cycloaddition of triynes to functionalized tetracycles
Organic Letters, 2001Co-Authors: Seung Uk Son, Young Ae Yoon, Dai Seung Choi, Jin Kyoon Park, And Moon B Kim, Young Keun ChungAbstract:We have demonstrated that a Dicobalt Octacarbonyl catalyzed double [2 + 2 + 1] carbonylative cycloaddition reaction of triyne can be carried out to yield a novel 5.5.5.6 tetracyclic di-enone system.
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Dicobalt Octacarbonyl catalyzed tandem 2 2 1 and 2 2 2 cycloaddition reaction of diynes with two phenylacetylenes under co
Organic Letters, 2000Co-Authors: Seung Uk Son, Young Keun Chung, Dai Seung Choi, Sueggeun LeeAbstract:Novel 5-5-6 tricyclic compounds containing cyclopentenone have been constructed by the Dicobalt Octacarbonyl catalyzed tandem [2 + 2 + 1] and [2 + 2 + 2] cycloaddition reaction between a diyne and two phenylacethylene under CO pressure.