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Angewandte Chemie, 2020
The regio- and enantioselective (3+3) cycloaddition of nitrones with 2-indolylmethanols was accomplished by the cooperative catalysis of hexafluoroisopropanol (HFIP) and chiral phosphoric acid (CPA).
Tian‐Zhen Li+7 more
semanticscholar +1 more source
The regio- and enantioselective (3+3) cycloaddition of nitrones with 2-indolylmethanols was accomplished by the cooperative catalysis of hexafluoroisopropanol (HFIP) and chiral phosphoric acid (CPA).
Tian‐Zhen Li+7 more
semanticscholar +1 more source
Journal of the American Chemical Society, 2004
Selective chemical reactions that are orthogonal to the diverse functionality of biological systems have become important tools in the field of chemical biology.
Nicholas J. Agard+2 more
semanticscholar +1 more source
Selective chemical reactions that are orthogonal to the diverse functionality of biological systems have become important tools in the field of chemical biology.
Nicholas J. Agard+2 more
semanticscholar +1 more source
Do Antarafacial Cycloadditions Occur? Cycloaddition of Heptafulvalene with Tetracyanoethylene
Chemistry – A European Journal, 2022AbstractThe cycloaddition of heptafulvalene (1) with tetracyanoethylene (TCNE) was previously described as an example of an antarafacial cycloaddition, a [π14a+π2s] process that afforded only the trans cycloadduct by virtue of the edge‐to‐face approach of TCNE, facilitated by the S shape of 1.
Anthony R. Izzotti, James L. Gleason
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, 2018
Cyclic organic carbonates represent a relevant class of chemicals that can be prepared from CO2 by cycloaddition to epoxides. The application of efficient catalysts is crucial in allowing the cycloaddition reaction to proceed under very mild conditions ...
R. R. Shaikh+2 more
semanticscholar +1 more source
Cyclic organic carbonates represent a relevant class of chemicals that can be prepared from CO2 by cycloaddition to epoxides. The application of efficient catalysts is crucial in allowing the cycloaddition reaction to proceed under very mild conditions ...
R. R. Shaikh+2 more
semanticscholar +1 more source
Angewandte Chemie, 2019
Over the past years, the metal-catalyzed dearomative cycloaddition of 3-nitroindoles and 2-nitrobenzofurans have emerged as a powerful protocol to construct chiral fused heterocyclic rings.
Huamin Wang+3 more
semanticscholar +1 more source
Over the past years, the metal-catalyzed dearomative cycloaddition of 3-nitroindoles and 2-nitrobenzofurans have emerged as a powerful protocol to construct chiral fused heterocyclic rings.
Huamin Wang+3 more
semanticscholar +1 more source
ACS Catalysis, 2019
The nine-membered ring-bearing bicyclo[5.2.2]tetrahydrooxonines frameworks have enantioselectively been constructed via a tandem [3 + 2] cycloaddition/Cope rearrangement reaction of vinylethylene carbonates (VECs) with coumalates or pyrones.
Xing Gao+11 more
semanticscholar +1 more source
The nine-membered ring-bearing bicyclo[5.2.2]tetrahydrooxonines frameworks have enantioselectively been constructed via a tandem [3 + 2] cycloaddition/Cope rearrangement reaction of vinylethylene carbonates (VECs) with coumalates or pyrones.
Xing Gao+11 more
semanticscholar +1 more source
Cycloadditions with Metauo-Phosphaalkenes
Phosphorus, Sulfur, and Silicon and the Related Elements, 1994Abstract Cycloadditions of metallo-phosphaalkenes such as (C5Me5)(C0)2Fe− P=CR1R2 (R1 = R2 = SiMe3, NMe2; R1 = Ph, R2 = SiMe3) are performed with isocyanides, electron-poor alkenes, alkynes and heteroal ...
Weber, Lothar+2 more
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Angewandte Chemie, 2018
We report herein the first enantioselective cycloaddition of vinyl oxetanes, the reaction of which with azadienes provided unprecedented access to ten-membered heterocycles through a [6+4] cycloaddition. By using a commercially available chiral Pd-SIPHOX
Ya-Nong Wang+5 more
semanticscholar +1 more source
We report herein the first enantioselective cycloaddition of vinyl oxetanes, the reaction of which with azadienes provided unprecedented access to ten-membered heterocycles through a [6+4] cycloaddition. By using a commercially available chiral Pd-SIPHOX
Ya-Nong Wang+5 more
semanticscholar +1 more source
Asymmetric Cycloaddition and Cyclization Reactions Catalyzed by Chiral N,N'-Dioxide-Metal Complexes.
Accounts of Chemical Research, 2017Catalytic asymmetric cycloadditions and cascade cyclizations are a major focus for the enantioselective construction of chiral carbo- and heterocycles. A number of chiral Lewis acids and organocatalysts have been designed for such reactions.
Xiaohua Liu+4 more
semanticscholar +1 more source
Cycloaddition of Fluorinated Oxazoles. [PDF]
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
N. V. Vasil'ev+5 more
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