scholarly journals Tandem Mannich/Diels–Alder reactions for the synthesis of indole compound libraries

RSC Advances ◽  
2016 ◽  
Vol 6 (52) ◽  
pp. 46654-46657 ◽  
Author(s):  
Peng Wu ◽  
Michael Åxman Petersen ◽  
Rico Petersen ◽  
Thomas Flagstad ◽  
Rachel Guilleux ◽  
...  
Keyword(s):  
Diels Alder ◽  
Indole Compound ◽  
Compound Libraries ◽  
Screening Library

A core scaffold for screening library production was synthesized in just four steps using a tandem Mannich/Diels–Alder sequence.

scholarly journals Diastereoselective synthesis of novel heterocyclic scaffolds through tandem Petasis 3-component/intramolecular Diels–Alder and ROM–RCM reactions

2017 ◽  
Vol 53 (68) ◽  
pp. 9410-9413 ◽  
Author(s):  
Mette Ishoey ◽  
Rico G. Petersen ◽  
Michael Å. Petersen ◽  
Peng Wu ◽  
Mads H. Clausen ◽  
...  
Keyword(s):  
Heterocyclic Compound ◽  
Diels Alder ◽  
Diastereoselective Synthesis ◽  
Compound Libraries

Complexity-generating tandem Petasis 3-component/intramolecular Diels–Alder and ROM–RCM reactions for the diastereoselective synthesis of sp3-rich heterocyclic compound libraries are presented.

scholarly journals Screening of metal ions and organocatalysts on solid support-coupled DNA oligonucleotides guides design of DNA-encoded reactions

2019 ◽  
Vol 10 (45) ◽  
pp. 10481-10492 ◽  
Author(s):  
Marco Potowski ◽  
Florian Losch ◽  
Elena Wünnemann ◽  
Janina K. Dahmen ◽  
Silvia Chines ◽  
...  
Keyword(s):  
Drug Discovery ◽  
Dna Sequences ◽  
Solid Phase ◽  
Alder Reaction ◽  
Solid Support ◽  
Diels Alder ◽  
Dna Oligonucleotides ◽  
Compound Libraries ◽  
Diels Alder Reaction ◽  
Selection Of

DNA-encoded compound libraries are widely used in drug discovery. Screening of catalysts for compatibility with solid phase-coupled DNA sequences guided the selection of encoded reactions, exemplified by a Zn(II)-mediated aza-Diels–Alder reaction.

The Diels-Alder Reaction of 2-Ethenyl-1,4-Benzodioxin: A New and Simple Synthesis of Bisaryl Ethers

Synlett ◽  
1989 ◽  
Vol 1989 (01) ◽  
pp. 30-32
Author(s):  
Thomas V. Lee ◽  
Alistair J. Leigh ◽  
Christopher B. Chapleo
Keyword(s):  
Alder Reaction ◽  
Diels Alder ◽  
Simple Synthesis ◽  
Diels Alder Reaction

2-NITROBENZOFURAN AS DIENOPHILE IN DIELS-ALDER REACTIONS. A SIMPLE DIBENZOFURANS SYNTHESIS

2009 ◽  
Author(s):  
Pedro Mancini ◽  
Maria Kneeteman ◽  
Claudia Della Rosa
Keyword(s):  
Diels Alder

Trienamines: Their Key Role in Extended Organocatalysis for Diels-Alder Reactions

2013 ◽  
Vol 1 ◽  
Author(s):  
Silvia Reboredo ◽  
Alejandro Parra ◽  
José Alemán
Keyword(s):  
Diels Alder

The intermolecular anthracene-transfer in a regiospecific antipodal C60 difunctionalization

2020 ◽  
Author(s):  
Radu Talmazan ◽  
Klaus R. Liedl ◽  
Bernhard Kräutler ◽  
Maren Podewitz
Keyword(s):  
Noncovalent Interactions ◽  
Interaction Model ◽  
Alder Reaction ◽  
Diels Alder ◽  
Stacking Interactions ◽  
Pi Stacking ◽  
Diels Alder Reaction ◽  
Double Decker ◽  
Anthracene Molecule ◽  
New Strategies

We analyze the mechanism of the topochemically controlled difunctionalization of C60 and anthracene, where an anthracene molecule is transferred from one C60 monoadduct to another one under exclusive formation of equal amounts of C60 and the difficult to make antipodal C60 bisadduct. Our herein disclosed dispersion corrected DFT studies show the anthracene transfer to take place in a synchronous retro Diels-Alder/Diels-Alder reaction: an anthracene molecule dissociates from one fullerene under formation of an intermediate, while already undergoing stabilizing interactions with both neighboring fullerenes, facilitating the reaction kinetically. In the intermediate, a planar anthracene molecule is sandwiched between two neighboring fullerenes and forms equally strong "double-decker" type pi-pi stacking interactions with both of these fullerenes. Analysis with the distorsion interaction model shows that the anthracene unit of the intermediate is almost planar with minimal distorsions. This analysis sheds light on the existence of noncovalent interactions engaging both faces of a planar polyunsaturated ring and two convex fullerene surfaces in an unprecedented 'inverted sandwich' structure. Hence, it sheds light on new strategies to design functional fullerene based materials.<br>

Potassium Arylethynyltrifluoroborate as an Unstrained Dienophile for Ultrafast and On Demand Activation of Bioorthogonal IEDDA Reactions

2019 ◽  
Author(s):  
Zijian Guo ◽  
Bruno Oliveira ◽  
Claudio D. Navo ◽  
Pedro M. S. D. Cal ◽  
Francisco Corzana ◽  
...  
Keyword(s):  
Protein Modification ◽  
Cross Reactivity ◽  
Diels Alder ◽  
Inverse Electron Demand ◽  
On Demand ◽  
Strained Alkenes ◽  
Electron Demand

<p>Strained alkenes and alkynes are the predominant dienophiles used in inverse electron-demand Diels-Alder (IEDDA) reactions, however, their instability, cross-reactivity and accessibility are problematic. Unstrained dienophiles, although physiologically stable and synthetically accessible, react with tetrazines significantly slower relative to strained variants. Here we report the development of potassium arylethynyltrifluoroborates as unstrained dienophiles for ultrafast, chemically triggered IEDDA reactions. By varying the substituents on the tetrazine (e.g. pyridyl- to benzyl-substituents), cycloaddition rates can vary from nearly spontaneous (<i>t</i><sub>1/2</sub>≈ 9 s) to no reaction with the unstrained alkyne-BF3 dienophile. The reported system was applied to protein modification and enabled mutually orthogonal labelling of two distinct proteins.</p>

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