Results 61 to 70 of about 2,093,219 (268)

Highly selective Diels–Alder and Heck arylation reactions in a divergent synthesis of isoindolo- and pyrrolo-fused polycyclic indoles from 2-formylpyrrole

Beilstein Journal of Organic Chemistry, 2020
A highly regio-, chemo- and stereoselective divergent synthesis of isoindolo- and pyrrolo-fused polycyclic indoles is herein described, starting from 2-formylpyrrole and employing Diels–Alder and Heck arylation reactions. 3-(N-Benzyl-2-pyrrolyl)acrylates
Carlos H. Escalante, Eder I. Martínez-Mora, Carlos Espinoza-Hicks, Alejandro A. Camacho-Dávila, Fernando R. Ramos-Morales, Francisco Delgado, Joaquín Tamariz   +6 more
doaj   +1 more source

Towards Thermally Reversible Networks Based on Furan-Functionalization of Jatropha Oil

Molecules, 2020
A novel biobased monomer for the preparation of thermally reversible networks based on the Diels-Alder reaction was synthesized from jatropha oil. The oil was epoxidized and subsequently reacted with furfurylamine to attach furan groups via an epoxide ...
Frita Yuliati, Peter J. Deuss, Hero J. Heeres, Francesco Picchioni   +3 more
doaj   +1 more source

Are There Only Fold Catastrophes in the Diels–Alder Reaction Between Ethylene and 1,3–Butadiene? [PDF]

, 2021
This work revisits the topological characterization of the Diels–Alder reaction between 1,3–butadiene and ethylene. In contrast to the currently accepted rationalization, we here provide strong evidence in support of a representation in terms of seven ...
Patricia, Pérez, Elizabeth, Rincón, Cristian, Guerra, Leandro, Ayarde-Henriquez, Mario, Duque-Noreña, Eduardo, Chamorro   +5 more
core   +1 more source

A Universal Protein Ladder for Standardization of Diverse FRET Assays

Advanced Science, EarlyView.
Translating FRET measurements from in vitro to intracellular environments requires universal benchmarks. We present a modular protein ladder using TPR motifs to harmonize data across diverse platforms. This predictable calibration curve bridges single molecule FRET measurements, with cell based measurements including FLIM‐FRET.
Evelyn R. Smith, Katie L. Gelder, Lewis Hunter‐Craig, Daniel A. Bose, Timothy D. Craggs, Alison E. Twelvetrees   +5 more
wiley   +1 more source

Flavin Catalysts in Organic Synthesis

Angewandte Chemie, EarlyView.
Flavins and their congeners are potent catalysts for organic synthesis inspired by enzymatic transformations. In addition to catalysis in the flavin ground state via covalent intermediates, the excited singlet and triplet states unlock applications including photooxidation, photoreduction, and energy transfer via sensitization.
Jan Freudenberg, Golo Storch
wiley   +2 more sources

Diels–Alder reactions in confined spaces: the influence of catalyst structure and the nature of active sites for the retro-Diels–Alder reaction

Beilstein Journal of Organic Chemistry, 2016
Diels–Alder cycloaddition between cyclopentadiene and p-benzoquinone has been studied in the confined space of a pure silica zeolite Beta and the impact on reaction rate due to the concentration effect within the pore and diffusion limitations are ...
Ángel Cantín, M. Victoria Gomez, Antonio de la Hoz   +2 more
doaj   +1 more source

Synthesis of Unsymmetrical Annulated 2,2’-Bipyridine Analogues with Attached Cycloalkene and Piperidine Rings via Sequential Diels-Alder Reaction of 5,5’-bi-1,2,4-triazinesâ€

Molecules, 2005
Synthesis of bisfunctionalized unsymmetrical 2,2’-bipyridines 8 or their sulfonyl derivatives 12a,b are described. They were prepared via the Diels-Alder reaction of 1-methyl-4-pyrrolidin-1-yl-1,2,3,6-tetrahydropyridine (6) with 3,3’-bis(methyl-
D. Branowska
doaj   +1 more source

Applications of Danishefsky's dienes in asymmetric Oxo-Diels-Alder reactions

, 2022
Applications of Danishefsky's dienes in catalytic asymmetric hetero-Diels-Alder (AHDA) reactions or specifically, their asymmetric Oxo-Diels-Alder (AOxo-DA) reactions with appropriate dienophiles are highlighted in detail, including the preparation of
AfsanehTaheri kal Koshvandi (11996987), Majid Mommahed Heravi (9225485)   +1 more
core   +1 more source

Masked Bisketenes as Diels–Alder Dienes [PDF]

, 2020
2,5-Bis(tert-butyldimethylsilyloxy)furans are established as masked vicinal bisketenes for application as dienes in the Diels–Alder reaction.
Emma, Becroft, Christopher, Newton, Jacob, Hart, Isuru, Dissanayake, Christopher, Sumby   +4 more
core   +2 more sources

Electrochemically Driven Regioselective Radical Functionalization of Allenes: Scope and Mechanistic Insights

Advanced Science, EarlyView.
Allenes emerge as powerful platforms for electrochemical functionalization through radical pathways. Selective radical addition at the central carbon triggers anodic oxidation and intramolecular cyclization, enabling efficient synthesis of oxazolines and oxazolidine‐2‐imines without external oxidants.
Pranjal Pyne, Prateek Saini, Rohel Hoque, Shivam Pandey, Srinivasan Ramakrishnan, Chandra M. R. Volla   +5 more
wiley   +1 more source