Results 61 to 70 of about 2,093,167 (240)
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) +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 +4 more
core +2 more sources
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 +5 more
wiley +1 more source
Supramolecular Mechanophore Additives Enable Mechanochromic Hydrogels
Angewandte Chemie, EarlyView.A supramolecular loop‐forming mechanophore featuring a quencher and an emitter is incorporated as a water‐soluble macromolecular additive into hydrogels. In the stress‐free state, intramolecular charge‐transfer interactions fold the loop and quench fluorescence.
Iulia Scarlat +2 more
wiley +2 more sources
Self‐Reporting Diels–Alder Networks: Fluorescent Tracking of Reaction Conversion and Thermal History
AggregateDissociative networks comprising reversible Diels‐Alder bonds have received increasing attention due to their potential for end‐of‐life recyclability.
Paul van denTempel +6 more
doaj +1 more source
Advanced Science, EarlyView.Upon UV irradiation, flexible and tough hydrogels are formed rapidly (>0.5 s) from dilute (>0.5 wt%) solutions of o‐ethylnitrobenzene–modified PVA. At ∼1.5 wt%, the hydrogels withstand up to 10 MPa compression, remain handleable even after 200‐fold swelling.
Masaaki Okihara +4 more
wiley +1 more source
Force‐Induced Control of Circularly Polarized Luminescence With Rotaxane Architecture
Angewandte Chemie, EarlyView.Force‐induced reversible on/off switching of circularly polarized luminescence is achieved with a rotaxane‐based supramolecular mechanophore. The mechanophore, featuring a chiral helicene luminophore, is incorporated as a first network cross‐linker into a double‐network organogel.
Keigo Nonaka +10 more
wiley +2 more sources
Ionic-Liquid-Mediated MacMillan’s Catalyst for Diels-Alder Reaction
Journal of Chemistry, 2013 Ionic liquids were used to enhance as well as recycle the MacMillan's catalyst 1 for the Diels-Alder reaction. Using our developed protocol, Diels-Alder adducts were obtained in good yields and selectivities along the 6 times recycling of MacMillan's ...
Vivek Srivastava
doaj +1 more source
Mechanochemical Activation of a Bridged‐Exciplex Optical Force Probe
Advanced Science, EarlyView.A bridged‐exciplex optical force probe is synthesized, switching from solvatochromic charge‐transfer emission in the latent state to intense locally excited emission upon activation. This dual photophysical response with additional changes in quantum yield and fluorescence lifetime enables precise environmental sensing and distinct optical readouts ...
Ronja Schumann +8 more
wiley +1 more source
Supramolecular Degraders: An Emerging Paradigm in Targeted Protein Degradation
Advanced Science, EarlyView.Dynamic supramolecular assembly reshapes targeted protein degradation by coordinating modular degrader construction, delivery, functional integration, and intracellular assembly or activation across proteasomal, endosomal–lysosomal, and autophagy–lysosomal pathways.
Kongjun Liu +8 more
wiley +1 more source