Results 231 to 240 of about 39,817 (294)

Enantioselective desymmetrisation

Journal of the Chemical Society, Perkin Transactions 1, 1999
openaire   +2 more sources

Chirality in Transition Metal Dichalcogenide Nanostructures

Chemistry – A European Journal, EarlyView.
The emergence of chirality in inorganic nanostructures has a critical impact on the properties and potential applications of these novel nanomaterials. This work presents a critical collection of examples of the observation of chirality in TMDs, covering different synthetic procedures and origins of chirality as well as a broad range of dimensionality ...
Lorenzo Branzi, Joseph Martyn, Lucy Fitzsimmons, Yurii K. Gun'ko   +3 more
wiley   +1 more source

Enantioselective Photochemical Generation of a Short-Lived, Twisted Cycloheptenone Isomer: Catalytic Formation, Detection, and Consecutive Chemistry. [PDF]

Angew Chem Int Ed Engl
Stierle M, Jaschke C, Grenda DJ, Peschel MT, Pickl T, Gessner N, Nuernberger P, Fingerhut BP, Ochsenfeld C, de Vivie-Riedle R, Bach T.   +10 more
europepmc   +1 more source

Integrating Catalysis and Analysis: Accelerated Asymmetric Reaction Development With a Multitasking Reactivity Umpolung/Chiroptical Reporter Auxiliary

Chemistry – A European Journal, EarlyView.
A readily available isatin molecule serves as amine protecting group, reagent for reactivity Umpolung, and as chiroptical yield and enantioselectivity reporter to enable chromatography‐free high‐throughput optimization of an organocatalytic asymmetric Michael addition solely based on the analysis of UV and circular dichroism inductions that are ...
F. Safia Kariapper, Maria Bouda, Christian Wolf   +2 more
wiley   +1 more source

Asymmetric S=N-embedded polyaromatic construction via enantioselective Pd-catalyzed C-H activation. [PDF]

Nat Commun
Zeng D, Zhang X, Wang M, Jiang X.
europepmc   +1 more source

Engineering of the Thiamine Diphosphate‐Dependent JanthE for the Synthesis of Tertiary Alcohols

Chemistry – A European Journal, EarlyView.
The synthesis of chiral tertiary alcohols is in high demand. Here we investigate in detail the aldehyde–ketone cross‐coupling reactions catalyzed by the promising thiamine diphosphate‐dependent lyase JanthE. Focusing on both reaction parameters and engineering, we rationally develop JanthE to improve its applicability and demonstrate its evolvability ...
Lucrezia Lanza, Daniela Bjarnesen, Mehmet Mervan Çakar, Andrea Rizzo, Akash Pandya, Carmen Aranda, Zvjezdana Findrik Blažević, Michael Müller   +7 more
wiley   +1 more source

Assembly of (hetero)aryl sulfilimines via copper-catalyzed enantioselective S-arylation of sulfenamides with (hetero)aryl Iodides. [PDF]

Nat Commun
He M, Zhang R, Wang T, Xue XS, Ma D.
europepmc   +1 more source

Grafted Disulfide‐Linked Linear Polymers for Heterogeneous Thiyl Radical Photocatalysis

Chemistry – A European Journal, EarlyView.
Grafting a linear disulfide‐bridged polymer to a supporting polymer backbone achieved heterogeneous thiyl radical photocatalysis. The polyvinyl backbone ensures recyclability while enabling thiyl radical generation for organic transformations. Achieving ∼99% conversion for diarylalkyne photooxidation, the design strategy combines robustness, solubility,
Sunil Kumar, Bolormaa Bayarkhuu, Jueun Park, Hong Y. Cho, Jeehye Byun   +4 more
wiley   +1 more source

Chiral iron porphyrin (+)-D₄-(por)FeCl catalyzes highly enantioselective cyclopropanation of alkenes using <i>in situ</i> generated diazoacetonitrile with up to 35 000 product turnover. [PDF]

Chem Sci
Tan HC, Shing KP, Wang HH, Liu Y, Che CM.   +4 more
europepmc   +1 more source

Chiral Cobaltabis(dicarbollide) Catalysts Prepared Using a Silica Helical Nanoplatform for the Enantioselective Photooxidation of Aromatic Secondary Alcohols

Chemistry – A European Journal, EarlyView.
Chiral COSAN Nanocatalysts: Enantiopure silica COSAN‐Hybrid nanohelices have been prepared by electrostatic co‐assembly of achiral COSAN anions and silica hybrid nanohelices. Their optical activity was confirmed by CD and ROA measurements. These COSAN‐Hybrids are efficient and recoverable catalysts in the photooxidative kinetic resolution of aromatic ...
Hao Wang, Emilie Pouget, Estelle Morvan, Sonia Buffière, Nicolas Daugey, Yann Danten, Thierry Buffeteau, Reiko Oda, Sylvain Nlate   +8 more
wiley   +1 more source