Results 121 to 130 of about 86,276 (266)
Chemistry – A European Journal, EarlyView.The mechanism of pacifigorgiadiene synthase from Burkholderia gladioli was investigated through isotopic labeling experiments and DFT calculations. The results revealed an unexpected labeling pattern which appeared to be different in the main and the side products, requiring unprecedented mechanistic explanations, including a “break‐flip‐cyclise ...
Zhiyong Yin +6 more
wiley +1 more source
Drug Design, Development and TherapyHan Yao,1,* Xingxian Luo,2,* Jinjie Yuan,3 Hong Zhang,1 Haiyan An,1 Yi Feng1 1Department of Anesthesiology, Peking University People’s Hospital, Beijing, People’s Republic of China; 2Department of Pharmacy, Peking University People’s ...
Yao H +5 more
doaj
Synthesis and Characterization of Carbazole‐Containing Aza[7]helicenes
Chemistry – A European Journal, EarlyView.Double ortho fusion led to different aza[7]helicene frameworks showing strong acidochromic behavior, singlet excited energies being more than twice the triplet energy, and high racemization barriers, allowing chiral resolution and ECD measurements. ABSTRACT Azahelicenes have attracted significant interest due to their intrinsic axial chirality and ...
Inka Marten +2 more
wiley +1 more source
Bifunctional Photocatalysts: Exploiting Proximity for Enhanced Reaction Performance
Chemistry – A European Journal, EarlyView.This review covers the application of the bifunctional approach to photocatalysis as a means to attain (enhanced) enantioselectivity, and, more in general, as a strategy to enhance the catalytic performance through an effective use of short‐lived reaction intermediates.
Luigi Dolcini +3 more
wiley +1 more source
Chemistry – A European Journal, EarlyView.In situ phenoxide formation at the benzene terminus triggers room‐temperature conversion of thia[6]helicene S,S‐dioxides to coronene. The solubility contrast drives product precipitation, enabling isolation by simple filtration. This pericyclic annulation between the helical termini provides direct access to coronene‐type planar architectures ...
Kaito Seino, Takashi Murase
wiley +1 more source
Planar Chirality Controls Diastereotopicity in [2.2]Paracyclophanyl Cyclopropenes
Chemistry – A European Journal, EarlyView.In this work, we report the synthesis of [2.2]paracyclophane‐substituted cyclopropenes via rhodium‐catalyzed cyclopropenation using a pCp‐derived carbene precursor. The planar chiral framework induces diastereotopic differentiation of otherwise equivalent alkyl substituents, which is reflected in their 1H NMR spectra.
Tilman Köhler +3 more
wiley +1 more source
Stable Cyclic Peterson Olefination Intermediates
Chemistry – A European Journal, EarlyView.We present the first synthesis and characterization of several stable cyclic Peterson olefination intermediates with four carbon bonded substituents at the silicon. The cyclic 1,2‐oxasiletanide intermediates were synthesized via the reaction of an α‐silyl carbanion with various ketones.
Julia Landwehrmann +3 more
wiley +1 more source
The Asymmetric Self‐Replicative Alkylation of N‐Arylaldimines Using Organolithium Reagents
Chemistry – A European Journal, EarlyView.Here, we report a new asymmetric autoinductive reaction; the addition of nBuLi to N‐arylaldimines to form chiral lithium amides. The reaction proceeds with full conversion and complete transfer of chirality, representing the first example of an asymmetric autoinductive reaction with organolithium reagents.
Anka Hagelschuer +2 more
wiley +1 more source
Major Reference Works, Page 290-301., 2021 International Tables for Crystallography is the definitive resource and reference work for crystallography and structural science.
Each of the eight volumes in the series contains articles and tables of data relevant to crystallographic research and to applications of crystallographic methods in all sciences concerned with the ...
John P. Sutter C. Chantler +2 more
wiley +1 more source
Anisotropy Factor Spectra for Weakly Allowed Electronic Transitions in Chiral Ketones
ChemPhysChem, Volume 26, Issue 6, March 15, 2025.Anisotropy factor spectra for the weak n→π*‐type A‐band of chiral ketones cannot be described within the Franck–Condon approximation. Thus, we present such spectra computed by accounting for Herzberg–Teller corrections and compare them to experiments for fenchone, camphor and 3MCP to describe chiroptical properties of these molecules in the mid to near
Leon A. Kerber +5 more
wiley +1 more source