Results 61 to 70 of about 25,864 (264)

N-Heterocyclic Carbene Adducts of Aluminium Triiodide

, 2009
Ghadwal R, Roesky HW, Herbst-Irmer R, Jones PG. N-Heterocyclic Carbene Adducts of Aluminium Triiodide. Zeitschrift für anorganische und allgemeine Chemie.
Jones, Peter G., Ghadwal, Rajendra ; https://orcid.org/, Roesky, Herbert W., Herbst-Irmer, Regine   +3 more
core   +2 more sources

Atroposelective Construction of Axially Chiral Tetraarylethenes Via NHC‐Catalyzed Desymmetrization

Advanced Science, EarlyView.
We report the first NHC‐catalyzed atroposelective synthesis of axially chiral TAEs via oxidative desymmetrization of prochiral TAE dialdehydes. This catalytic strategy operates under mild conditions and accommodates a broad range of phenolic and nitrogen nucleophiles, delivering diverse axially chiral TAEs in good yields and up to 99% ee.
Yang‐Ze Zheng, Ting‐Rui Luan, Ming‐Hao Song, Zhaofeng Sun, Chuan‐Jun Lu, Long‐Long Xi, Ren‐Rong Liu   +6 more
wiley   +1 more source

Quantifying Magnetic Anisotropy of Ferroelectric Fe(II) Square‐Pyramidal Systems Using Torque Magnetometry

Advanced Science, EarlyView.
Five‐coordinate, square‐pyramidal Fe(II) complexes adopting polar, non‐centrosymmetric crystal structures exhibit exceptionally large easy‐axis magnetic anisotropy. Ligand‐driven distortions critically control the anisotropy, and the dielectric, Polarization vs Elecric field and piezo response studies confirm intrinsic polarization, positioning these ...
Vijaya Thangaraj, Gemma K. Gransbury, Deepanshu Chauhan, Dipanti Borah, Gopalan Rajaraman, Mauro Perfetti, Maheswaran Shanmugam   +6 more
wiley   +1 more source

N-heterocyclic carbene-stabilized Au13 superatom clusters

, 2018
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Ali, nazemi, Shinjiro, Takano, Tatsuya, Tsukuda, Sami, Kaappa, Paul A., Lummis, Tetyana I., Levchenko, Sami, Malola, Mina R., Narouz, Hannu, Häkkinen, Kevin G., Stamplecoskie, Seyedehgoonay, Yousefalizadeh, Cathleen, Crudden   +11 more
core   +1 more source

Hyperpolarization of [1‐13C]Ketoisocaproate‐d2 by Reversible Exchange with Parahydrogen Enables Profiling of Branched‐Chain‐Amino‐Acid Metabolism in Cellulo and in Vivo

Advanced Science, EarlyView.
We report the fast generation of biocompatible solutions of highly 13C‐hyperpolarized (≈11%) partially‐deuterated ketoisocaproate within <6 min using spin‐lock‐induced crossing and reversible exchange with parahydrogen (SLIC‐SABRE). This enables rapid detection of branched‐chain‐amino‐acid transferase 1 (BCAT1) protein expression and investigation of ...
Stefan Petersen, Philipp R. Groß, Paul M. Schmidt, Henri de Maissin, Asitan Rittinger, Robert Willing, Adriana Sacristán‐Martín, Lisa Heß, Jule Koch, Sebastian Lucas, Maxim Zaitsev, Dominik von Elverfeldt, Martin Grashei, Franz Schilling, Jan‐Bernd Hövener, André F. Martins, Max von Delius, Thomas Reinheckel, Andreas B. Schmidt   +18 more
wiley   +1 more source

Regio- and enantioselective umpolung gem-difluoroallylation of hydrazones via palladium catalysis enabled by N-heterocyclic carbene ligand

Nature Communications, 2021
Installation of difluoroalkyl groups while also imparting stereochemical information is mostly only possible with organocatalytic methods that activate carbonyls.
Shuai Huang, Fei-Fei Tong, Da-Chang Bai, Gao-Peng Zhang, Yang-Jie Jiang, Bo Zhang, Xuebing Leng, Ying-Long Guo, Xiao-Long Wan, Xingang Zhang, Chang-Hua Ding, Xue-Long Hou   +11 more
doaj   +1 more source

Highly Robust but Surface-Active: N-Heterocyclic Carbene-Stabilized Au25 Nanocluster as a Homogeneous Catalyst

, 2019
Surface organic ligands play a critical role in stabilizing atomically precise metal nanoclusters in solutions. However, it is still challenging to prepare highly robust ligated metal nanoclusters that are surface-active for liquid-phase ...
Nanfeng, Zheng, Sami, Kaappa, Hannu, Hakkinen, Hui, Shen, Guocheng, Deng, Sami, Malola, Boon K., Teo, Tongde, Tan, Yinzi, Han, Shuichao, Lin   +9 more
core   +1 more source

N-Heterocyclic carbene/Brønsted acid cooperative catalysis as a powerful tool in organic synthesis

Beilstein Journal of Organic Chemistry, 2012
The interplay between metals and N-heterocyclic carbenes (NHCs) has provided a window of opportunities for the development of novel catalytic strategies within the past few years.
Rob De Vreese, Matthias D’hooghe
doaj   +1 more source

Thiazol-2-ylidenes as N-Heterocyclic carbene ligands with enhanced electrophilicity for transition metal catalysis

Communications Chemistry, 2022
N-heterocyclic carbenes are widely exploited as ligands in transition metal catalysis, but are largely limited to N-arylimidazolylidenes. Here, the authors report on the steric and electronic properties of thiazol-2-ylidenes, demonstrating that their ...
Jin Zhang, Tao Li, Xiangyang Li, Anqi Lv, Xue Li, Zheng Wang, Ruihong Wang, Yangmin Ma, Ran Fang, Roman Szostak, Michal Szostak   +10 more
doaj   +1 more source

N-Heterocyclic Carbene Nitric Oxide Radicals

, 2018
N-Heterocyclic carbene-stabilized nitric oxide radicals were prepared by direct addition of nitric oxide to two N-heterocyclic carbenes in solution phase. The compounds were fully characterized by X-ray crystallography and EPR. The nitric oxide moiety in
Park, Junbeom, RHEE, YOUNG MIN, KIM, KIMOON, Kim, Young-Suk, Eunsung Lee, Song, Hayoung, Park J., Lee, E, Young Min Rhee, Eun, B, Kim, Yonghwi, Bit Eun, Yonghwi Kim, Kim Y., Bae, Dae Young, Won Jong Kim, Dae Young Bae, Sungho Park, Park, Sungho, Song H., KIM, WON JONG, Kimoon Kim   +21 more
core   +1 more source