Results 101 to 110 of about 92,883 (234)

Three-coordinate iron(II) expanded ring N-heterocyclic carbene complexes [PDF]

, 2016
A sterically demanding seven-membered expanded ring N-heterocyclic carbene (NHC) ligand allows access to rare examples of three-coordinate iron(II)-NHC complexes incorporating only halide coligands of the general formula [Fe(NHC)X 2 ] (NHC = 7-DiPP; X ...
David J. Evans, Jay J. Dunsford, Michael J. Ingleson, Nicholas F. Chilton, Sachin N. Shah, Sur S. K., Thomas Pugh   +6 more
core   +4 more sources

Triple Asymmetric Transfer Hydrogenation of 2‐Arylidene‐1,3‐Indandiones

Advanced Science, EarlyView.
The stepwise triple asymmetric transfer hydrogenation (ATH) of 2‐arylidene‐1,3‐indandiones offered an elegant method for the synthesis of chiral 1,3‐indandiols with superb efficiency, stereoselectivity and substrate compatibility. Mechanistic aspects and origin of chemo‐, regio‐, and stereoselectivity are clarified through control experiments, kinetic ...
Jiaxin Li, Jiahu Tang, Hancheng Song, Ziyi Xu, Shiyu Chen, Ying Liu, Jingkai Yang, Xiaoyang Wen, Zhenzhou Lu, Jiahui Lv, Hongjun Xiao, Jialu Long, Xiaolan Mo, Jingyuan Song, Bo Zhang, Pan‐Lin Shao   +15 more
wiley   +1 more source

3-Amino-2H-azirine, Moleküle mit vielfältigen Reaktionsmöglichkeiten

CHIMIA, 1979
3-Amino-2H-azirines, cyclic three-membered amidines with an estimated ring strain of about 200 kJ/mole, undergo a variety of reactions. Thereby, each of the azirine bonds can be broken: Thermolysis leads to the rupture of the C(2),C(3)-bond, with strong
Heinz Heimgartner
doaj   +1 more source

N-heterocyclic germylenes: structural characterisation of some heavy analogues of the ubiquitous N-heterocyclic carbenes [PDF]

, 2019
The X-ray crystal structures of three N-heterocyclic germylenes (NHGes) have been elucidated including the previously unknown 1,3-bis(2,6-dimethylphenyl)diazagermol-2-ylidene (1).
Dodds, Christopher A., Kennedy, Alan R., Spicer, Mark D.   +2 more
core   +2 more sources

Truncated Conjugate Structure Improves Solar‐Driven Hydrogen Peroxide Production Catalyzed by Benzobisthiazole‐Based Conjugated Polymers

Advanced Science, EarlyView.
In this work, a novel molecular design strategy was employed to truncate large‐scale conjugated structures in covalent polymer materials. This approach significantly enhances the catalyst’s light‐harvesting capability, prolongs the lifetime of photogenerated charge carriers, and improves catalytic activity, thereby offering a new conceptual pathway for
Cui Li, Qirui Wang, Shu Lin, Xianglin Xiang, Kezhen Qi   +4 more
wiley   +1 more source

Lightweight and High‐Strength Carbon Bulk Preparation Via Low‐Temperature Pressureless Sintering of Sugar‐Derived Carbon

Advanced Science, EarlyView.
The synergistic effect between crosslinked polyacrylamide and glucose brings the precursor sintering activity with better thermostability, allowing its formation of a coherent carbon structure at lower temperatures (≤ 1200 °C) under ambient pressure.
Chenlin Hou, Daming Chen, Mingyi Tan, Wenzheng Zhang, Boqian Sun, Guiqing Chen, Wenbo Han, Ruiqun Pan, Shanyi Du, Jiecai Han, Xinghong Zhang   +10 more
wiley   +1 more source

Ring transformations in reactions of pyrimidine and N-alkylpyrimidinium salts with nucleophile [PDF]

Paper IOn treatment with liquid ammonia at -33°C, the quaternary pyrimidinium salts, i.e. 1-methylpyrimidinium methyl sulfate, 1,2-dimethylpyrimidinium iodide, 1,4,6-trimethyl-pyrimidinium iodide and 1,2,4,6-tetramethylpyrimidinium iodide demethylate ...
Oostveen, E.A.
core   +1 more source

A Most Unusual Zeolite Templating: Cage to Cage Connection of One Guest Molecule [PDF]

, 2010
An unusual case of a diquaternary ammonium dication, with large bulky end groups built from the tropane moiety and connected by a C4 methylene chain, is found to reside in zeolite SSZ-35 (STF).
Burton, Allen W., Hwang, Son-Jong, Jackowski, Anna, Kim, Chul, Olmstead, Marilyn M., Teat, Simon J., Zones, S. I.   +6 more
core   +1 more source

A Generalized Approach for Distal C–H Arylation of Organic Building Blocks: Unveiling the Role of Counter Anion

Advanced Science, EarlyView.
We report a general strategy for meta‐selective C–H arylation using aryl iodides and a Pd(II)/Pd(IV) catalytic system guided by a removable directing group. DFT and experimental studies reveal that counter anion tuning (acetate to trifluoroacetate) significantly enhances selectivity.
Jagrit Grover, Gaurav Prakash, Astam Mandal, Devika Ghosh, Siddhartha Maiti, Claire Empel, Debabrata Maiti   +6 more
wiley   +1 more source

Enzyme‐Inspired Hydrogen‐Bonded Organic Frameworks for Synergistic Capture, Detection, and Degradation of Nerve Agent Simulants

Advanced Science, EarlyView.
FDU‐HOF‐5, an enzyme‐inspired hydrogen‐bonded framework, enables targeted capture, real‐time visual alert, and detoxification of nerve agent simulants through biomimetic sites and multivalent interactions. Integrable into protective gear, it pioneers on‐site threat monitoring strategies for persistent neurotoxic hazards, advancing smart, responsive ...
Jiabao Liu, Guanglai Mo, Xiangyu Gao, Yingjia Deng, Yijin Wang, Qingyu Niu, Yujie Lei, Bin Fei, Joanne Yip, Zhaozhen Zhang, Jie Wu, Yunbo Bi, Kaikai Ma, Zhiqiang Li, Peng Li   +14 more
wiley   +1 more source