Results 61 to 70 of about 27,691 (270)

Spatial Structural Self‐Regulation Engineering Increases Close Pores of Starch‐Derived Hard Carbon for Sodium‐Ion Batteries

Carbon Energy, EarlyView.
Spatial structural self‐regulation strategy stimulates the conversion of the hydroxy group (–OH) in starch into carbonyl (–C=O) within a stable three‐dimensional cross‐linking structure. This structure not only reduces the production of water and volatile products, thereby preventing foaming during pyrolysis and improving carbon yield, but also ...
Feng Wu, Guiyu Liu, Yulin Cao, Zhiqiang Wang, Hongzhi Wang, Chun Zeng, Yanfang Wang, Yongcong Huang, Fangchang Zhang, Zhan Wang, Xuhui Li, Kuan Jing, Wenjun Shi, Yingzhi Li, Zhouguang Lu, Hua Cheng   +15 more
wiley   +1 more source

Application of Hosomi-Sakurai allylation reaction in total synthesis of biologically active natural products

Frontiers in Chemistry
The Hosomi–Sakurai allylation reaction has been widely applied in the total synthesis of biologically active natural products, especially in synthesising complex polycyclic compounds containing multi-stereogenic centres since its discovery in 1976.
Justice Akwensi, Robert T. Kumah, Dorcas Osei-Safo, Richard K. Amewu   +3 more
doaj   +1 more source

Tandem Electrolysers for High‐Efficiency CO2‐to‐Acetate Conversion Driven by Full‐Spectrum Solar Energy

Carbon Energy, EarlyView.
A full‐spectrum solar‐driven tandem electrolysis system enables efficient CO2‐to‐acetate conversion by spectrally splitting sunlight and coupling high‐temperature SOEC CO2‐to‐CO electrolysis with ambient CO reduction. The integrated design achieves a solar‐to‐acetate efficiency of 15.8%, demonstrating effective energy‐quality matching for solar carbon ...
Shangchun Su, Zongkang Wang, Jianhong Liu, Xiangyu Liu, Zhan Wu, Zhenyu Tian, Feifei Wang, Wenjia Li, Jian Jin   +8 more
wiley   +1 more source

Synthesis of 2-substituted tetraphenylenes via transition-metal-catalyzed derivatization of tetraphenylene

Beilstein Journal of Organic Chemistry, 2016
A new strategy for the synthesis of 2-substituted tetraphenylenes through a transition-metal-catalyzed derivatization has been developed. Three types of functionalities, including OAc, X (Cl, Br, I) and carbonyl, were introduced onto tetraphenylene ...
Shulei Pan, Hang Jiang, Yanghui Zhang, Yu Zhang, Dushen Chen   +4 more
doaj   +1 more source

Cross‐Carboxylation of Methanol and Other Alcohols With CO2 Into Asymmetric Alkyl Methyl Carbonates Over a CeO2 Catalyst

Chemistry – A European Journal, EarlyView.
One‐pot synthesis of asymmetric organic carbonates from CO2, methanol, and other alcohols was demonstrated in the presence of CeO2 catalyst and 2‐cyanopyridine dehydrant. This reaction proceeded through two reaction pathways—direct route via cross‐carboxylation and indirect route via production of DMC and subsequent transesterification.
Yuan Li, Zechen Li, Mizuho Yabushita, Yoshinao Nakagawa, Keiichi Tomishige   +4 more
wiley   +1 more source

Synthesis of conformationally restricted glutamate and glutamine derivatives from carbonylation of orthopalladated phenylglycine derivatives

Beilstein Journal of Organic Chemistry, 2012
A new method for the regioselective synthesis of 2-alkoxycarbonyl- and 2-(aminocarbonyl)phenylglycinate methyl esters has been developed. The reaction of the orthopalladated complex [Pd(μ-Cl)(C6H4(CH(CO2Me)NMe2)-2)]2 (1) with nucleophiles HNu under a CO ...
Esteban P. Urriolabeitia, Eduardo Laga, Carlos Cativiela   +2 more
doaj   +1 more source

Realizing Metal-Free Carbene-Catalyzed Carbonylation Reactions with CO.

Journal of the American Chemical Society, 2020
Many organic and main-group compounds, usually acids or bases, can accelerate chemical reactions when used in substoichiometric quantities, a process known as organocatalysis.
Jesse L. Peltier, Eder Tomás‐Mendivil, Daniel R. Tolentino, M. Hansmann, Rodolphe Jazzar, G. Bertrand   +5 more
semanticscholar   +1 more source

Mechanochemical Amidation Mediated by 1,1’‐Oxalyldiimidazole for the Synthesis of Agrochemicals

Chemistry – A European Journal, EarlyView.
Mechanochemical amidation using 1,1'‐oxalyldiimidazole (ODI) overcomes limitations of 1,1’‐carbonyl diimidazole (CDI) as coupling agent by enabling the efficient mechanochemical synthesis of three marketed agrochemicals from deactivated carboxylic acids.
Andrea Casagrande, Rubén Solorzano‐Rodriguez, Maria Carta, Francesco Delogu, Joris Vezzani, Allan Niidu, Evelina Colacino   +6 more
wiley   +1 more source

Development of methodologies for reactions involving gases as reagents: microwave heating and conventionally-heated continuous-flow processing as examples

Green Processing and Synthesis, 2012
Microwave (MW) heating and conventionallyheated continuous-flow processing have emerged as viable alternatives to the traditional methods of preparing organic compounds.
Mercadante Michael A., Leadbeater Nicholas E.   +1 more
doaj   +1 more source

The development of 11C-carbonylation chemistry: A systematic view.

Nuclear Medicine and Biology, 2020
The prospects for using carbon-11 labelled compounds in molecular imaging has improved with the development of diverse synthesis methods, including 11C-carbonylations and refined techniques to handle [11C]carbon monoxide at a nanomole scale. Facilitating
J. Eriksson, G. Antoni, B. Långström, O. Itsenko   +3 more
semanticscholar   +1 more source