Results 51 to 60 of about 62,615 (146)

Revitalizing reformatsky reagent for catalyst-free direct alkylation with unactivated alkyl halides

Nature Communications
Reformatsky reagents are commonly employed with activated electrophiles, such as aldehydes, ketones, or activated alkyl halides. However, their limited nucleophilicity remains a considerable challenge for direct reactions with unactivated alkyl halides ...
Lingpu Meng, Zimeng Li, Tian Zhang, Yi Xu, Yangxiao Li, Botao Wu, Qilong Shen   +6 more
doaj   +1 more source

N-(2-Fluoro-2-propen-1-yl)-5-(trifluoromethyl)-2-pyridinecarboxamide

Molbank
Herein, the synthesis and crystallization of the unreported compound N-(2-fluoro-2-propen-1-yl)-5-(trifluoromethyl)-2-pyridinecarboxamide is achieved via amide coupling with a (2-fluoroallyl)ammonium salt.
Taylor Semeniuk, Jean-Denys Hamel
doaj   +1 more source

BrCF2CN for photocatalytic cyanodifluoromethylation

Nature Communications
Considering the unique electronic properties of the CF2 and the CN groups, the CF2CN group has significant potential in drug and agrochemical development, as well as material sciences. However, incorporating a CF2CN group remains a considerable challenge.
Xin-Jun Yang, Jin-Hong Lin, Ji-Chang Xiao   +2 more
doaj   +1 more source

Post-oxidation of all-organic electrocatalysts to promote O−O coupling in water oxidation

Nature Communications
Covalently bonded metal-free electrocatalysts exhibit significant potential for sustainable energy technologies, yet their performances remain unsatisfactory compared with metal-based catalysts.
Chun-Ting He, Li-Hong Yu, Haiming Liu, Qing Wang, Zi-Ming Ye, Jia Zhang, Li-Dong Wang, Mei-Qian He, Xue-Feng Zhang, Hong-Gang Du, Zi-Wei Lu, Jian Yang, Hai-Hua Huang, Xiao-Ming Chen   +13 more
doaj   +1 more source

Synthesis of cyclic carbonates by CO2 cycloaddition with epoxides: recent advances, challenges, and perspectives

Green Chemical Engineering
The catalytic conversion of CO2 into functionalized chemical products has evolved into a pivotal scientific frontier, garnering substantial research investment from multidisciplinary domains.
Decun Luo, Shilong Xie, Zhun Hu, Chun-Ran Chang   +3 more
doaj   +1 more source

Copper difluorocarbene-involved catalytic gem-difluoropropargylation

Nature Communications
The use of metal for catalytic difluorocarbene transfer reactions has long been hindered by the lack of understanding of metal difluorocarbene chemistry, despite the potential implications for medicinal chemistry and advanced materials science.
Xin Zeng, Shi-Ping Sun, Hai-Yang Zhao, Xingang Zhang   +3 more
doaj   +1 more source

Transition state structure detection with machine learningś

npj Computational Materials
Transition structure calculations via quantum chemistry methods have become a staple in modern chemical reaction research. Yet, success rates in optimizing transition structures rely heavily on rational initial guesses and expert supervision.
Yitao Si, Yiding Ma, Tao Yu, Yifan Wu, Yingzhe Liu, Weipeng Lai, Zhixiang Zhang, Jinwen Shi, Liejin Guo, Oleg V. Prezhdo, Maochang Liu   +10 more
doaj   +1 more source

Engineering p‐Orbital States via Molecular Modules in All‐Organic Electrocatalysts toward Direct Water Oxidation

Advanced Science
Oxygen evolution reaction (OER) is an indispensable anode reaction for sustainable hydrogen production from water electrolysis, yet overreliance on metal‐based catalysts featured with vibrant d‐electrons.
Li‐Hong Yu, Xue‐Feng Zhang, Zi‐Ming Ye, Hong‐Gang Du, Li‐Dong Wang, Ping‐Ping Xu, Yuhai Dou, Li‐Ming Cao, Chun‐Ting He   +8 more
doaj   +1 more source

Fluorine Minerals [PDF]

Science, 1883
openaire   +2 more sources

Elucidating Unknown Organofluorine in Municipal Wastewater: A Mass Balance Approach including Fluorinated Pharmaceuticals. [PDF]

Environ Sci Technol
Larsson P, Kärrman A, Yeung LWY.
europepmc   +1 more source