29528-30-1Relevant academic research and scientific papers
Redox-Active Ligand Assisted Catalytic Water Oxidation by a RuIV=O Intermediate
Chen, Qi-Fa,Guo, Yu-Hua,Shi, Jing,Xie, Fei,Zhang, Ming-Tian
, p. 4000 - 4008 (2020)
Water splitting is one of the most promising solutions for storing solar energy in a chemical bond. Water oxidation is still the bottleneck step because of its inherent difficulty and the limited understanding of the O?O bond formation mechanism. Molecular catalysts provide a platform for understanding this process in depth and have received wide attention since the first Ru-based catalyst was reported in 1982. RuV=O is considered a key intermediate to initiate the O?O bond formation through either a water nucleophilic attack (WNA) pathway or a bimolecular coupling (I2M) pathway. Herein, we report a Ru-based catalyst that displays water oxidation reactivity with RuIV=(O) with the help of a redox-active ligand at pH 7.0. The results of electrochemical studies and DFT calculations disclose that ligand oxidation could significantly improve the reactivity of RuIV=O toward water oxidation. Under these conditions, sustained water oxidation catalysis occurs at reasonable rates with low overpotential (ca. 183 mV).
Facile formation of imidazolinium salt by reaction of corresponding diamine and trimethyl orthoformate in 1,1,1,3,3,3-hexafluoroisopropanol
Usui, Kensuke,Nakada, Masahisa
, p. 1539 - 1551 (2014)
The preparation of imidazolinium salts, which can be used as precursors of pincer-type N-heterocyclic carbene ligands, is described. The formation of imidazolinium salts under standard conditions is difficult, but they have been successfully synthesized by reaction of the corresponding diamines and trimethyl orthoformate in 1,1,1,3,3,3-hexafluoroisopropanol. The synthesis of new chiral C2 symmetric imidazolinium salts is also described.
Ruthenium-catalyzed: Ortho -selective CAr-H amination of heteroaryl arenes with di- tert -butyldiaziridinone
Gou, Xue-Ya,Li, Yuke,Wang, Xin-Gang,Liu, Hong-Chao,Zhang, Bo-Sheng,Zhao, Jia-Hui,Zhou, Zhao-Zhao,Liang, Yong-Min
, p. 5487 - 5490 (2019)
Application of an oxidative amination reagent (di-tert-butyldiaziridinone) to the Ru3(CO)12-catalyzed ortho-selective CAr-H amination reaction is described. This strategy shows good functional group compatibility with vari
Inhibitors Targeting STAT5 Signaling in Myeloid Leukemias: New Tetrahydroquinoline Derivatives with Improved Antileukemic Potential
Polomski, Marion,Brachet-Botineau, Marie,Juen, Ludovic,Viaud-Massuard, Marie-Claude,Gouilleux, Fabrice,Prié, Gildas
supporting information, p. 1034 - 1046 (2021/01/25)
Signal transducers and activators of transcription 5A and 5B (STAT5A and STAT5B) are two closely related STAT family members that are crucial downstream effectors of tyrosine kinase oncoproteins such as FLT3-ITD in acute myeloid leukemia (AML) and BCR-ABL
COMPOUNDS AND METHODS FOR TREATING CANCER
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Paragraph 0190; 0364; 0367-0368, (2020/12/19)
Substituted cinnamamide compounds and analogs, methods of making such compounds, pharmaceutical compositions and medicaments comprising such compounds, and methods of using such compounds to treat, prevent or ameliorate cancer are provided.
Rhodium(III)-catalyzed chelation-assisted C-H imidation of arenes via umpolung of the imidating reagent
Gao, Hui,Li, Xingwei,Sun, Jiaqiong,Xu, Youwei,Zheng, Guangfan,Zhou, Xukai
, p. 1723 - 1733 (2020/05/05)
Rh(III)-catalyzed, chelation-assisted oxidative C?H imidation of arenes with N?H imide have been realized using PhI(OAc)2 as an oxidant. This transformation exhibits a broad substrate scope and tolerates various functional groups. The reaction proceeded via in situ generation of an iodine(III) imido. DFT calculations suggest that this oxidative imidaton system proceeds via a Rh(III)-Rh(V)-Rh(III) pathway.
Phenanthridine Derivatives and organic light-emitting diode including the same
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Paragraph 0199; 0206-0208; 0224; 0234-0236, (2019/11/23)
PURPOSE: A phenanthridine derivative compound is provided to obatin an organic light emitting diode with excellent light emitting property. CONSTITUTION: A phenanthridine derivative compound is denoted by chemical formula 1 or 2. An organic light emitting diode contains an anode, a cathode, and the phenanthridine derivative compounds inserted between the anode and cathode. The organic light emitting diode further contains a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, or an electron injection layer formed by monomer deposition or solution process.
Lewis Acid/Br?nsted Acid Controlled Pd(II)-Catalyzed Chemodivergent Functionalization of C(sp2)-H Bonds with N-(Arylthio)i(a)mides
Chaitanya, Manthena,Anbarasan, Pazhamalai
, p. 3362 - 3366 (2018/06/11)
An efficient and chemodivergent palladium-catalyzed thiolation (C-S) and imidation (C-N) of directing group-assisted C-H bonds have been accomplished employing N-(arylthio)imides in combination with either Br?nsted acid or Lewis acid, respectively. Notable features of the developed methodologies include excellent diversity, high functional group tolerance, wide substrate scope, and use of a single N-S reagent. Importantly, the developed hypothesis was also successfully extended to the amidation of C-H bonds. A plausible mechanistic pathway was proposed based on the preliminary mechanistic study.
Discovery of 2-(pyridin-2-yl)aniline as a directing group for the sp2 C-H bond amination mediated by cupric acetate
Zhao, Hong-Yi,Wang, Hui-Yan,Mao, Shuai,Xin, Minhang,Zhang, Hao,Zhang, San-Qi
, p. 6622 - 6631 (2017/08/16)
2-(Pyridin-2-yl) aniline was designed as a new, removable directing group in promoting C-H amination mediated by cupric acetate. Employing this auxiliary, the β-C(sp2)-H bonds of benzamide derivatives can be effectively aminated with a variety of amines in moderate to good yields with good functional group tolerance in air. In addition, the quinazolinone derivatives were isolated from the reaction mixture of N-(2-(pyridin-2-yl)phenyl)benzamide with formamide or 5-nitroindole. The corresponding mechanism is discussed. These results indicate that 2-(pyridine-2-yl)aniline can serve as a directing group.
Visible-light-induced regioselective synthesis of polyheteroaromatic compounds
Chatterjee, Tanmay,Choi, Myung Gil,Kim, Jun,Chang, Suk-Kyu,Cho, Eun Jin
supporting information, p. 4203 - 4206 (2016/03/19)
A method for visible-light-induced synthesis of polyheteroaromatics from 2-heteroaryl-substituted anilines and heteroarylalkynes was developed. The process, which uses fac-Ir(ppy)3 as the photocatalyst and tBuONO as the diazotization reagent, is highly regioselective.
