4846-21-3Relevant articles and documents
Unexpected Sole Enol-Form Emission of 2-(2′-Hydroxyphenyl)oxazoles for Highly Efficient Deep-Blue-Emitting Organic Electroluminescent Devices
Li, Bijin,Tang, Guoqiang,Zhou, Linsen,Wu, Di,Lan, Jingbo,Zhou, Liang,Lu, Zhiyun,You, Jingsong
, (2017)
Considerable efforts have been devoted to the development of highly efficient blue light-emitting materials. However, deep-blue fluorescence materials that can satisfy the Commission Internationale de l'Eclairage (CIE) coordinates of (0.14, 0.08) of the N
Determination of band edges and their influences on photocatalytic reduction of nitrobenzene by bulk and exfoliated g-C3N4
Challagulla, Swapna,Payra, Soumitra,Chakraborty, Chanchal,Roy, Sounak
, p. 3174 - 3183 (2019)
Thermally and chemically exfoliated metal-free semiconducting g-C3N4 are synthesized from bulk g-C3N4. Thorough characterization of the synthesized materials is performed with the help of XRD, FTIR, FE-SEM, PL, surface area analysis and DRS to probe differences in structural, morphological and optical properties between thermally and chemically exfoliated g-C3N4. The synthesized materials are exposed to light for photocatalytic reduction of nitrobenzene. The complete reduction reaction mechanism and product selectivity over the synthesized catalysts are studied in this report. The rate of reduction of nitrobenzene is found to be higher with thermally exfoliated g-C3N4, and the selectivity of aniline is found to be higher in the case of chemical exfoliated g-C3N4. The differences in the reactivity are explained in terms of structure, surface morphologies and band edge positions.
Hexafluoroisopropanol (HFIP)-prompted rearrangement of N-phenoxysulfonamides for the direct assembly of ortho-sulfonamide phenols: A combined experimental and computational study
Wang, Yi,Chen, Xiaoli,Lin, Shuang,Gao, Hui,Liu, Fu-Xiaomin,Zhou, Zhi,Yi, Wei
supporting information, (2022/01/08)
ortho-Sulfonamide phenols represent a class of attractive structural motifs in medicinal and synthetic chemistry. Herein an efficient metal-free rearrangement reaction has been developed for the construction of ortho-sulfonamide phenols via HFIP-prompted
Total Synthesis of (±)-Impatien A via Aza-Heck Cyclization
Korch, Katerina M.,Watson, Donald A.
supporting information, p. 7285 - 7289 (2021/09/14)
The first total synthesis of the natural product impatien A is described. This concise synthesis features an aza-Heck cyclization to construct the complex spirocyclic ring system and provides a rare example of the use of aza-Heck cyclizations in complex molecule synthesis. To enable this key cyclization of an electrophilic nitrogen atom with a tetrasubstituted alkene, we utilized high-throughput experimentation to identify a new ligand and ultimately deliver impatien A in seven steps from known compounds.
An Activity-Based Sensing Fluorogenic Probe for Monitoring Ethylene in Living Cells and Plants
Chen, Yiliang,Guo, Duojing,Jing, Maofeng,Li, Ji,Li, Yu,Liu, Hao,Wang, Biao,Wei, Lirong,Yan, Wei,Ye, Yonghao,Yu, Na,Zhao, Jing,Zheng, Ying
supporting information, p. 21934 - 21942 (2021/08/30)
Ethylene (ET) is an important gaseous plant hormone. It is highly desirable to develop fluorescent probes for monitoring ethylene in living cells. We report an efficient RhIII-catalysed coupling of N-phenoxyacetamides to ethylene in the presenc
Synthesis of ortho-phenolic sulfilimines via an intermolecular sulfur atom transfer cascade reaction
Ren, Yan,Song, Yinan,Xiong, Feng,Xu, Shaojian,Zhang, Linxing,Zhang, Xinhao,Zuo, Yingying
supporting information, p. 3799 - 3803 (2020/06/08)
To expand the toolbox for the synthesis of ortho-phenolic sulfilimines, sigmatropic rearrangements were introduced to the field of sulfilimine chemistry. Herein we report a N-H sulfenylation/[2,3]-sigmatropic rearrangement cascade reaction. This mild reaction enables commercially available thiols to serve as the sulfenylation reagent and generates water as the sole byproduct. Moreover, the reaction has a wide substrate scope and can be conducted on a gram scale with excellent reaction efficiency.
Rhodium(III)-Catalyzed Enantio- and Diastereoselective C?H Cyclopropylation of N-Phenoxylsulfonamides: Combined Experimental and Computational Studies
Zheng, Guangfan,Zhou, Zhi,Zhu, Guoxun,Zhai, Shuailei,Xu, Huiying,Duan, Xujing,Yi, Wei,Li, Xingwei
supporting information, p. 2890 - 2896 (2020/01/24)
Cyclopropane rings are a prominent structural motif in biologically active molecules. Enantio- and diastereoselective construction of cyclopropanes through C?H activation of arenes and coupling with readily available cyclopropenes is highly appealing but
Pyrazole formaldoxime ether compound as well as preparation method and application thereof
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Paragraph 0055-0057, (2020/09/09)
The invention discloses a pyrazole formaldoxime ether compound as well as a preparation method and application thereof. The structural formula of the pyrazole formaldoxime ether compound is shown as the following formula I shown in the specification, wherein in the formula I, R1 represents at least one of hydrogen, C1-C6 alkyl, C1-C6 alkyl monosubstituted by halogen and C1-C6 alkyl polysubstitutedby halogen; R2 represents at least one of hydrogen, C1-C6 alkyl, C1-C6 alkyl monosubstituted or polysubstituted by halogen, aryl and substituted aryl; R3 represents at least one of phenyl, benzyl, substituted benzyl, substituted phenyl, an unsubstituted nitrogen and/or oxygen-containing heterocyclic group, a substituted nitrogen and/or oxygen-containing heterocyclic group, an unsubstituted C3-C8cycloalkyl group and a substituted C3-C8 cycloalkyl group. The pyrazole formaldoxime ether compound takes oxime ether as a main skeleton structure, is simple in preparation method, can be used for efficiently preventing and treating fungal diseases and oomycete diseases of farmland crops, and can be used for disease resistance management.
Dual Directing-Groups-Assisted Redox-Neutral Annulation and Ring Opening of N-Aryloxyacetamides with 1-Alkynylcyclobutanols via Rhodium(III)-Catalyzed C-H/C-C Activations
Pan, Jin-Long,Liu, Chang,Chen, Chao,Liu, Tuan-Qing,Wang, Man,Sun, Zhenliang,Zhang, Shu-Yu
supporting information, p. 2823 - 2827 (2019/04/30)
A cascade [3 + 2] annulation and ring opening of N-aryloxyacetamides with 1-alkynylcyclobutanols via Rh(III)-catalyzed redox-neutral C-H/C-C activations using internal oxidative O-NHAc and -OH as the dual directing groups has been achieved. This reaction provided an efficient and regioselective approach to benzofuran derivatives with good functional group compatibility and high yields.
An internal oxidant-directing strategy enabling transition metal-free C–S bond ligation
Zuo, Yingying,Xiong, Feng,Zhao, Jing
supporting information, p. 4174 - 4179 (2019/05/24)
Organic sulfur compounds have broad applications in biology, medicine and material sciences and intensive efforts have been devoted to developing mild and general C–S bond-forming methods. However, a mild, transition-metal-free, direct C–H bond functionalization method remains elusive. Here, we report the use of an internal oxidant-directing strategy to achieve this goal. The cascade reactions described here show excellent chemoselectivity and a wide substrate scope for both oxyamines and sulfenylation reagents. This study enlarges the synthesis toolbox for preparing structurally diverse sulfilimines under mild conditions.