Month: October 2021

An article Covalent organic framework as an efficient, metal-free, heterogeneous photocatalyst for organic transformations under visible light WOS:000467661700032 published article about GRAPHITIC CARBON NITRIDE; CO2 REDUCTION; FUNCTIONALIZATION; ORGANOCATALYSIS; CONSTRUCTION; CRYSTALLINE; CATALYSIS; OXIDATION; POLYMERS in [Li, Ziping; Zhi, Yongfeng; Liu, Xiaoming] Jilin Univ, Coll Chem, Changchun 130012, Jilin, Peoples R China; [Xia, Hong] Jilin Univ, Coll Elect Sci & Technol, State Key Lab Integrated Optoelect, Changchun 130012, Jilin, Peoples R China; [Shao, Pengpeng; Feng, Xiao] Beijing Inst Technol, Sch Chem, Beijing 100081, Peoples R China; [Shi, Zhan] Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Jilin, Peoples R China; [Li, Guosheng; Chen, Xiong] Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Fujian, Peoples R China in 2019.0, Cited 49.0. The Name is 1-(4-Nitrophenyl)ethanone. Through research, I have a further understanding and discovery of 100-19-6. Formula: C8H7NO3

Visible-light active, heterogeneous, and organic photocatalysts exhibit a more sustainable and environmentally friendly alternative to classical metal-based catalysts. Two-dimensional covalent organic frameworks (2D-COFs) with permanent porosity, columnar It-arrays and excellent stability, that can become an excellent platform for heterogeneous photocatalysis of organic transformations. Here we report a predesigned imine-based COF with electron donor and acceptor structure. And new framework possesses large surface area, high crystallinity, outstanding stability and broad absorption range in the visible-light region as well as good photoelectric response characteristics. Importantly, it was found to be a highly effective heterogeneous photocatalyst for reductive dehalogenation of phenacyl bromide derivatives and cc-alkylation of aldehydes under irradiation of visible-light. In addition, the COF gave good recyclability and could be reused after a simple separation manipulation. The current present still reveals a great prospect for 2D-COFs as metal-free, heterogeneous photo catalysts for organic transformations.

Formula: C8H7NO3. About 1-(4-Nitrophenyl)ethanone, If you have any questions, you can contact Li, ZP; Zhi, YF; Shao, PP; Xia, H; Li, GS; Feng, X; Chen, X; Shi, Z; Liu, XM or concate me.

Reference:
Benzodioxan,
,1,4-Benzodioxane | C8H8O2 – PubChem

I found the field of Chemistry; Engineering very interesting. Saw the article Synergism of Pt nanoparticles and iron oxide support for chemoselective hydrogenation of nitroarenes under mild conditions published in 2019.0. Category: benzodioxans, Reprint Addresses Zhang, WX; Liu, G (corresponding author), Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Jilin, Peoples R China.. The CAS is 100-19-6. Through research, I have a further understanding and discovery of 1-(4-Nitrophenyl)ethanone

An efficient and low-cost supported Pt catalyst for hydrogenation of niroarenes was prepared with colloid Pt precursors and alpha-Fe2O3 as a support. The catalyst with Pt content as low as 0.2 wt% exhibits high activities, chemoselectivities and stability in the hydrogenation of nitrobenzene and a variety of niroarenes. The conversion of nitrobenzene can reach 3170 mol(conv) h(-1) mol(pt)(-1) under mild conditions (30 degrees C, 5 bar), which is much higher than that of commercial Pt/C catalyst and many reported catalysts under similar reaction conditions. The spatial separation of the active sites for H-2 dissociation and hydrogenation should be responsible for the high chemoselectivity, which decreases the contact possibility between the reducible groups of nitroarenes and Pt nanoparticles. The unique surface properties of alpha-Fe2O3 play an important role in the reaction process. It provides active sites for hydrogen spillover and reactant adsorption, and ultimately completes the hydrogenation of the nitro group on the catalyst surface. (C) 2019, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.

Category: benzodioxans. About 1-(4-Nitrophenyl)ethanone, If you have any questions, you can contact Jing, P; Gan, T; Qi, H; Zheng, B; Chu, XF; Yu, GY; Yan, WF; Zou, YC; Zhang, WX; Liu, G or concate me.

Reference:
Benzodioxan,
,1,4-Benzodioxane | C8H8O2 – PubChem

Recently I am researching about SHORT-CHAIN DEHYDROGENASE/REDUCTASE; FLUORINATED PHOSPHONATES; ASYMMETRIC REDUCTION; KINETIC RESOLUTION; TRIFLUOROMETHYL KETONES; SUBSTITUENT CONSTANTS; BIOCATALYTIC CASCADE; CATALYZED HYDROLYSIS; AROMATIC-ALDEHYDES; BUILDING-BLOCKS, Saw an article supported by the National Science Foundation (NSF), Division of ChemistryNational Science Foundation (NSF) [CHE-1500076, CHE-1800574]; National Institutes of Health (NIH)United States Department of Health & Human ServicesNational Institutes of Health (NIH) – USA [SIG-1-510-RR-06307]; NSFNational Science Foundation (NSF) [CHE-0091975, MRI-0079750]; NIH, National Center for Research ResourcesUnited States Department of Health & Human ServicesNational Institutes of Health (NIH) – USANIH National Center for Research Resources (NCRR) [RR016544]. Published in GEORG THIEME VERLAG KG in STUTTGART ,Authors: Kudalkar, GP; Tiwari, VK; Lee, JD; Berkowitz, DB. The CAS is 100-19-6. Through research, I have a further understanding and discovery of 1-(4-Nitrophenyl)ethanone. Safety of 1-(4-Nitrophenyl)ethanone

Described is a physical organic study of the reduction of three sets of carbonyl compounds by the NADPH-dependent enzyme Clostridium acetobutylicum alcohol dehydrogenase (CaADH). Previous studies in our group have shown this enzyme to display broad substrate promiscuity, yet remarkable stereochemical fidelity, in the reduction of carbonyl compounds, including alpha-, beta- and gamma-keto esters ( d -stereochemistry), as well as alpha,alpha-difluorinated-beta-keto phosphonate esters ( l -stereochemistry). To better mechanistically characterize this promising dehydrogenase enzyme, we report here the results of a Hammett linear free-energy relationship (LFER) study across three distinct classes of carbonyl substrates; namely aryl aldehydes, aryl beta-keto esters and aryl trifluoromethyl ketones. Rates are measured by monitoring the decrease in NADPH fluorescence at 460 nm with time across a range of substrate concentrations for each member of each carbonyl compound class. The resulting v (0) versus [S] data are subjected to least-squares hyperbolic fitting to the Michaelis-Menton equation. Hammett plots of log( V (max) ) versus sigma (X) yield the following Hammett parameters: (i) for p -substituted aldehydes, rho = 0.99 +/- 0.10, rho = 0.40 +/- 0.09; two domains observed, (ii) for p -substituted beta-keto esters rho = 1.02 +/- 0.31, and (iii) for p -substituted aryl trifluoromethyl ketones rho = -0.97 +/- 0.12. The positive sign of rho indicated for the first two compound classes suggests that the hydride transfer from the nicotinamide cofactor is at least partially rate-limiting, whereas the negative sign of rho for the aryl trifluoromethyl ketone class suggests that dehydration of the ketone hydrate may be rate-limiting for this compound class. Consistent with this notion, examination of the (13) C NMR spectra for the set of p -substituted aryl trifluo-romethyl ketones in 2% aqueous DMSO reveals significant formation of the hydrate ( gem -diol) for this compound family, with compounds bearing the more electron-withdrawing groups showing greater degrees of hydration. This work also presents the first examples of the CaADH-mediated reduction of aryl trifluoromethyl ketones, and chiral HPLC analysis indicates that the parent compound alpha,alpha,alpha-trifluoroacetophenone is enzymatically reduced in 99% ee and 95% yield, providing the ( S )-stereoisomer, suggesting yet another compound class for which this enzyme displays high enantioselectivity.

Safety of 1-(4-Nitrophenyl)ethanone. About 1-(4-Nitrophenyl)ethanone, If you have any questions, you can contact Kudalkar, GP; Tiwari, VK; Lee, JD; Berkowitz, DB or concate me.

Reference:
Benzodioxan,
,1,4-Benzodioxane | C8H8O2 – PubChem

Quality Control of 1-(4-Nitrophenyl)ethanone. I found the field of Chemistry very interesting. Saw the article Regiodivergent Functionalization of Isoquinoline-1,3(2H,4H)-dione Derivatives via Aerobic Umpolung published in 2021.0, Reprint Addresses Tang, L; Yang, YY (corresponding author), Guizhou Med Univ, Sch Pharm, State Key Lab Funct & Applicat Med Plants, Guizhou Prov Engn Technol Res Ctr Chem Drug R&D, Guiyang 550014, Peoples R China.. The CAS is 100-19-6. Through research, I have a further understanding and discovery of 1-(4-Nitrophenyl)ethanone.

A mild and green methodology for the regiodivergent functionalization of isoquinoline-1,3(2H,4H)-diones under aerobic conditions was developed. Under a catalytic amount of base, heteroatom nucleophiles went through an imide opening/ring contraction sequence to give the thermodynamic controlled product; while carbon based nucleophiles led to kinetic controlled aldol type product. Moreover, the aldol type product was transformed into the benzo[c]phenanthridine core structures under transition metal free condition, which provides an environmental benign access to this framework.

Quality Control of 1-(4-Nitrophenyl)ethanone. About 1-(4-Nitrophenyl)ethanone, If you have any questions, you can contact Li, YX; Feng, XB; Jia, XM; Jin, H; Chen, F; Zhao, YL; Zhang, JQ; Wang, JT; Guo, B; Tang, L; Yang, YY or concate me.

Reference:
Benzodioxan,
,1,4-Benzodioxane | C8H8O2 – PubChem

Recently I am researching about ONE-POT SYNTHESIS; BIOLOGICAL EVALUATION; TAUTOMERIC STRUCTURE; EFFICIENT SYNTHESIS; FACILE SYNTHESIS; DERIVATIVES; 2,3-DIHYDRO-1H-IMIDAZO<1,2-B>PYRAZOL-2-ONES; 1-ARYL-4,4-DICHLOROBUT-3-EN-1-ONES; REDUCTION; PYRAZOLES, Saw an article supported by the Fundacion Seneca of the Comunidad Autonoma de la Region de MurciaFundacion Seneca [19249/PI/14]. Published in GEORG THIEME VERLAG KG in STUTTGART ,Authors: Guirado, A; Vera, M; Martiz, B; Rodenas, F; Sandoval, JA; Alarcon, E; Bautista, D. The CAS is 100-19-6. Through research, I have a further understanding and discovery of 1-(4-Nitrophenyl)ethanone. Product Details of 100-19-6

The synthesis of previously unattainable 2,5-disubstituted 4,5-dihydroimidazo[1,5-b]pyrazol-6-ones has been developed. Electrochemical reductions of readily available 2,2,2-trichloroethylideneacetophenones were followed by reaction with hydrazine, leading to 3-aryl-5-dichloromethyl-2-pyrazolines. These were treated with isocyanates to obtain the corresponding aminocarbonyl derivatives, which were found to be able to form an otherwise almost inaccessible imidazo[1,5-b]pyrazole ring system via a one-step reaction involving internal condensation followed by hydrogen chloride elimination and aromatization. The molecular- structures of 2-(4-methylphenyl)-5-tosyl-4,5-dihydro-imidazo[1,5-b]pyrazol-6-one, 5-dichloromethyl-N-(4-chlorophenyl)-4,5-dihydro-3-p-tolylpyrazole-1-carboxamide, and 5-(4-bromophenyl)-2-p-tolyl-4,5-dihydroimidazo[1,5-b]pyrazol-6-one were determined by X-ray crystallographic analysis.

Product Details of 100-19-6. About 1-(4-Nitrophenyl)ethanone, If you have any questions, you can contact Guirado, A; Vera, M; Martiz, B; Rodenas, F; Sandoval, JA; Alarcon, E; Bautista, D or concate me.

Reference:
Benzodioxan,
,1,4-Benzodioxane | C8H8O2 – PubChem

Recently I am researching about SINGLET OXYGEN GENERATION; TRIPLET EXCITED-STATE; VISIBLE-LIGHT ABSORPTION; N-HETEROCYCLIC CARBENE; BODIPY DYES; ELECTROGENERATED CHEMILUMINESCENCE; IRIDIUM(I) COMPLEXES; CARBON-MONOXIDE; PHOTOSENSITIZERS; LIGAND, Saw an article supported by the ARC Centre of Excellence in Exciton ScienceAustralian Research Council [CE170100026]; ANSTO [14297]; Macquarie University through the iMQRES scholarship program; Macquarie University through the receipt of a Macquarie University Research Fellowship (MQRF). Computed Properties of C14H11N. Published in ROYAL SOC CHEMISTRY in CAMBRIDGE ,Authors: Wang, DF; Malmberg, R; Pernik, I; Prasad, SKK; Roemer, M; Venkatesan, K; Schmidt, TW; Keaveney, ST; Messerle, BA. The CAS is 86-29-3. Through research, I have a further understanding and discovery of 2,2-Diphenylacetonitrile

While dual photocatalysis-transition metal catalysis strategies are extensively reported, the majority of systems feature two separate catalysts, limiting the potential for synergistic interactions between the catalytic centres. In this work we synthesised a series of tethered dual catalysts allowing us to investigate this underexplored area of dual catalysis. In particular, Ir(i) or Ir(iii) complexes were tethered to a BODIPY photocatalyst through different tethering modes. Extensive characterisation, including transient absorption spectroscopy, cyclic voltammetry and X-ray absorption spectroscopy, suggest that there are synergistic interactions between the catalysts. The tethered dual catalysts were more effective at promoting photocatalytic oxidation and Ir-catalysed dihydroalkoxylation, relative to the un-tethered species, highlighting that increases in both photocatalysis and Ir catalysis can be achieved. The potential of these catalysts was further demonstrated through novel sequential reactivity, and through switchable reactivity that is controlled by external stimuli (heat or light).

Computed Properties of C14H11N. About 2,2-Diphenylacetonitrile, If you have any questions, you can contact Wang, DF; Malmberg, R; Pernik, I; Prasad, SKK; Roemer, M; Venkatesan, K; Schmidt, TW; Keaveney, ST; Messerle, BA or concate me.

Reference:
Benzodioxan,
,1,4-Benzodioxane | C8H8O2 – PubChem

An article Uranium versus Thorium: Synthesis and Reactivity of [eta(5)-1,2,4-(Me3C)(3)C5H2](2)U[eta(2)-C2Ph2] WOS:000629388600001 published article about CHEMISTRY; COMPLEXES in [Wang, Deqiang; Ding, Wanjian; Hou, Guohua; Zi, Guofu] Beijing Normal Univ, Dept Chem, Beijing 100875, Peoples R China; [Walter, Marc D.] Tech Univ Carolo Wilhelmina Braunschweig, Inst Anorgan & Analyt Chem, Hagenring 30, D-38106 Braunschweig, Germany in 2021, Cited 121. The Name is 2,2-Diphenylacetonitrile. Through research, I have a further understanding and discovery of 86-29-3. Product Details of 86-29-3

The synthesis, electronic structure, and reactivity of a uranium metallacyclopropene were comprehensively studied. Addition of diphenylacetylene (PhC equivalent to CPh) to the uranium phosphinidene metallocene [eta(5)-1,2,4-(Me3C)(3)C5H2](2)U=P-2,4,6-tBu(3)C(6)H(2) (1) yields the stable uranium metallacyclopropene, [eta(5)-1,2,4-(Me3C)(3)C5H2](2)U[eta(2)-C2Ph2] (2). Based on density functional theory (DFT) results the 5f orbital contributions to the bonding within the metallacyclopropene U-(eta(2)-C=C) moiety increases significantly compared to the related Th-IV compound [eta(5)-1,2,4-(Me3C)(3)C5H2](2)Th[eta(2)-C2Ph2], which also results in more covalent bonds between the [eta(5)-1,2,4-(Me3C)(3)C5H2](2)U2+ and [eta(2)-C2Ph2](2-) fragments. Although the thorium and uranium complexes are structurally closely related, different reaction patterns are therefore observed. For example, 2 reacts as a masked synthon for the low-valent uranium(II) metallocene [eta(5)-1,2,4-(Me3C)(3)C5H2](2)U-II when reacted with Ph2E2 (E=S, Se), alkynes and a variety of hetero-unsaturated molecules such as imines, ketazine, bipy, nitriles, organic azides, and azo derivatives. In contrast, five-membered metallaheterocycles are accessible when 2 is treated with isothiocyanate, aldehydes, and ketones.

About 2,2-Diphenylacetonitrile, If you have any questions, you can contact Wang, DQ; Ding, WJ; Hou, GH; Zi, GF; Walter, MD or concate me.. COA of Formula: C14H11N

Reference:
Benzodioxan,
,1,4-Benzodioxane | C8H8O2 – PubChem

Recently I am researching about PHASE DEHYDRATION; SOLID ACID; DIRECT CONVERSION; SOLVENT; CELLULOSE; EFFICIENT; WATER; ETHERIFICATION; ESTERIFICATION; TRANSFORMATION, Saw an article supported by the National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [U1704251, U1662133, 21606238]; Zhengzhou High Level Talent Certificate [20180200052]; K.C. Wong Education Foundation [GJTD-2018-04]. Published in ROYAL SOC CHEMISTRY in CAMBRIDGE ,Authors: Du, YR; Xu, BH; Pan, JS; Wu, YW; Peng, XM; Wang, YF; Zhang, SJ. The CAS is 100-19-6. Through research, I have a further understanding and discovery of 1-(4-Nitrophenyl)ethanone. Computed Properties of C8H7NO3

The confinement of Bronsted acidic 1-methyl-3-(3-sulfopropyl)-1H-imidazol-3-ium hydrosulfate ([PSMIm][HSO4]) into the channel walls of two-dimensional (2D) COFs using a one-pot self-assembly strategy was achieved by incorporating an imine-linked TPB-DMTP-COF (TPB, triphenylbenzene; DMTP, dimethoxyterephthaldehyde) as the host. An appropriate loading of [PSMIm][HSO4] is crucial for the BIL-COF hybrids to maintain proper geometry in the channel and sufficient acidic sites for the sorbitol substrate and sorbitan intermediate to enter and react. The best yield of isosorbide (97%) from sorbitol to date was obtained in the presence of BIL-COF-30 as the catalyst under optimized conditions. Besides, BIL-COF-30 can be recycled for at least five runs without activity loss.

About 1-(4-Nitrophenyl)ethanone, If you have any questions, you can contact Du, YR; Xu, BH; Pan, JS; Wu, YW; Peng, XM; Wang, YF; Zhang, SJ or concate me.. Application In Synthesis of 1-(4-Nitrophenyl)ethanone

Reference:
Benzodioxan,
,1,4-Benzodioxane | C8H8O2 – PubChem

Application In Synthesis of 1-(4-Nitrophenyl)ethanone. In 2019.0 RSC ADV published article about C-H AMINATION; ONE-POT SYNTHESIS; ANILINE RADICAL CATIONS; ONE-STEP SYNTHESIS; ALPHA-KETOAMIDES; METAL-FREE; SULFONYL AZIDES; OXIDATIVE SYNTHESIS; SECONDARY-AMINES; FACILE ACCESS in [Xie, Dianke; He, Wei; Xiao, Jiang; Wu, Yao; Guo, Yongjia; Liu, Qiang; Guo, Cancheng] Hunan Univ, State Key Lab Chemo Biosensing & Chemometr, Coll Chem & Chem Engn, Changsha 410082, Hunan, Peoples R China in 2019.0, Cited 121.0. The Name is 1-(4-Nitrophenyl)ethanone. Through research, I have a further understanding and discovery of 100-19-6.

A convenient method for the synthesis of 2-oxo-acetamidines from methyl ketones using aromatic amines and DMF as nitrogen sources is reported via copper-catalyzed C(sp(3))-H amidination. Various methyl ketones react readily with aromatic amines and DMF, producing 2-oxo-acetamidines in yields of 47 to 92%. This protocol features the simultaneous formation of C-N and C?N bonds using DMF and aromatic amines as two different nitrogen sources. It thus provides an efficient approach to construct acyclic amidines via three C(sp(3))-H bond amidination. Based on the preliminary experiments, a plausible mechanism of this transformation is disclosed.

Application In Synthesis of 1-(4-Nitrophenyl)ethanone. About 1-(4-Nitrophenyl)ethanone, If you have any questions, you can contact Xie, DK; He, W; Xiao, J; Wu, Y; Guo, YJ; Liu, Q; Guo, CC or concate me.

Reference:
Benzodioxan,
,1,4-Benzodioxane | C8H8O2 – PubChem

Product Details of 100-19-6. Nguyen, TT; Tran, PH in [The Thai Nguyen; Phuong Hoang Tran] Univ Sci, Fac Chem, Dept Organ Chem, Ho Chi Minh City 721337, Vietnam; [The Thai Nguyen; Phuong Hoang Tran] Vietnam Natl Univ, Ho Chi Minh City 721337, Vietnam published One-pot multicomponent synthesis of thieno[2,3-b]indoles catalyzed by a magnetic nanoparticle-supported [Urea](4)[ZnCl2] deep eutectic solvent in 2020.0, Cited 35.0. The Name is 1-(4-Nitrophenyl)ethanone. Through research, I have a further understanding and discovery of 100-19-6.

In this study, we have developed the synthesis of thieno[2,3-b]indole dyes via a multicomponent reaction of cheap and available reagents such as sulfur, acetophenones, and indoles using a magnetic nanoparticle-supported [Urea](4)[ZnCl2] deep eutectic solvent as a green catalyst. The synthesis of a series of diversely functionalized thieno[2,3-b]indole has been successfully performed in a one-pot reaction. Among a total of 25 compounds synthesized, there are 21 new compounds with full characterization such as FT-IR, H-1 and C-13 NMR, HRMS (ESI). Due to the deep eutectic solvent coated surface of the magnetic nanoparticles, the catalyst could be recovered by an external magnet and reused in five consecutive runs without a considerable decrease in catalytic activity.

Product Details of 100-19-6. About 1-(4-Nitrophenyl)ethanone, If you have any questions, you can contact Nguyen, TT; Tran, PH or concate me.

Reference:
Benzodioxan,
,1,4-Benzodioxane | C8H8O2 – PubChem