Day: October 22, 2021

Tsai, CC; Sandford, C; Wu, T; Chen, BY; Sigman, MS; Toste, FD in [Tsai, Cheng-Che; Wu, Tao; Chen, Buyun; Toste, F. Dean] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA; [Sandford, Christopher; Sigman, Matthew S.] Univ Utah, Dept Chem, 315 South 1400 East, Salt Lake City, UT 84112 USA; [Tsai, Cheng-Che] Tunghai Univ, Dept Chem, Taichung 40704, Taiwan published Enantioselective Intramolecular Allylic Substitution via Synergistic Palladium/Chiral Phosphoric Acid Catalysis: Insight into Stereoinduction through Statistical Modeling in 2020, Cited 82. COA of Formula: C14H11N. The Name is 2,2-Diphenylacetonitrile. Through research, I have a further understanding and discovery of 86-29-3.

The mode of asymmetric induction in an enantioselective intramolecular allylic substitution reaction catalyzed by a combination of palladium and a chiral phosphoric acid was investigated by a combined experimental and statistical modeling approach. Experiments to probe nonlinear effects, the reactivity of deuterium-labeled substrates, and control experiments revealed that nucleophilic attack to the pi-allylpalladium intermediate is the enantio-determining step, in which the chiral phosphate anion is involved in stereoinduction. Using multivariable linear regression analysis, we determined that multiple noncovalent interactions with the chiral environment of the phosphate anion are integral to enantiocontrol in the transition state. The synthetic protocol to form chiral pyrrolidines was further applied to the asymmetric construction of C-O bonds at fully substituted carbon centers in the synthesis of chiral 2,2-disubstituted benzomorpholines.

About 2,2-Diphenylacetonitrile, If you have any questions, you can contact Tsai, CC; Sandford, C; Wu, T; Chen, BY; Sigman, MS; Toste, FD or concate me.. Computed Properties of C14H11N

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

I found the field of Chemistry very interesting. Saw the article Iodine-promoted Intermolecular Dehydrogenation Diamination: Synthesis of Unsymmetrical ,-Diamido Ketones published in 2019. SDS of cas: 100-19-6, Reprint Addresses Li, YJ (corresponding author), Zhejiang Univ Technol, Dept Chem & Chem Engn, State Key Lab Breeding Base Green Chem Synth Tech, Hangzhou 310032, Zhejiang, Peoples R China.. The CAS is 100-19-6. Through research, I have a further understanding and discovery of 1-(4-Nitrophenyl)ethanone

Iodine-promoted direct diamination of ,-unsaturated ketone to form two C-N bonds has been developed starting from chalcone and secondary amine. This reaction was performed in THF at 50 degrees C in the presence of I-2 and K2CO3. The protocol is metal-free, operationally simple and carried out under mild conditions, providing an effective new way for directing diamination reactions.

About 1-(4-Nitrophenyl)ethanone, If you have any questions, you can contact Zhang, YJ; Su, JY; Niu, WJ; Li, YJ or concate me.. SDS of cas: 100-19-6

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

Safety of 1-(4-Nitrophenyl)ethanone. Cheong, WC; Yang, WJ; Zhang, J; Li, Y; Zhao, D; Liu, SJ; Wu, KL; Liu, QG; Zhang, C; Wang, DS; Peng, Q; Chen, C; Li, YD in [Cheong, Weng-Chon; Yang, Wenjuan; Zhang, Jian; Li, Yang; Zhao, Di; Liu, Shoujie; Wu, Konglin; Liu, Qinggang; Zhang, Chao; Wang, Dingsheng; Peng, Qing; Chen, Chen; Li, Yadong] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China; [Liu, Shoujie; Wu, Konglin] Anhui Normal Univ, Coll Chem & Mat Sci, Wuhu 241000, Peoples R China published Isolated Iron Single-Atomic Site-Catalyzed Chemoselective Transfer Hydrogenation of Nitroarenes to Arylamines in 2019.0, Cited 40.0. The Name is 1-(4-Nitrophenyl)ethanone. Through research, I have a further understanding and discovery of 100-19-6.

Selective hydrogenation of nitroarenes to arylamines is a great challenge because of the complicated mechanism and competitive hydrogenation of reducible functional groups. Isolated single-atomic site catalysts, benefitting from their uniform and well-defined catalytic sites, are promising to achieve high activity and selectivity. Herein, we prepared an isolated iron single-atomic catalyst supported on ordered mesoporous nitrogen-doped carbon (Fe-1/N-C). The as-prepared Fe-1/N-C showed excellent activity and tolerance for functional groups in the transfer hydrogenation of nitroarenes over hydrazine hydrate. Density functional theory calculations revealed that the single atomically dispersed, partially positively charged Fe atoms and the lowered energy barrier collectively contribute to the superior hydrogenation performances for nitroarenes.

About 1-(4-Nitrophenyl)ethanone, If you have any questions, you can contact Cheong, WC; Yang, WJ; Zhang, J; Li, Y; Zhao, D; Liu, SJ; Wu, KL; Liu, QG; Zhang, C; Wang, DS; Peng, Q; Chen, C; Li, YD or concate me.. Recommanded Product: 100-19-6

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

Authors Xu, SD; Tang, JH; Zhou, QW; Du, J; Li, HX in AMER CHEMICAL SOC published article about CATALYZED ASYMMETRIC HYDROGENATION; SELECTIVE HYDROGENATION; CHEMOSELECTIVE HYDROGENATION; HIGHLY EFFICIENT; PRODUCT SELECTIVITY; ZEOLITE CRYSTALS; NANOPARTICLES; REDUCTION; PD; PALLADIUM in [Xu, Shaodan; Tang, Junhong; Zhou, Qingwei; Du, Jia; Li, Huanxuan] Hangzhou Dianzi Univ, Coll Mat & Environm Engn, 1158,Second Ave, Hangzhou 310018, Zhejiang, Peoples R China in 2019.0, Cited 52.0. Formula: C8H7NO3. The Name is 1-(4-Nitrophenyl)ethanone. Through research, I have a further understanding and discovery of 100-19-6

We demonstrate a method to boost the photocatalysis of titania by constructing a core-shell structure. The crucial technique is to capsulate the titania nanoparticles by a sheath of nitrogen-doped carbon (TiO2@N-AC) with a thickness at 3.5-7.5 nm, which creates an exceptional effect to accelerate the catalytic hydrogenation of substituted nitroarenes with isopropanol as the hydrogen source under ultraviolet or visible-light irradiation. In the catalytic hydrogenation of various nitroarenes with substituted groups of -Cl, -F, -C-C, -C-O, and -C=N, TiO2@N-AC exhibits high conversions and selectivities to the corresponding functionalized anilines, even outperforming the catalysts containing noble metals. Mechanism study demonstrates that the TiO2@N-AC catalyst benefits the selective adsorption of the nitro group rather than other substituted groups, which efficiently avoids the undesirable side reactions. Importantly, the catalyst is stable and exhibits constant performances in the continuous recycling tests.

About 1-(4-Nitrophenyl)ethanone, If you have any questions, you can contact Xu, SD; Tang, JH; Zhou, QW; Du, J; Li, HX or concate me.. COA of Formula: C8H7NO3

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

Recently I am researching about POLYSUBSTITUTED PYRIDINES; CONSTRUCTION; CYCLIZATION; CASCADE; OXIMES; INDOLE; REDOX; REARRANGEMENT; OXYGENATION; ROUTE, Saw an article supported by the National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21602187, 21871226]; Science and Technology Planning Project of Hunan Province [2019RS2039]; Hunan Provincial Natural Science Foundation of ChinaNatural Science Foundation of Hunan Province [2020JJ3032]; Collaborative Innovation Center of New Chemical Technologies for Environmental Benignity and Efficient Resource Utilization. Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Meng, HX; Xu, ZH; Qu, ZH; Huang, HW; Deng, GJ. The CAS is 100-19-6. Through research, I have a further understanding and discovery of 1-(4-Nitrophenyl)ethanone. Recommanded Product: 1-(4-Nitrophenyl)ethanone

A copper(0)/PPh3-mediated cascade bisheteroannulation reaction of o-nitroalkynes with methylketoximes has been developed that provides viable access to a diverse range of pyrazo-fused pseudoindoxyl compounds. Synthetically useful functional groups including sensitive C-I bonds are compatible with this system. Mechanistic studies suggest a reaction cascade involving sequential PPh3-mediated deoxygenative cycloisomerization and copper-catalyzed [3 + 2] pyrazo-annulation.

Recommanded Product: 1-(4-Nitrophenyl)ethanone. About 1-(4-Nitrophenyl)ethanone, If you have any questions, you can contact Meng, HX; Xu, ZH; Qu, ZH; Huang, HW; Deng, GJ or concate me.

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

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