Category: benzodioxans

An article Lewis Acidity of Carbon in Activated Carbonyl Group vs. B(C6F5)(3) for Metal-Free Catalysis of Hydrogenation of Carbonyl Compounds WOS:000660329500001 published article about BASIC SOLVENT; PAIRS; MECHANISM; H-2; REACTIVITY; DIHYDROGEN; ALDEHYDES; DYNAMICS; CLEAVAGE in [Heshmat, Mojgan] Univ Amsterdam, Vant Hoff Inst Mol Sci, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands; [Heshmat, Mojgan] Rhein Westfal TH Aachen, CAT Catalyt Ctr, ITMC, Worringerweg 2, D-52074 Aachen, Germany in 2021.0, Cited 60.0. The Name is 1-(4-Nitrophenyl)ethanone. Through research, I have a further understanding and discovery of 100-19-6. SDS of cas: 100-19-6

In this work, using DFT calculations, we investigated Lewis acidities of carbon (in activated carbonyl group) in comparison to the B(C6F5)(3) in combination with dioxane as the Lewis base (LB) for metal-free catalysis of heterolytic H-2 splitting and hydrogenation of carbonyl compounds. We found that in case of carbon as the Lewis acid (LA) the reaction is controlled by frontier molecular orbital interactions between the H-2 and LA-LB fragments at shorter distances. The steric effects can be reduced by electrophilic substitutions on the carbonyl carbon. Synergic combination between stronger orbital interactions and reduced steric effects can lower the barrier of the H-2 splitting below 10 kcal/mol. With the B(C6F5)(3), the H-2 splitting is controlled by electrostatic interactions, which cause to form an early transition state. An advantage of employing Lewis acidity of the activated carbonyl carbon for hydrogenation is that the hydride-type attack and hydrogenation of the C=O bond occur in a single step throughout H-2 splitting. Hence, stronger Lewis acidity of the C(C=O) reinforces hydrogenation without prohibition of the hydride delivery.

SDS of cas: 100-19-6. Welcome to talk about 100-19-6, If you have any questions, you can contact Heshmat, M or send Email.

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

An article Highly Active Cooperative Lewis Acid-Ammonium Salt Catalyst for the Enantioselective Hydroboration of Ketones WOS:000607730400001 published article about CONFIGURED BETA-LACTONES; ASYMMETRIC REDUCTION; SELECTIVE HYDROBORATION; ALUMINUM-HYDRIDE; BASIS-SETS; HYDROGENATION; CHEMISTRY; KINETICS; COMPLEX; IMINES in [Titze, Marvin; Junge, Thorsten; Peters, Rene] Univ Stuttgart, Inst Organ Chem, Pfaffenwaldring 55, D-70569 Stuttgart, Germany; [Heitkaemper, Juliane; Kaestner, Johannes] Univ Stuttgart, Inst Theoret Chem, Pfaffenwaldring 55, D-70569 Stuttgart, Germany in 2021.0, Cited 70.0. The Name is 1-(4-Nitrophenyl)ethanone. Through research, I have a further understanding and discovery of 100-19-6. SDS of cas: 100-19-6

Enantiopure secondary alcohols are fundamental high-value synthetic building blocks. One of the most attractive ways to get access to this compound class is the catalytic hydroboration. We describe a new concept for this reaction type that allowed for exceptional catalytic turnover numbers (up to 15 400), which were increased by around 1.5-3 orders of magnitude compared to the most active catalysts previously reported. In our concept an aprotic ammonium halide moiety cooperates with an oxophilic Lewis acid within the same catalyst molecule. Control experiments reveal that both catalytic centers are essential for the observed activity. Kinetic, spectroscopic and computational studies show that the hydride transfer is rate limiting and proceeds via a concerted mechanism, in which hydride at Boron is continuously displaced by iodide, reminiscent to an S(N)2 reaction. The catalyst, which is accessible in high yields in few steps, was found to be stable during catalysis, readily recyclable and could be reused 10 times still efficiently working.

Welcome to talk about 100-19-6, If you have any questions, you can contact Titze, M; Heitkamper, J; Junge, T; Kastner, J; Peters, R or send Email.. SDS of cas: 100-19-6

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

An article In Situ Generated Gold Nanoparticles on Active Carbon as Reusable Highly Efficient Catalysts for a C-sp3-C-sp3 Stille Coupling WOS:000476452700050 published article about AEROBIC OXIDATION; ORGANOTIN COMPOUNDS; ALLYLIC HALIDES; AU CLUSTERS; REACTIVITY; ALCOHOLS; PHENYLACETYLENE; ALDEHYDES; CHLORIDES; SURFACE in [Holz, Julia; Pfeffer, Camilla; Peters, Rene] Univ Stuttgart, Inst Organ Chem, Pfaffenwaldring 55, D-70569 Stuttgart, Germany; [Zuo, Hualiang; Beierlein, Dennis; Klemm, Elias] Univ Stuttgart, Inst Tech Chem, Pfaffenwaldring 55, D-70569 Stuttgart, Germany; [Richter, Gunther] MPI IS Stuttgart, Heisenbergstr 3, D-70569 Stuttgart, Germany in 2019.0, Cited 73.0. The Name is 1-(4-Nitrophenyl)ethanone. Through research, I have a further understanding and discovery of 100-19-6. Application In Synthesis of 1-(4-Nitrophenyl)ethanone

Gold nanoparticle catalysts are important in many industrial production processes. Nevertheless, for traditional Csp2-Csp2 cross-coupling reactions they have been rarely used and Pd catalysts usually give a superior performance. Herein we report that in situ formed gold metal nanoparticles are highly active catalysts for the cross coupling of allylstannanes and activated alkylbromides to form Csp3-Csp3 bonds. Turnover numbers up to 29 000 could be achieved in the presence of active carbon as solid support, which allowed for convenient catalyst recovery and reuse. The present study is a rare case where a gold metal catalyst is superior to Pd catalysts in a cross-coupling reaction of an organic halide and an organometallic reagent.

Welcome to talk about 100-19-6, If you have any questions, you can contact Holz, J; Pfeffer, C; Zuo, H; Beierlein, D; Richter, G; Klemm, E; Peters, R or send Email.. Application In Synthesis of 1-(4-Nitrophenyl)ethanone

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

An article Osmium-Promoted Transformation of Alkyl Nitriles to Secondary Aliphatic Amines: Scope and Mechanism WOS:000541445700017 published article about H BOND ACTIVATION; SELECTIVE CATALYTIC-HYDROGENATION; HEXAHYDRIDE COMPLEX; LIGANDS PREPARATION; N-H; DEHYDROGENATION; HYDRIDE; VINYLIDENE; RUTHENIUM; REACTIVITY in [Babon, Juan C.; Esteruelas, Miguel A.; Lopez, Ana M.; Onate, Enrique] Univ Zaragoza CSIC, Dept Quim Inorgan, Inst Sintesis Quim & Catalisis Homogenea ISQCH, Ctr Innovac Quim Avanzada ORFEO CINQA, Zaragoza 50009, Spain in 2020, Cited 116. The Name is 2,2-Diphenylacetonitrile. Through research, I have a further understanding and discovery of 86-29-3. HPLC of Formula: C14H11N

The transformation of alkyl nitriles to symmetrical and asymmetrical secondary aliphatic amines promoted by the hexahydride complex OsH6 ((PPr3)-Pr-i)(2) (1) is described, and the mechanisms of the reactions involved are established. Complex 1 catalyzes the aforementioned transformations of aryl-, pyridyl-, and alkoxy-functionalized alkyl nitriles with linear or branched chains. The formation of the secondary amines involves primary imines, primary amines, and secondary imines as organic intermediates. The reactions take place under mild conditions (toluene, 100 degrees C, and 4 bar of H-2). Stoichiometric reactions of 1 with pivalonitrile and 2-methoxyacetonitrile have allowed us to isolate the trihydride azavinylidene derivatives OsH3{=N=CHR}((PPr3)-Pr-i)(2) (R = Bu-t (3), CH2OMe (4)). Their formation involves the insertion of the N-C triple bond of the substrates into an Os-H bond of the unsaturated tetrahydride OsH4 ((PPr3)-Pr-i)(2) (A), which is generated by reductive elimination of H-2 from the hexahydride precursor. The reaction of these trihydride azavinylidene species with H-2 is the key step for the reduction of the N-C triple bond of the nitriles. In the absence of H-2, the attack of A to the azavinylidene ligand produces the rupture of its C(sp(2))-C(sp(3)) bond. As a consequence of this attack and the presence of primary imines and amines in the reaction media, the binuclear complexes ((PPr3)-Pr-i)(2) H4Os(mu-CN)OsH3{kappa(1)-N-(NH= CHCH2OMe)}((PPr3)-Pr-i)(2) (5) and ((PPr3)-Pr-i)(2)H4Os(mu-CN)OsH3{kappa(1)-N-(NH2CH2CH2OMe)}((PPr3)-Pr-i)(2) (6) have been isolated and characterized by X-ray diffraction analysis, for 2-methoxyacetonitrile. DFT calculations reveal noticeable similarities between the hydrogenations of nitriles to primary imines and those of primary imines to primary amines.

Welcome to talk about 86-29-3, If you have any questions, you can contact Babon, JC; Esteruelas, MA; Lopez, AM; Onate, E or send Email.. HPLC of Formula: C14H11N

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

Authors Chen, C; Zhang, X; Cao, HG; Wang, F; Yu, L; Xu, Q in WILEY-V C H VERLAG GMBH published article about CARBONYL-COMPOUNDS; HYDROGEN-PEROXIDE; SELENIUM; EFFICIENT; OXIMES; ALKENES; FUNCTIONALIZATION; DEPROTECTION; ALDOXIMES; CLEAVAGE in [Chen, Chao; Zhang, Xu; Cao, Hongen; Wang, Fang; Yu, Lei; Xu, Qing] Yangzhou Univ, Sch Chem & Chem Engn, Guangling Coll, Yangzhou 225002, Jiangsu, Peoples R China; [Chen, Chao; Zhang, Xu; Cao, Hongen; Wang, Fang; Yu, Lei; Xu, Qing] Yangzhou Univ, Sch Hort & Plant Protect, Inst Pesticide, Yangzhou 225002, Jiangsu, Peoples R China; [Wang, Fang] Yangzhou Polytechnol Inst, Yangzhou 225127, Jiangsu, Peoples R China; [Xu, Qing] Wenzhou Univ, Coll Chem & Mat Engn, Wenzhou 325035, Zhejiang, Peoples R China in 2019.0, Cited 68.0. Category: benzodioxans. The Name is 1-(4-Nitrophenyl)ethanone. Through research, I have a further understanding and discovery of 100-19-6

In contrast to conventional organoselenium-catalyzed oxidation reactions that require peroxide oxidants such as hydrogen peroxide, in this work we found that, addition of a low loading of iron (II) could enable the successful utilization of air as the terminal oxidant in organoselenium-catalyzed oxidative deoximation reaction of ketoximes. This led to a new mild and relatively green aerobic oxidative deoximation method. Control reactions and X-ray photoelectron spectroscopy (XPS) analysis suggest that iron is crucial in the catalytic cycle, working to prohibit the deactivation of selenium catalyst through an iron-catalyzed aerobic oxidation of low valent selenium species by air to the active high valent selenium species. Since air can be utilized as the terminal oxidant, this work may contribute to the advance of organoselenium catalysis.

Category: benzodioxans. Welcome to talk about 100-19-6, If you have any questions, you can contact Chen, C; Zhang, X; Cao, HG; Wang, F; Yu, L; Xu, Q or send Email.

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

An article Synthesis of 8-oxa-2-azaspiro[4.5]decane WOS:000585154600027 published article about 3+2 CYCLOADDITION REACTION; AZOMETHINE YLIDES in [Ogurtsov, V. A.; Rakitin, O. A.] Russian Acad Sci, ND Zelinsky Inst Organ Chem, 47 Leninsky Prosp, Moscow 119991, Russia in 2020, Cited 20. The Name is 2,2-Diphenylacetonitrile. Through research, I have a further understanding and discovery of 86-29-3. SDS of cas: 86-29-3

A convenient synthesis of new 8-oxa-2-azaspiro[4.5]decane from commercially available reagents based on tetrahydropyran-4-carbonitrile and 1-bromo-2-fluoroethane has been developed. This compound is promising for the production of important biologically active compounds.

Welcome to talk about 86-29-3, If you have any questions, you can contact Ogurtsov, VA; Rakitin, OA or send Email.. SDS of cas: 86-29-3

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

In 2020.0 EUR J INORG CHEM published article about INTRAMOLECULAR HYDROAMINATION; CRYSTAL-STRUCTURE; ALKALINE-EARTHS; COMPLEXES; IODIDE; METAL; HYDROPHOSPHINATION; REACTIVITY; POTASSIUM; CHEMISTRY in [Brand, Steffen; Causero, Andrea; Elsen, Holger; Pahl, Juergen; Langer, Jens; Harder, Sjoerd] Univ Erlangen Nurnberg, Inorgan & Organometall Chem, Egerlandstr 1, D-91058 Erlangen, Germany in 2020.0, Cited 71.0. The Name is 1-(4-Nitrophenyl)ethanone. Through research, I have a further understanding and discovery of 100-19-6. Application In Synthesis of 1-(4-Nitrophenyl)ethanone

The first naked (Lewis base-free) cationic Ca amidinate complex [(AmCa)-Am-tBu-Ca-DIPP(C6H6)](+)[B(C6F5)(4)](-) was prepared in 62 % yield {(AmDIPP)-Am-tBu = tBuC(N-DIPP)(2); DIPP = 2,6-diisopropylphenyl} by reaction of [(AmCaH)-Am-tBu-Ca-DIPP](2) with [Ph3C](+)[B(C6F5)(4)](-) in chlorobenzene. The ether-free complex (AmCaN)-Am-tBu-Ca-DIPP(SiMe3)(2) was obtained by removal of diethyl ether from its ether adduct. Crystal structures show that the amidinate ligand in both complexes is N,Aryl-chelating. In this coordination mode the bulk of the amidinate ligand is comparable to that of a DIPP-substituted beta-diketiminate ligand. Isomers with N,N-coordinating amidinate ligands are circa 15 kcal/mol higher in energy and this coordination mode is only present in case additional ether ligands compensate for energy loss or in case of space limitation at the metal, e.g. in homoleptic (Am-tBu(DIPP))(2)Ca. A series of four Ca amidinate complexes, (AmCaX)-Am-tBu-Ca-DIPP, were tested in the catalytic hydroboration of ketones and aldehydes by pinacolborane (HBpin). Catalytic activities increase for X- = I- < B(C6F5)(4)(-) < (Me3Si)(2)N- approximate to H-. For catalysts with unreactive anions, like I- or B(C6F5)(4)(-), catalyst performance increases with the Lewis acidity of the metal and a mechanism is proposed in which HBpin and ketone coordinate to the Ca2+ ion which is followed by direct hydroboration. The more active catalysts with X- = (Me3Si)(2)N- or H- likely operate through a mechanism which involves intermediate metal hydride (or borate) complexes. Application In Synthesis of 1-(4-Nitrophenyl)ethanone. Welcome to talk about 100-19-6, If you have any questions, you can contact Brand, S; Causero, A; Elsen, H; Pahl, J; Langer, J; Harder, S or send Email.

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

Name: 1-(4-Nitrophenyl)ethanone. Recently I am researching about METAL-ORGANIC-FRAMEWORKS; CHEMOSELECTIVE HYDROGENATION; CO2 HYDROGENATION; POROUS CARBON; PERFORMANCE; DEHYDROGENATION; NITROBENZENE; HETEROARENES; NITROARENES; REDUCTION, Saw an article supported by the NSFCNational Natural Science Foundation of China (NSFC) [21701002, 21401004, 21571092]; Natural Science Foundation of Anhui ProvinceNatural Science Foundation of Anhui Province [1508085QB36]; Open Foundation of Anhui Laboratory of Molecule-based Materials [fzj19005]; National Creative Plan of Students [201810370443]. Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Yun, RR; Zhang, S; Ma, WJ; Lv, X; Liu, SJ; Sheng, T; Wang, SN. The CAS is 100-19-6. Through research, I have a further understanding and discovery of 1-(4-Nitrophenyl)ethanone

Herein, a series of Fe-based catalysts have been designed and prepared by grinding a mixture of MIL-88d and melamine, and then the mixture was followed by pyrolysis. An unusual Fe/Fe3C-activated site is uniformly encapsulated in the N-doped carbon tubes obtained by pyrolysis of the film-like nanocrystals of MIL-88d. Experimental characterizations and theoretical calculations demonstrate that the surface N sites can effectively trap the nitrobenzene and aniline by their phenyl groups with the formation of three C-N bonds that made the catalyst exhibit excellent catalytic activity (turnover frequencies of <= 11268 h(-1) calculated on the basis of nitrobenzene) and chemoselectivity for the reduction of nitro derivatives under facile conditions. Name: 1-(4-Nitrophenyl)ethanone. Bye, fridends, I hope you can learn more about C8H7NO3, If you have any questions, you can browse other blog as well. See you lster.

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

I found the field of Chemistry very interesting. Saw the article Efficient Transfer Hydrogenation of Ketones Catalyzed by a Phosphine-Free Cobalt-NHC Complex published in 2020.0. Product Details of 100-19-6, Reprint Addresses Yang, Y (corresponding author), Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, Qingdao 266101, Peoples R China.; Fang, XL (corresponding author), Anhui Jianzhu Univ, Key Lab Funct Mol Design & Interface Proc, Coll Mat & Chem Engn, Hefei 230601, Peoples R China.; Yang, Y (corresponding author), Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China.. The CAS is 100-19-6. Through research, I have a further understanding and discovery of 1-(4-Nitrophenyl)ethanone

A simple phosphine-free cobalt-NHC pincer complex has been synthesized and utilized for the transfer hydrogenation of ketones with 2-propanol as hydrogen donor. A broad range of ketones varying from aromatic, aliphatic and heterocyclic were effectively reduced to their corresponding alcohols in moderate to excellent yields with good tolerance of functional groups.

Welcome to talk about 100-19-6, If you have any questions, you can contact Ibrahim, JJ; Reddy, CB; Fang, XL; Yang, Y or send Email.. Product Details of 100-19-6

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

Application In Synthesis of 1-(4-Nitrophenyl)ethanone. I found the field of Chemistry very interesting. Saw the article Catalytic application of sulfamic acid-functionalized magnetic Fe3O4 nanoparticles (SA-MNPs) for protection of aromatic carbonyl compounds and alcohols: experimental and theoretical studies published in 2020.0, Reprint Addresses Zolfigol, MA (corresponding author), Bu Ali Sina Univ, Dept Organ Chem, Fac Chem, Hamadan, Hamadan, Iran.; Taherpour, AA (corresponding author), Razi Univ, Dept Organ Chem, Fac Chem, Kermanshah, Iran.. The CAS is 100-19-6. Through research, I have a further understanding and discovery of 1-(4-Nitrophenyl)ethanone.

Protection techniques of functional groups within the structure of organic compounds are important synthetic methods against unwanted attacks from various reagents during synthetic sequences. Acetal and thioacetal groups are well known as protective functional groups in organic reactions. In this study, acetalization of carbonyl compounds with diols and dithiols and methoxymethylation of alcohols with formaldehyde dimethyl acetal (FDMA) have been carried out using sulfamic acid-functionalized magnetic Fe3O4 nanoparticles (SA-MNPs) as a heterogeneous solid acid catalyst. Products were characterized by FT-IR and NMR spectroscopies. The structural and electronic properties of some products were computed by quantum mechanical (QM) methods. Depending on the stereochemistry and electronic properties that were obtained by computational results, we have suggested that hyperconjugation plays a key role in the structural properties of 2-phenyl-1,3-dioxolane derivatives, and also the electron transfer between pi-electrons of the aromatic ring with the 3d orbital of S-atoms influences the 2-phenyl-1,3-dithiane derivatives’ structure.

Welcome to talk about 100-19-6, If you have any questions, you can contact Khaef, S; Zolfigol, MA; Taherpour, AA; Yarie, M or send Email.. Application In Synthesis of 1-(4-Nitrophenyl)ethanone

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