Tag: M.W=150-200

An article Mn(III) active site in hydrotalcite efficiently catalyzes the oxidation of alkylarenes with molecular oxygen WOS:000604626700006 published article about LAYERED DOUBLE HYDROXIDES; LIQUID-PHASE OXIDATION; SELECTIVE OXIDATION; AEROBIC OXIDATION; AROMATIC KETONES; MEDIATED OXIDATION; MN; NI; ACETOPHENONE; ETHYLBENZENE in [Wang, Anwei; Zhou, WeiYou; Sun, Zhonghua; Zhang, Zhong; Zhang, Zhihui; He, MingYang; Chen, Qun] Changzhou Univ, Jiangsu Key Lab Adv Catalyt Mat & Technol, Changzhou 213164, Peoples R China in 2021, Cited 73. Name: Phenyl(pyridin-2-yl)methanone. The Name is Phenyl(pyridin-2-yl)methanone. Through research, I have a further understanding and discovery of 91-02-1

Developing efficient heterogeneous catalytic systems based on easily available materials and molecular oxygen for the selective oxidation of alkylarenes is highly desirable. In the present research, NiMn hydrotalcite (Ni2Mn-LDH) has been found as an efficient catalyst in the oxidation of alkylarenes using molecular oxygen as the sole oxidant without any additive. Impressive catalytic performance, excellent stability and recyclability, broad applicable scope and practical potential for the catalytic system have been observed. Mn3+ species was proposed to be the efficient active site, and Ni2+ played an important role in stabilizing the Mn3+ species in the hydrotalcite structure. The kinetic study showed that the aerobic oxidation of diphenylmethane is a first-order reaction over Ni2Mn-LDH with the activation energy (E-a) and pre-exponential factor (A(0)) being 85.7 kJ mol(-1) and 1.8 x 109 min(-1), respectively. The Gibbs free energy (Delta G(not equal)) was determined to be -10.4 kJ mol(-1) K-1 for the oxidation based on Eyring-Polanyi equation, indicating the reaction is exergonic. The mechanism study indicated that the reaction proceeded through both radical and carbocation intermediates. The two species were then trapped by molecular oxygen and H2O or hydroxyl species, respectively, to yield the corresponding products. The present research might provide information for constructing highly efficient and stable active site for the catalytic aerobic oxidation based on available and economic material.

Welcome to talk about 91-02-1, If you have any questions, you can contact Wang, AW; Zhou, WY; Sun, ZH; Zhang, Z; Zhang, ZH; He, MY; Chen, Q or send Email.. Name: Phenyl(pyridin-2-yl)methanone

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Authors Li, FZ; Geng, JS; Hu, KQ; Yu, JP; Liu, N; Chai, ZF; Mei, L; Shi, WQ in AMER CHEMICAL SOC published article about METAL-ORGANIC FRAMEWORK; POLYROTAXANES; INCLUSION; DESIGN in [Li, Fei-Ze; Liu, Ning] Sichuan Univ, Inst Nucl Sci & Technol, Minist Educ, Key Lab Radiat Phys & Technol, Chengdu 610064, Peoples R China; [Li, Fei-Ze; Geng, Jun-Shan; Hu, Kong-Qiu; Yu, Ji-Pan; Chai, Zhi-Fang; Mei, Lei; Shi, Wei-Qun] Chinese Acad Sci, Inst High Energy Phys, Lab Nucl Energy Chem, Beijing 100049, Peoples R China; [Chai, Zhi-Fang] Chinese Acad Sci, Ningbo Inst Ind Technol, Engn Lab Adv Energy Mat, Ningbo 315201, Zhejiang, Peoples R China in 2021, Cited 43. Formula: C8H9NO2. The Name is Ethyl nicotinate. Through research, I have a further understanding and discovery of 614-18-6

behavior of cucurbituril-bipyridinium pseudorotaxane ligand by utilizing meta-functionalized bipyridinium dicarboxylate guest. A tailored pseudorotaxane precursor involving 1,1′-(hexane-1,6-diyl)bis(3-cyanopyridin-1-ium) bromide (C6BPCN3) and cucurbit[6]uril (CB[6]) has designed and synthesized. Through in situ hydrolysis of the pseudorotaxane ligands and their coordination assembly with uranyl cations, seven new uranyl-rotaxane coordination polymers URCP1-URCP7 have been obtained under hydrothermal conditions in the presence of different anions. It is demonstrated that the variation of carboxylate groups from para- to meta-position greatly affected the coordination behaviors of the metafunctionalized pseudorotaxane linkers, which are enriched from simple guest-only binding to host-guest simultaneous coordination and synergistic chelating. This effective regulation on uranyl coordination of supramolecular pseudorotaxane can be attributed to the proximity effect, which refers to the meta-position carboxyl group being spatially closer to the portal carbonyl group of CB[6]. Moreover, by combining other regulation methods such as introducing competing counterions and modulating solution acidity, the nuclearity of the uranyl center and the coordination patterns of the pseudorotaxane ligand can be diversely tuned, which subsequently exert great influence on the final dimensionality of resultant uranyl compounds. This work presents a large diversity of uranyl-based coordination polyrotaxane compounds with fascinating mechanically interlocked components and, most importantly, provides a feasible approach to adjust and control the metal coordination behavior of the pseudorotaxane ligand that might expand the scope of application of such supramolecular ligands.

Formula: C8H9NO2. Welcome to talk about 614-18-6, If you have any questions, you can contact Li, FZ; Geng, JS; Hu, KQ; Yu, JP; Liu, N; Chai, ZF; Mei, L; Shi, WQ or send Email.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

In 2020.0 ADV SYNTH CATAL published article about ASYMMETRIC TRANSFER HYDROGENATION; LIGAND BIFUNCTIONAL CATALYSIS; RUTHENIUM COMPLEX; AROMATIC KETONES; BASIS-SETS; METAL; REDUCTION; ALDEHYDES; DESIGN; ESTERS in [Murayama, Hiroaki; Heike, Yoshito; Higashida, Kosuke; Shimizu, Yohei; Sawamura, Masaya] Hokkaido Univ, Fac Sci, Dept Chem, Sapporo, Hokkaido 0600810, Japan; [Higashida, Kosuke; Shimizu, Yohei; Sawamura, Masaya] Hokkaido Univ, Inst Chem React Design & Discovery WPI ICReDD, Sapporo, Hokkaido 0010021, Japan; [Yodsin, Nuttapon; Wongnongwa, Yutthana; Jungsuttiwong, Siriporn] Ubon Ratchathani Univ, Fac Sci, Dept Chem, Ctr Organ Elect & Alternat Energy, Ubon Ratchathani 34190, Thailand; [Yodsin, Nuttapon; Wongnongwa, Yutthana; Jungsuttiwong, Siriporn] Ubon Ratchathani Univ, Fac Sci, Ctr Excellence Innovat Chem, Ubon Ratchathani 34190, Thailand; [Mori, Seiji] Ibaraki Univ, Inst Quantum Beam Sci, Mito, Ibaraki 3108512, Japan in 2020.0, Cited 53.0. The Name is Phenyl(pyridin-2-yl)methanone. Through research, I have a further understanding and discovery of 91-02-1. HPLC of Formula: C12H9NO

Iridium-catalyzed enantioselective transfer hydrogenation of ketones with formic acid was developed using a prolinol-phosphine chiral ligand. Cooperative action of the iridium atom and the ligand through alcohol-alkoxide interconversion is crucial to facilitate the transfer hydrogenation. Various ketones including alkyl aryl ketones, ketoesters, and an aryl heteroaryl ketone were competent substrates. An attractive feature of this catalysis is efficient discrimination between the alkyl and aryl substituents of the ketones, promoting hydrogenation with the identical sense of enantioselection regardless of steric demand of the alkyl substituent and thus resulting in a rare case of highly enantioselective transfer hydrogenation of tert-alkyl aryl ketones. Quantum chemical calculations revealed that the sp(3)-C-H/pi interaction between an sp(3)-C-H bond of the prolinol-phosphine ligand and the aryl substituent of the ketone is crucial for the enantioselection in combination with O-H center dot center dot center dot O/sp(3)-C-H center dot center dot center dot O two-point hydrogen-bonding between the chiral ligand and carbonyl group.

Welcome to talk about 91-02-1, If you have any questions, you can contact Murayama, H; Heike, Y; Higashida, K; Shimizu, Y; Yodsin, N; Wongnongwa, Y; Jungsuttiwong, S; Mori, S; Sawamura, M or send Email.. HPLC of Formula: C12H9NO

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Recently I am researching about GEM-DISUBSTITUTED ALKENES; C=C BOND-CLEAVAGE; C DOUBLE-BOND; SELECTIVE OXIDATION; EFFICIENT; HYDROGENATION; OZONOLYSIS; QUINOLINES; CATALYSTS; COMPLEX, Saw an article supported by the 111 ProjectMinistry of Education, China – 111 Project [D20015]; Natural Science Foundation of Hubei Province of ChinaNatural Science Foundation of Hubei Province [2018CFB241]. Published in ROYAL SOC CHEMISTRY in CAMBRIDGE ,Authors: Yu, T; Guo, MQ; Wen, SMM; Zhao, RR; Wang, JL; Sun, YL; Liu, QX; Zhou, HF. The CAS is 91-02-1. Through research, I have a further understanding and discovery of Phenyl(pyridin-2-yl)methanone. Recommanded Product: Phenyl(pyridin-2-yl)methanone

A simple, and practical oxidative scission of aromatic olefins to carbonyl compounds using O-2 as the sole oxidant with poly(ethylene glycol) dimethyl ether as a benign solvent has been developed. A wide range of monosubstituted, gem-disubstituted, 1,2-disubstituted, trisubstituted and tetrasubstituted aromatic olefins was successfully converted into the corresponding aldehydes and ketones in excellent yields even with gram-scale reaction. Some control experiments were also conducted to support a possible reaction pathway.

Recommanded Product: Phenyl(pyridin-2-yl)methanone. Welcome to talk about 91-02-1, If you have any questions, you can contact Yu, T; Guo, MQ; Wen, SMM; Zhao, RR; Wang, JL; Sun, YL; Liu, QX; Zhou, HF or send Email.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Formula: C12H9NO. Zhong, J; Long, Y; Yan, XF; He, SY; Ye, RY; Xiang, HF; Zhou, XG in [Zhong, Jing; Long, Yang; Yan, Xufei; He, Shiyu; Ye, Runyou; Xiang, Haifeng; Zhou, Xiangge] Sichuan Univ, Coll Chem, 29 Wangjiang Rd, Chengdu 610064, Peoples R China published Rhodium-Catalyzed Pyridine N-Oxide Assisted Suzuki-Miyaura Coupling Reaction via C(O)-C Bond Activation in 2019, Cited 75. The Name is Phenyl(pyridin-2-yl)methanone. Through research, I have a further understanding and discovery of 91-02-1.

A rhodium-catalyzed Suzuki-Miyaura coupling reaction via C(O)-C bond activation to form 2-benzoylpyridine N-oxide derivatives is reported. Both the C(O)-C(sp(2)) and C(O)-C(sp(3)) bond could be activated during the reaction with yields up to 92%. The N-oxide moiety could be employed as a traceless directing group, leading to free pyridine ketones.

Formula: C12H9NO. Welcome to talk about 91-02-1, If you have any questions, you can contact Zhong, J; Long, Y; Yan, XF; He, SY; Ye, RY; Xiang, HF; Zhou, XG or send Email.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Recommanded Product: Ethyl nicotinate. Okada, T; Miyamoto, Y; Kurihara, H; Mochiduki, Y; Katsumi, S; Ito, F in [Okada, Tomohiko] Shinshu Univ, Res Initiat Supra Mat, Nagano 3808553, Japan; [Okada, Tomohiko; Miyamoto, Yoko; Kurihara, Haruka] Shinshu Univ, Dept Chem & Mat Engn, Nagano 3808553, Japan; [Mochiduki, Yoshifumi; Katsumi, Shiho; Ito, Fuyuki] Shinshu Univ, Inst Educ, Nagano 3808544, Japan published Electronic interactions between a quaternary pyridyl-beta-diketonate and anionic clay nanosheets facilitate intense photoluminescence in 2020, Cited 48. The Name is Ethyl nicotinate. Through research, I have a further understanding and discovery of 614-18-6.

Electrostatic interactions between a quaternary pyridyl-beta-diketonate and anionic charged nanosheets were observed to produce a highly emissive dispersion in a rich water solution. A greater fluorescence quantum yield of approximately 50% was obtained when a luminogenic beta-diketonate, 1-(4-methoxyphenyl)-3-(3-hydroxyethyl-pyridinium bromide)-1,3-propandione (prepared by the Claisen condensation reaction and subsequent quaternization), was molecularly dispersed and enclosed by a couple of atomically flat ultrathin (approximately 1.0 nm) silicate sheets of anionic layered clay. By accommodating beta-diketonate into a narrow interlamellar space (approximately 0.4 nm distance), the molecular motion was suppressed, as confirmed by a smaller non-radiative relaxation rate constant, which was obtained by time-resolved luminescence and quantum yield measurements. Because the dense packing of beta-diketonate quenched the excited state, the isolation of luminogens by the co-adsorption of photochemical inert cations (tetramethylammonium and benzylammonium) was prevented by concentration quenching. A lower quantum yield was obtained by expanding the interlayer distance above 1.0 nm by co-adsorbing a photo-inactive water-soluble polymer, poly(vinylpyrrolidone). Therefore, the fixation and spatial separation of beta-diketonate in the narrow interlayer space was determined to be essential for obtaining strong emission.

Welcome to talk about 614-18-6, If you have any questions, you can contact Okada, T; Miyamoto, Y; Kurihara, H; Mochiduki, Y; Katsumi, S; Ito, F or send Email.. Recommanded Product: Ethyl nicotinate

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

In 2021 RSC ADV published article about GEM-DISUBSTITUTED ALKENES; C=C BOND-CLEAVAGE; C DOUBLE-BOND; SELECTIVE OXIDATION; EFFICIENT; HYDROGENATION; OZONOLYSIS; QUINOLINES; CATALYSTS; COMPLEX in [Yu, Tao; Guo, Mingqing; Wen, Simiaomiao; Zhao, Rongrong; Wang, Jinlong; Sun, Yanli; Liu, Qixing; Zhou, Haifeng] China Three Gorges Univ, Res Ctr Green Pharmaceut Technol & Proc, Hubei Key Lab Nat Prod Res & Dev, Coll Biol & Pharmaceut Sci, Yichang 443002, Peoples R China in 2021, Cited 51. The Name is Phenyl(pyridin-2-yl)methanone. Through research, I have a further understanding and discovery of 91-02-1. Application In Synthesis of Phenyl(pyridin-2-yl)methanone

A simple, and practical oxidative scission of aromatic olefins to carbonyl compounds using O-2 as the sole oxidant with poly(ethylene glycol) dimethyl ether as a benign solvent has been developed. A wide range of monosubstituted, gem-disubstituted, 1,2-disubstituted, trisubstituted and tetrasubstituted aromatic olefins was successfully converted into the corresponding aldehydes and ketones in excellent yields even with gram-scale reaction. Some control experiments were also conducted to support a possible reaction pathway.

Application In Synthesis of Phenyl(pyridin-2-yl)methanone. Welcome to talk about 91-02-1, If you have any questions, you can contact Yu, T; Guo, MQ; Wen, SMM; Zhao, RR; Wang, JL; Sun, YL; Liu, QX; Zhou, HF or send Email.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Huang, R; Zhang, XD; Wu, X; Liu, JK in [Huang, Rong; Zhang, Xian-Dong; Wu, Xing; Liu, Ji-Kai] South Cent Univ Nationalities, Sch Pharmaceut Sci, Wuhan 430074, Peoples R China; [Huang, Rong; Liu, Ji-Kai] South Cent Univ Nationalities, Natl Demonstrat Ctr Expt Ethnopharmacol Educ, Wuhan 430074, Peoples R China published beta-Carboline-Based pH Fluorescent Probe and Its Application for Monitoring Enzymatic Ester Hydrolysis in 2021, Cited 26. Formula: C8H9NO2. The Name is Ethyl nicotinate. Through research, I have a further understanding and discovery of 614-18-6.

A novel pH-activatable fluorescent probe, 1-(propan-2-yl)-9H-pyrido[3,4-b]indole-3-carboxylic acid (L-1), based on beta-carboline derivatives, has been developed, which displays significant fluorescent response toward pH variation with high selectivity, good photo-stability and favorable pKa value. Moreover, L-1 can dynamically monitor the release of protons during ester hydrolysis reaction in consistent with enzymatic kinetics manner.

Welcome to talk about 614-18-6, If you have any questions, you can contact Huang, R; Zhang, XD; Wu, X; Liu, JK or send Email.. Formula: C8H9NO2

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Recently I am researching about THERMOANAEROBACTER-ETHANOLICUS; SATURATION MUTAGENESIS; MOLECULAR-DYNAMICS; DIRECTED EVOLUTION; SUBSTRATE-SPECIFICITY; ASYMMETRIC REDUCTION; BIOCATALYSIS; KETOREDUCTASE; MUTATION; ENZYME, Saw an article supported by the CAS Pioneer Hundred Talents Program [2016-053]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31700698, 21532008, 21676120, 21772142]; Key Research Program of the Chinese Academy of SciencesChinese Academy of Sciences [KFZD-SW-212]; Natural Science Foundation of TianjinNatural Science Foundation of Tianjin [18JCYBJC24600]; Open Project Funding of the State Key Laboratory of Bioreactor Engineering [2017OPEN02]; Key Projects in the Tianjin Science & Technology Pillar Program [15PTCYSY00020]; National Basic Research Program of China (973 Program)National Basic Research Program of China [2014CB745100]; Priority Academic Program Development of Jiangsu Higher Education Institutions; Top-notch Academic Programs Project of Jiangsu Higher Education Institutions; National First-Class Discipline Program of Light Industry Technology and Engineering [LITE2018-09]. Published in WILEY-V C H VERLAG GMBH in WEINHEIM ,Authors: Liu, BB; Qu, G; Li, JK; Fan, WC; Ma, JA; Xu, Y; Nie, Y; Sun, ZT. The CAS is 91-02-1. Through research, I have a further understanding and discovery of Phenyl(pyridin-2-yl)methanone. Category: pyridine-derivatives

Directed evolution of enzymes for the asymmetric reduction of prochiral ketones to produce enantio-pure secondary alcohols is particularly attractive in organic synthesis. Loops located at the active pocket of enzymes often participate in conformational changes required to fine-tune residues for substrate binding and catalysis. It is therefore of great interest to control the substrate specificity and stereochemistry of enzymatic reactions by manipulating the conformational dynamics. Herein, a secondary alcohol dehydrogenase was chosen to enantioselectively catalyze the transformation of difficult-to-reduce bulky ketones, which are not accepted by the wildtype enzyme. Guided by previous work and particularly by structural analysis and molecular dynamics (MD) simulations, two key residues alanine 85 (A85) and isoleucine 86 (I86) situated at the binding pocket were thought to increase the fluctuation of a loop region, thereby yielding a larger volume of the binding pocket to accommodate bulky substrates. Subsequently, site-directed saturation mutagenesis was performed at the two sites. The best mutant, where residue alanine 85 was mutated to glycine and isoleucine 86 to leucine (A85G/I86L), can efficiently reduce bulky ketones to the corresponding pharmaceutically interesting alcohols with high enantioselectivities (similar to 99% ee). Taken together, this study demonstrates that introducing appropriate mutations at key residues can induce a higher flexibility of the active site loop, resulting in the improvement of substrate specificity and enantioselectivity.

Category: pyridine-derivatives. Bye, fridends, I hope you can learn more about C12H9NO, If you have any questions, you can browse other blog as well. See you lster.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Authors Xu, PC; Qian, B; Qi, ZJ; Gao, B; Hu, B; Huang, HM in ROYAL SOC CHEMISTRY published article about in [Xu, Pengcheng; Qian, Bo; Qi, Zaojuan; Hu, Bin; Huang, Hanmin] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China; [Xu, Pengcheng] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Gao, Bao; Huang, Hanmin] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Chinese Acad Sci, Hefei 230026, Peoples R China; [Gao, Bao; Huang, Hanmin] Univ Sci & Technol China, Dept Chem, Chinese Acad Sci, Ctr Excellence Mol Synth, Hefei 230026, Peoples R China in 2021.0, Cited 55.0. Product Details of 91-02-1. The Name is Phenyl(pyridin-2-yl)methanone. Through research, I have a further understanding and discovery of 91-02-1

An approach for the synthesis of quinolizinone with potential bioactivity has been developed via palladium-catalytic dearomative cyclocarbonylation of allyl alcohol. Diverse quinolizinone compounds could be attained with good efficiencies. A feasible reaction pathway could be a successive procedure of allylation, dearomatization, CO insertion and the Heck reaction.

Product Details of 91-02-1. About Phenyl(pyridin-2-yl)methanone, If you have any questions, you can contact Xu, PC; Qian, B; Qi, ZJ; Gao, B; Hu, B; Huang, HM or concate me.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem