Tag: M.W=100-150

In 2019 ORGANOMETALLICS published article about CATALYZED COUPLING REACTIONS; ARYL HALIDES; OXIDATIVE ADDITION; C-C; PALLADIUM; CONVERSION; COMPLEXES; AMINATION; MECHANISM; SECONDARY in [Bryant, Dillon J.; Zakharov, Lev N.; Tyler, David R.] Univ Oregon, Dept Chem & Biochem, 1253 Univ Oregon, Eugene, OR 97403 USA in 2019, Cited 44. The Name is 1,3-Dimethoxybenzene. Through research, I have a further understanding and discovery of 151-10-0. Quality Control of 1,3-Dimethoxybenzene

The rational design and synthesis of a novel dialkylbiarylphosphine ligand, 2′-(dimethylphosphine)-2,6-dimethoxy-1,1′-biphenyl (MeSPhos), for palladium-catalyzed C-N cross-coupling reactions is described. Based on previous results, it was hypothesized that a ligand with electronic properties similar to (2-biphenyl)dimethylphosphine (MeJPhos) but with greater steric bulk would allow the cross-coupling of previously inaccessible deactivated aryl chlorides. As predicted, MeSPhos exhibited similar electronic properties to MeJPhos. However, MeSPhos surprisingly showed a significantly smaller steric profile than MeJPhos. In comparison to the widely used CySPhos (2-dicyclohexylphosphino-2′,6′-dimethoxybiphenyl), MeSPhos promoted the oxidative addition of highly deactived aryl chlorides for which CySPhos was ineffective, but significantly decreased the rate of reductive elimination. The kinetics of cross-coupling reactions showed that the altered steric and electronic parameters of MeSPhos had a significant impact on the rate of cross-coupling, and the decreased steric bulk had a profound deleterious impact on the catalyst stability. With regard to this latter point, only the most activated aryl chlorides reacted at a sufficient rate to overcome the rate of catalyst decomposition. These results indicate that the relationship between the electron-donating ability of the phosphine ligand and the rate of oxidative addition is complex, and they also illustrate that increasing substitution on the biphenyl structure does not necessarily increase the steric bulk of the ligand.

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In 2020 ADV SYNTH CATAL published article about FRIEDEL-CRAFTS ALKYLATION; ELECTRON-RICH ARENES; ONE-POT SYNTHESIS; C-H BOND; METAL-FREE; ALPHA-ARYLATION; 3,3-DISUBSTITUTED OXINDOLES; ASYMMETRIC-SYNTHESIS; ORGANOCATALYZED SULFENYLATION; GRAPHITE OXIDE in [Wu, Hongru; Qiu, Chuntian; Zhang, Zhaofei; Zhang, Bing; Zhang, Shaolong; Xu, Yangsen; Su, Chenliang] Shenzhen Univ, Int Collaborat Lab 2D Mat Optoelect Sci & Technol, Engn Technol Res Ctr 2D Mat Informat Funct Device, Inst Microscale Optoeletron,Minist Educ, Shenzhen 518060, Guangdong, Peoples R China; [Zhang, Shaolong; Loh, Kian Ping] Natl Univ Singapore, Dept Chem, 3 Sci Dr 3, Singapore 117543, Singapore; [Zhou, Hongwei] Jiaxing Univ, Coll Biol Chem Sci & Engn, 118 Jiahang Rd, Jiaxing 314001, Peoples R China in 2020, Cited 85. The Name is 1,3-Dimethoxybenzene. Through research, I have a further understanding and discovery of 151-10-0. Recommanded Product: 151-10-0

Here, we explore the GO-catalyzed cross-dehydrogenative coupling of oxindoles with arenes and thiophenols for the rapid synthesis of 3-aryloxindoles and 3-sulfenylated oxindoles. Control experiments and small-molecule mimicking studies reveal that the acidic nature and quinone-type functionalities of GO are synergistically utilized for the coupling reaction. The reaction proceeds under simple and mild reaction conditions, exhibits good functional group tolerance, and can be easily scaled up to the gram level.

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Name: 1,3-Dimethoxybenzene. Wang, YL; Liu, Y; He, JH; Zhang, YT in [Wang, Yinling; Liu, Yue; He, Jianghua; Zhang, Yuetao] Jilin Univ, Coll Chem, State Key Lab Supramol Struct & Mat, Changchun 130012, Jilin, Peoples R China published Redox-neutral photocatalytic strategy for selective C-C bond cleavage of lignin and lignin models via PCET process in 2019, Cited 62. The Name is 1,3-Dimethoxybenzene. Through research, I have a further understanding and discovery of 151-10-0.

It remains challenging to achieve the selective cleavage of C-C bonds in lignin or lignin model compounds to produce aromatic products in high yield and selectivity. We have developed a redox-neutral photocatalytic strategy to accomplish this goal in both beta-O-4 and beta-1 lignin models at room temperature (RT) via proton-coupled electron transfer (PCET) process without any pretreatments of substrate, by adjusting the alkalinity of base to obtain a lignin models/base PCET pair with a bond dissociation free energy close to 102 kcal/mol. Without breaking down C-beta-C-gamma bond and any C-O bonds, this PCET method is 100% atom economy and produces exclusive C-alpha-C-beta bond cleavage products, such as benzaldehydes (up to 97%) and phenyl ethers (up to 96%), in high to excellent yields and selectivities. Preliminary studies indicated that the PCET strategy is also effective for the depolymerization of native lignin at RT, thus providing significantly important foundation to the depolymerization of lignin. (C) 2019 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved.

Name: 1,3-Dimethoxybenzene. Welcome to talk about 151-10-0, If you have any questions, you can contact Wang, YL; Liu, Y; He, JH; Zhang, YT or send Email.

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In 2020 INORG CHEM published article about EQUILIBRIUM-CONSTANTS; AROMATIC-ACIDS; URANIUM(VI); CRYSTAL; ION; BENZOATE; MODEL; EXAFS in [Choi, Seonggyu; Yun, Jong-Il] Korea Adv Inst Sci & Technol, Dept Nucl & Quantum Engn, Daejeon 34141, South Korea in 2020, Cited 36. The Name is 3-Methylbenzoic acid. Through research, I have a further understanding and discovery of 99-04-7. COA of Formula: C8H8O2

Aqueous complexation of uranyl(VI) ions with methoxy- and methylbenzoates in 0.1 M NaClO4 solutions was studied by means of UV-vis absorption and Raman spectroscopy. The predominance of 1:1 complexation (uranyl to ligand) was verified for all uranyl carboxylates under acidic conditions (-log [H+] < 3.2), and absorption spectra, stability constants, and symmetric stretching frequencies of the uranyl group of the complexes were determined for the first time. For meta- and parasubstituted benzoates, a linear free energy relationship (LFER) was observed between the equilibrium constants for the protonation (log beta(p)) and uranyl complexation (log beta(U)) reactions, and the electronic effects of the substituents were successfully described by the Hammett equation. In the case of ortho-substituted benzoates, the stability constant of uranyl 2-methoxybenzoate is slightly lower than the LFER trend, which is generally explained by the destabilization of cross-conjugation in the uranyl complex due to the steric hindrance between the reaction center and adjacent methoxy group. On the contrary, the stability constant of uranyl 2-methylbenzoate is comparable to the LFER trend, implying that the steric effect is relatively insignificant for the smaller methyl group. The utility of such thermodynamic correlations between the uranyl-substituted benzoates is useful for the molecular understanding and predictive modeling of chemical interactions between actinyl(VI) ions and various organic carboxyl groups. Welcome to talk about 99-04-7, If you have any questions, you can contact Choi, S; Yun, JI or send Email.. COA of Formula: C8H8O2

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Recently I am researching about QUANTUM DOTS; PHOTOREDOX CATALYSIS; GRAPHENE OXIDE; NANODOTS, Saw an article supported by the IIT Indore; MHRD, New Delhi. Published in ROYAL SOC CHEMISTRY in CAMBRIDGE ,Authors: Sarma, D; Majumdar, B; Sarma, TK. The CAS is 151-10-0. Through research, I have a further understanding and discovery of 1,3-Dimethoxybenzene. Safety of 1,3-Dimethoxybenzene

The development of carbonaceous materials as metal-free catalysts integrating different types of catalysis in a single system represents a significant advance in cascade/tandem organic synthesis. Zero-dimensional carbon dots with tuneable optical properties and easily modifiable surface functionalities can be harnessed as a carbocatalyst for merging photooxidation and acid-catalyzed reactions in one pot. Herein, we explore carbon dots decorated with hydrogen sulfate groups as a photocatalyst for the dehydrogenative cross-coupling of xanthenes with ketones, arenes and 1,3-dicarbonyl compounds that showed high efficiency and selectivity under visible-light irradiation. The sulphated carbon dots demonstrate dual catalytic properties, wherein they induced the rapid photooxidation of xanthenes in the presence of molecular oxygen to form a hydroperoxy intermediate followed by coupling of nucleophiles catalysed by the acidic surface functional groups. The methodology represents an operationally simple pathway for the generation of C-C coupling products in a short reaction time with wide substrate scopes under mild conditions. The catalyst is easily separable and can be reused over multiple cycles with good efficiency.

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Authors Zhou, X; Xu, HY; Yang, QD; Chen, H; Wang, SF; Zhao, HQ in ROYAL SOC CHEMISTRY published article about DIRECT BETA-ARYLATION; FORM GAMMA-LACTAMS; BOND FUNCTIONALIZATIONS; PROPARGYL ALCOHOLS; SATURATED KETONES; ISOINDOLINONES; DEHYDROGENATION; CARBONYLATION; OLEFINATION; EFFICIENT in [Zhou, Xi; Xu, Hongyan; Yang, Qiaodan; Chen, Hua; Zhao, Huaiqing] Univ Jinan, Sch Chem & Chem Engn, Jinan 250022, Shandong, Peoples R China; [Wang, Shoufeng] Univ Jinan, Shandong Prov Key Lab Fluorine Chem & Chem Mat, Sch Chem & Chem Engn, Jinan 250022, Shandong, Peoples R China in 2019, Cited 64. HPLC of Formula: C8H8O2. The Name is 3-Methylbenzoic acid. Through research, I have a further understanding and discovery of 99-04-7

A cobalt and copper catalyzed reaction protocol has been developed to achieve the oxidative C-H/N-H annulation of benzamides containing an 8-aminoquinoline moiety as the directing group with ketones. Structurally diverse isoindolin-1-ones were furnished by the reaction of various substituent benzamides with ketones.

HPLC of Formula: C8H8O2. Bye, fridends, I hope you can learn more about C8H8O2, If you have any questions, you can browse other blog as well. See you lster.

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An article Pyridine-Enabled C-N Bond Activation for the Rapid Construction of Amides and 4-Pyridylglyoxamides by Cooperative Palladium/Copper Catalysis WOS:000543667400038 published article about PEPTIDE COUPLING REAGENTS; ALPHA-KETOAMIDES; CARBOXYLIC-ACIDS; OXIDATIVE CLEAVAGE; AMIDATION; BENZAMIDES; SECONDARY; ALDEHYDES; PRODUCTS; ALCOHOLS in [Song, Liangliang; Claessen, Sander; Van der Eycken, Erik V.] Katholieke Univ Leuven, Lab Organ & Microwave Assisted Chem LOMAC, Dept Chem, B-3001 Leuven, Belgium; [Van der Eycken, Erik V.] Peoples Friendship Univ Russia RUDN Univ, Moscow 117198, Russia in 2020, Cited 56. Recommanded Product: 99-04-7. The Name is 3-Methylbenzoic acid. Through research, I have a further understanding and discovery of 99-04-7

A pyridine-enabled C-N bond activation of peptidomimetics employing cooperative palladium/copper catalysis in water is developed. Diverse amides and 4-pyridylglyoxamides are simultaneously synthesized through two steps from commercially available materials in a rapid, environmentally friendly, and high atom-economical manner.

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Quality Control of 3-Methylbenzoic acid. Authors Wang, L; Wang, YY; Tao, Y; Zhang, NN; Li, SB in ELSEVIER published article about in [Wang, Liang; Tao, Yu; Zhang, Nana; Li, Shubai] Changzhou Vocat Inst Engn, Sch Chem & Pharmaceut Engn, Changzhou 213164, Peoples R China; [Wang, Yaoyao] Changzhou Univ, Sch Petrochem Engn, Jiangsu Key Lab Adv Catalyt Mat & Technol, Changzhou 213164, Peoples R China in 2021, Cited 30. The Name is 3-Methylbenzoic acid. Through research, I have a further understanding and discovery of 99-04-7

Nickel-catalyzed reduction of (het)arenecarboxylic acids with hydrosilanes in the presence of dimethyl dicarbonate as the activator affords the corresponding aldehydes. The role of the activator is the conversion of the acids into their anhydrides undergoing C?O cleavage. The good yields were achieved in case of substrates bearing electron-donating and electron-neutral groups.

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Hu, FP; Cui, XF; Lu, GQ; Huang, GS in [Hu, Fang-Peng; Cui, Xin-Feng; Lu, Guo-Qiang; Huang, Guo-Sheng] Lanzhou Univ, Dept Chem, State Key Lab Appl Organ Chem, Key Lab Nonferrous Met Chem & Resources Utilizat, Lanzhou 730000, Peoples R China published Base-promoted Lewis acid catalyzed synthesis of quinazoline derivatives in 2020.0, Cited 71.0. COA of Formula: C8H8O2. The Name is 3-Methylbenzoic acid. Through research, I have a further understanding and discovery of 99-04-7.

A one-pot protocol has been developed for the synthesis of quinazolinones from amide-oxazolines with TsClviaa cyclic 1,3-azaoxonium intermediate and 6 pi electron cyclization in the presence of a Lewis acid and base. The process is operationally simple and has a broad substrate scope. This method provides a unique strategy for the construction of quinazolinones.

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I found the field of Science & Technology – Other Topics very interesting. Saw the article Organic semiconductor photocatalyst can bifunctionalize arenes and heteroarenes published in 2019. Quality Control of 1,3-Dimethoxybenzene, Reprint Addresses Konig, B (corresponding author), Univ Regensburg, Fak Chem & Pharm, D-93040 Regensburg, Germany.; Antonietti, M (corresponding author), Max Planck Inst Colloids & Interfaces, Dept Colloid Chem, Res Campus Golm, D-14424 Potsdam, Germany.. The CAS is 151-10-0. Through research, I have a further understanding and discovery of 1,3-Dimethoxybenzene

Photoexcited electron-hole pairs on a semiconductor surface can engage in redox reactions with two different substrates. Similar to conventional electrosynthesis, the primary redox intermediates afford only separate oxidized and reduced products or, more rarely, combine to one addition product. Here, we report that a stable organic semiconductor material, mesoporous graphitic carbon nitride (mpg-CN), can act as a visible-light photoredox catalyst to orchestrate oxidative and reductive interfacial electron transfers to two different substrates in a two-or three-component system for direct twofold carbon-hydrogen functionalization of arenes and heteroarenes. The mpg-CN catalyst tolerates reactive radicals and strong nucleophiles, is straightforwardly recoverable by simple centrifugation of reaction mixtures, and is reusable for at least four catalytic transformations with conserved activity.

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Reference:
Isothiazole – Wikipedia,
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