Tag: 100-200

On August 31, 2015, Sun, Kai; Li, Yan; Zhang, Qian published an article.Name: 1-Fluoro-2-methoxybenzene The title of the article was Copper-catalyzed arenes amination with saccharins. And the article contained the following:

Synthesis of N-arylsaccharins I [R = 4-C6H5C6H4, C6H5, 1-naphthyl, etc.] and N-arylisothioazolones e.g. II [R1 = CH3, R2 = 4-ClC6H4] via copper-catalyzed direct C-N bond formation of simple arenes with saccharins/isothiazolones under relatively mild conditions was developed. This work provided a new method for oxidative coupling of aromatic C(sp2)-H bonds and N-H bonds by using arenes as limiting reagents. The experimental process involved the reaction of 1-Fluoro-2-methoxybenzene(cas: 321-28-8).Name: 1-Fluoro-2-methoxybenzene

The Article related to arylsaccharin regioselective preparation mechanism, saccharin arene copper catalyst amination regioselective, arylisothiazolone regioselective preparation mechanism, isothiazolone arene copper catalyst amination regioselective and other aspects.Name: 1-Fluoro-2-methoxybenzene

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

On July 16, 2021, Thorwart, Thaddaus; Roth, Daniel; Greb, Lutz published an article.Quality Control of 1,2-Dimethoxybenzene The title of the article was Bis(pertrifluoromethylcatecholato)silane: Extreme Lewis Acidity Broadens the Catalytic Portfolio of Silicon. And the article contained the following:

Given its earth abundance, Si is ideal for constructing Lewis acids of use in catalysis or materials science. Neutral silanes were limited to moderate Lewis acidity, until halogenated catecholato ligands provoked a significant boost. However, catalytic applications of bis(perhalocatecholato)silanes were suffering from very poor solubility and unknown deactivation pathways. The novel per(trifluoromethyl)catechol, H2catCF3, and adducts of its Si complex Si(catCF3)2 (1) are described. According to the computed F- ion affinity, 1 ranks among the strongest neutral Lewis acids currently accessible in the condensed phase. The improved robustness and affinity of 1 enable deoxygenations of aldehydes, ketones, amides, or phosphine oxides, and a carbonyl-olefin metathesis. All those transformations have never been catalyzed by a neutral silane. Attempts to obtain donor-free 1 attest to the extreme Lewis acidity by stabilizing adducts with even the weakest donors, such as benzophenone or hexaethyl disiloxane. The experimental process involved the reaction of 1,2-Dimethoxybenzene(cas: 91-16-7).Quality Control of 1,2-Dimethoxybenzene

The Article related to silane fluoromethylcatecholato preparation lewis acidity deoxygenation metathesis catalyst, crystal structure silicon trifluoromethylcatechol complex, lewis superacids, catechol, deoxygenation, homogeneous catalysis, silicon and other aspects.Quality Control of 1,2-Dimethoxybenzene

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

On June 15, 2021, Wang, Juan; Ming, Yuezhang; Li, Youming; Huang, Mingquan; Luo, Siqi; Li, Huifeng; Li, Hehe; Wu, Jihong; Sun, Xiaotao; Luo, Xuelian published an article.Application of 91-16-7 The title of the article was Characterization and comparative study of the key odorants in Caoyuanwang mild-flavor style Baijiu using gas chromatography-olfactometry and sensory approaches. And the article contained the following:

Caoyuanwang Baijiu (CYW), a mild-flavor style Baijiu (MSB), is popular in northern China. However, there is a lack of studies reporting its aroma-active components. The aroma compounds of five CYW samples were analyzed using gas chromatog.-olfactory-mass spectrometry coupled with aroma extraction dilution anal. Fifty-five aroma-active compounds were identified in CYW, of which 27 had odor activity values ≥ 1. Reconstituted models successfully simulated the aroma profiles of CYW. The omission tests elucidated that β-damascenone, di-Me trisulfide, Et pentanoate, butanoic acid, Et acetate, 3-methylbutanal, Et lactate, hexanoic acid, γ-nonalactone, 3-hydroxy-2-butanone, Et butanoate, 1-propanol, 4-(ethoxymethyl)-2-methoxy-phenol, and vanillin were key odorants in CYW. The addition test confirmed the significant influence of di-Me trisulfide on Chen-aroma note. Nine key odorants were identified as the differential quality-markers, and 85.71% key odorants were predicted using the partial least square regression (PLSR) anal., indicating the applicability of PLSR in selecting the target compounds for omission tests. The experimental process involved the reaction of 1,2-Dimethoxybenzene(cas: 91-16-7).Application of 91-16-7

The Article related to butanoic hydrocinnamic vanillin acid phenol odarant aroma caoyuanwang baijiu, caoyuanwang baijiu, gas chromatography-olfactory-mass spectrometry, key odorants, odor activity values, partial least squares regression analysis and other aspects.Application of 91-16-7

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

On May 10, 2021, Jiang, Zhong-Tao; Huang, Jiangkun; Zeng, Yaxin; Hu, Fangdong; Xia, Ying published an article.Synthetic Route of 321-28-8 The title of the article was Rhodium Catalyzed Regioselective C-H Allylation of Simple Arenes via C-C Bond Activation of Gem-difluorinated Cyclopropanes. And the article contained the following:

Herein, we report a rhodium catalyzed directing-group free regioselective C-H allylation of simple arenes. Readily available gem-difluorinated cyclopropanes can be employed as highly reactive allyl surrogates via a sequence of C-C and C-F bond activation, providing allyl arene derivatives in good yields with high regioselectivity under mild conditions. The robust methodol. enables facile late-stage functionalization of complex bioactive mols. The high efficiency of this reaction is also demonstrated by the high turnover number (TON, up to 1700) of the rhodium catalyst on gram-scale experiments Preliminary success on kinetic resolution of this transformation is achieved, providing a promising access to enantio-enriched gem-difluorinated cyclopropanes. The experimental process involved the reaction of 1-Fluoro-2-methoxybenzene(cas: 321-28-8).Synthetic Route of 321-28-8

The Article related to arene cyclopropane geminal difluorinated rhodium regioselective allylation catalyst, fluorinated allylarene preparation, c−c bond activation, c−h allylation, directing-group-free, gem-difluorinated cyclopropane, rhodium catalysis and other aspects.Synthetic Route of 321-28-8

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Hofer, Manuel; Genoux, Alexandre; Kumar, Roopender; Nevado, Cristina published an article in 2017, the title of the article was Gold-Catalyzed Direct Oxidative Arylation with Boron Coupling Partners.Name: 1-Fluoro-2-methoxybenzene And the article contains the following content:

An efficient synthesis of biaryls through a gold-catalyzed oxidative cross-coupling of arenes with strong electron-deprived aryl boronates is presented herein. Regio- and chemocontrol are achieved by the selective activation of these coupling partners by gold at different oxidation states. Under reaction conditions devoid of basic additives or directing groups, the role of acetato ligand as an internal base has been revealed as a key parameter for expanding the reaction scope in these transformations. The experimental process involved the reaction of 1-Fluoro-2-methoxybenzene(cas: 321-28-8).Name: 1-Fluoro-2-methoxybenzene

The Article related to arene aryl boronate direct oxidative arylation cross coupling gold, biaryl preparation mol crystal structure, gold oxidative arylation cross catalyst, arylation, cross-coupling, gold, homogeneous catalysis, reaction mechanisms and other aspects.Name: 1-Fluoro-2-methoxybenzene

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Yan, Boyu; Zhou, Yutong; Wu, Jieliang; Ran, Maogang; Li, Huihui; Yao, Qiuli published an article in 2021, the title of the article was Catalyst-free reductive hydrogenation or deuteration of aryl-heteroatom bonds induced by light.Recommanded Product: 93-04-9 And the article contains the following content:

A simple and catalyst-free photochem. strategy for the direct reduction of aryl trimethylammonium salts ArNMe3OTf (Ar = biphenyl-4-yl, 2-naphthyl, quinolin-3-yl, etc.), aryl triflates Ar1OTf (Ar1 = biphenyl-3-yl, 1,6-dimethylpyridin-4-yl, benzothiazol-5-yl, etc.), and haloarenes Ar2X (Ar2 = biphenyl-4-yl, 2-naphthyl, quinolin-4-yl, etc.; X = Cl, Br, I) to arenes ArH/Ar1H or deuterium-labeled arenes ArD/Ar1D/Ar2D was described. A broad range of substrate scope was demonstrated with high yields and deuterium incorporations. Radical clock experiments indicate the formation of aryl radical intermediates that can also be trapped by phenols. The experimental process involved the reaction of 2-Methoxynaphthalene(cas: 93-04-9).Recommanded Product: 93-04-9

The Article related to aromatic hydrocarbon preparation, aryl deuterated compound preparation, quaternary arylammonium salt reductive hydrogenation deuteration, triflate aryl reductive hydrogenation deuteration, arylhalide dehalogenation deuteration and other aspects.Recommanded Product: 93-04-9

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

On August 31, 2015, Sun, Kai; Li, Yan; Zhang, Qian published an article.Name: 1-Fluoro-2-methoxybenzene The title of the article was Copper-catalyzed arenes amination with saccharins. And the article contained the following:

Synthesis of N-arylsaccharins I [R = 4-C6H5C6H4, C6H5, 1-naphthyl, etc.] and N-arylisothioazolones e.g. II [R1 = CH3, R2 = 4-ClC6H4] via copper-catalyzed direct C-N bond formation of simple arenes with saccharins/isothiazolones under relatively mild conditions was developed. This work provided a new method for oxidative coupling of aromatic C(sp2)-H bonds and N-H bonds by using arenes as limiting reagents. The experimental process involved the reaction of 1-Fluoro-2-methoxybenzene(cas: 321-28-8).Name: 1-Fluoro-2-methoxybenzene

The Article related to arylsaccharin regioselective preparation mechanism, saccharin arene copper catalyst amination regioselective, arylisothiazolone regioselective preparation mechanism, isothiazolone arene copper catalyst amination regioselective and other aspects.Name: 1-Fluoro-2-methoxybenzene

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

On July 16, 2021, Thorwart, Thaddaus; Roth, Daniel; Greb, Lutz published an article.Quality Control of 1,2-Dimethoxybenzene The title of the article was Bis(pertrifluoromethylcatecholato)silane: Extreme Lewis Acidity Broadens the Catalytic Portfolio of Silicon. And the article contained the following:

Given its earth abundance, Si is ideal for constructing Lewis acids of use in catalysis or materials science. Neutral silanes were limited to moderate Lewis acidity, until halogenated catecholato ligands provoked a significant boost. However, catalytic applications of bis(perhalocatecholato)silanes were suffering from very poor solubility and unknown deactivation pathways. The novel per(trifluoromethyl)catechol, H2catCF3, and adducts of its Si complex Si(catCF3)2 (1) are described. According to the computed F- ion affinity, 1 ranks among the strongest neutral Lewis acids currently accessible in the condensed phase. The improved robustness and affinity of 1 enable deoxygenations of aldehydes, ketones, amides, or phosphine oxides, and a carbonyl-olefin metathesis. All those transformations have never been catalyzed by a neutral silane. Attempts to obtain donor-free 1 attest to the extreme Lewis acidity by stabilizing adducts with even the weakest donors, such as benzophenone or hexaethyl disiloxane. The experimental process involved the reaction of 1,2-Dimethoxybenzene(cas: 91-16-7).Quality Control of 1,2-Dimethoxybenzene

The Article related to silane fluoromethylcatecholato preparation lewis acidity deoxygenation metathesis catalyst, crystal structure silicon trifluoromethylcatechol complex, lewis superacids, catechol, deoxygenation, homogeneous catalysis, silicon and other aspects.Quality Control of 1,2-Dimethoxybenzene

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

On June 15, 2021, Wang, Juan; Ming, Yuezhang; Li, Youming; Huang, Mingquan; Luo, Siqi; Li, Huifeng; Li, Hehe; Wu, Jihong; Sun, Xiaotao; Luo, Xuelian published an article.Application of 91-16-7 The title of the article was Characterization and comparative study of the key odorants in Caoyuanwang mild-flavor style Baijiu using gas chromatography-olfactometry and sensory approaches. And the article contained the following:

Caoyuanwang Baijiu (CYW), a mild-flavor style Baijiu (MSB), is popular in northern China. However, there is a lack of studies reporting its aroma-active components. The aroma compounds of five CYW samples were analyzed using gas chromatog.-olfactory-mass spectrometry coupled with aroma extraction dilution anal. Fifty-five aroma-active compounds were identified in CYW, of which 27 had odor activity values ≥ 1. Reconstituted models successfully simulated the aroma profiles of CYW. The omission tests elucidated that β-damascenone, di-Me trisulfide, Et pentanoate, butanoic acid, Et acetate, 3-methylbutanal, Et lactate, hexanoic acid, γ-nonalactone, 3-hydroxy-2-butanone, Et butanoate, 1-propanol, 4-(ethoxymethyl)-2-methoxy-phenol, and vanillin were key odorants in CYW. The addition test confirmed the significant influence of di-Me trisulfide on Chen-aroma note. Nine key odorants were identified as the differential quality-markers, and 85.71% key odorants were predicted using the partial least square regression (PLSR) anal., indicating the applicability of PLSR in selecting the target compounds for omission tests. The experimental process involved the reaction of 1,2-Dimethoxybenzene(cas: 91-16-7).Application of 91-16-7

The Article related to butanoic hydrocinnamic vanillin acid phenol odarant aroma caoyuanwang baijiu, caoyuanwang baijiu, gas chromatography-olfactory-mass spectrometry, key odorants, odor activity values, partial least squares regression analysis and other aspects.Application of 91-16-7

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

On November 5, 2020, Zhang, Cheng; Li, Jiaohong; Wu, Xiaomao; Long, Youhua; An, Huaming; Pan, Xinglu; Li, Ming; Dong, Fengshou; Zheng, Yongquan published an article.Recommanded Product: 1,2-Dimethoxybenzene The title of the article was Rapid degradation of dimethomorph in polluted water and soil by Bacillus cereus WL08 immobilized on bamboo charcoal-sodium alginate. And the article contained the following:

The presence of hazardous dimethomorph residues in the environment poses a threat to birds, aquatic organisms, and mammals. The novel pure strain, Bacillus cereus WL08, responsible for detoxifying dimethomorph was isolated from dimethomorph-polluted soil. The WL08 immobilized system was developed using bamboo charcoal (BC) and sodium alginate (SA). Immobilization significantly improved the WL08 tolerance and stability. Under optimal conditions (pH 7.0 and 30°), free and immobilized WL08 degraded 66.95 and 96.88% of 50 mg/L dimethomorph within 72 h, resp. WL08 effectively degraded dimethomorph to simple products which had lower toxic than dimethomorph. In a continuous reactor, immobilized WL08 removed 85.61% of dimethomorph for 30 days at a 50-100 mg/L influent concentration For field soil sprayed with 4.20 kg a.i./ha 80% dimethomorph water dispersible granules with immobilized WL08, a lower half-life (1.93 days) was observed vs. free WL08 (4.28 days) and natural dissipation (23.82 days). Immobilized WL08 is considered a tool to remove dimethomorph from water/soil systems. Results provided a feasible, microbe-based strategy to bioremediate dimethomorph-polluted environments. The experimental process involved the reaction of 1,2-Dimethoxybenzene(cas: 91-16-7).Recommanded Product: 1,2-Dimethoxybenzene

The Article related to degradation dimethomorph fungicide polluted soil water, bamboo charcoal sodium alginate immobilized bacillus dimethomorph degradation agent, bacillus cereus wl08, bioremediation, degradation, dimethomorph, immobilization and other aspects.Recommanded Product: 1,2-Dimethoxybenzene

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem