Tag: 100-200

A efficient protocol for the synthesis of thioamides in [DBUH][OAc] at room temperature was written by Cao, Xian-Ting;Qiao, Li;Zheng, Hui;Yang, Hui-Yong;Zhang, Peng-Fei. And the article was included in RSC Advances in 2018.HPLC of Formula: 63968-85-4 This article mentions the following:

A novel, simple and eco-friendly method to synthesize thioamides from aryl nitriles and sodium sulfide (Na₂S·9H₂O) catalyzed by 1,8-diazabicyclo[5,4,0]undec-7-enium acetate ([DBUH][OAc]) ionic liquid (IL) at room temperature was developed. In this reaction, readily available inorganic salt (Na₂S·9H₂O) served as the sulfur source and various functional groups of aryl nitriles were well tolerated at room temperature In addition, the products were easily separated from the IL which could be reused at least five times without considerable loss of its activity and applied in the green, concise synthesis of ethionamide. In the experiment, the researchers used many compounds, for example, 2-(Trifluoromethoxy)benzonitrile (cas: 63968-85-4HPLC of Formula: 63968-85-4).

2-(Trifluoromethoxy)benzonitrile (cas: 63968-85-4) belongs to nitriles. Nitriles are polar, as indicated by high dipole moments. As liquids, they have high relative permittivities, often in the 30s. Nitriles are susceptible to hydrogenation over diverse metal catalysts. The reaction can afford either the primary amine (RCH2NH2) or the tertiary amine ((RCH2)3N), depending on conditions.HPLC of Formula: 63968-85-4

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Highly Enantioselective Iridium-Catalyzed Hydrogenation of o-Amidophenyl Ketones Enabled by 1,2-Diphenylethylenediamine-Derived P,N,N-Ligands with Tertiary Amine Terminus was written by Wan, Yin-Bo;Hu, Xiang-Ping. And the article was included in Organic Letters in 2022.SDS of cas: 53312-77-9 This article mentions the following:

A readily available and highly modular class of chiral P,N,N-ligands based on a structurally flexible nonchiral phosphine-amine framework with an optically active 1,2-diphenylethylenediamine unit bearing a tertiary amine terminus as the chiral source were developed and successfully applied in the Ir-catalyzed asym. hydrogenation of o-amidophenyl ketones. These tridentate P,N,N-ligands exhibited excellent activity, enantioselectivity, and substrate tolerance, thus furnishing various optically active o-amidobenzhydrols in up to 99% yields and with >99% ee. The utility of this protocol was proven by synthetically diverse product transformation and highly enantioselective production of a rice plant growth regulator, (S)-inabenfide. In the experiment, the researchers used many compounds, for example, 2-Amino-3-chlorobenzonitrile (cas: 53312-77-9SDS of cas: 53312-77-9).

2-Amino-3-chlorobenzonitrile (cas: 53312-77-9) belongs to nitriles. Nitriles are polar, as indicated by high dipole moments. As liquids, they have high relative permittivities, often in the 30s. Asymmetric bioreduction of nitriles is an attractive route to produce optically active nitriles as current metal-catalyzed hydrogenations tend to have low reactivity.SDS of cas: 53312-77-9

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Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Discovery and Characterization of MAPK-activated Protein Kinase-2 Prevention of Activation Inhibitors was written by Cumming, John G.;Debreczeni, Judit E.;Edfeldt, Fredrik;Evertsson, Emma;Harrison, Martin;Holdgate, Geoffrey A.;James, Michael J.;Lamont, Scott G.;Oldham, Keith;Sullivan, Jane E.;Wells, Stuart L.. And the article was included in Journal of Medicinal Chemistry in 2015.Quality Control of 3-Amino-4-methylbenzonitrile This article mentions the following:

Two structurally distinct series of novel, MAPK-activated kinase-2 prevention of activation inhibitors have been discovered by high throughput screening. Preliminary structure-activity relationship (SAR) studies revealed substructural features that influence the selective inhibition of the activation by p38α of the downstream kinase MK2 in preference to an alternative substrate, MSK1. Enzyme kinetics, surface plasmon resonance (SPR), 2D protein NMR, and x-ray crystallog. were used to determine the binding mode and the mol. mechanism of action. The compounds bind competitively to the ATP binding site of p38α but unexpectedly with higher affinity in the p38α-MK2 complex compared with p38α alone. This observation is hypothesized to be the origin of the substrate selectivity. The two lead series identified are suitable for further investigation for their potential to treat chronic inflammatory diseases with improved tolerability over previously studied p38α inhibitors. In the experiment, the researchers used many compounds, for example, 3-Amino-4-methylbenzonitrile (cas: 60710-80-7Quality Control of 3-Amino-4-methylbenzonitrile).

3-Amino-4-methylbenzonitrile (cas: 60710-80-7) belongs to nitriles. The electronic structure of nitriles is very similar to that of an alkyne with the main difference being the presence of a set of lone pair electrons on the nitrogen. Alkyl nitriles are sufficiently acidic to undergo deprotonation of the C-H bond adjacent to the CN group.Strong bases are required, such as lithium diisopropylamide and butyl lithium. The product is referred to as a nitrile anion. Quality Control of 3-Amino-4-methylbenzonitrile

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Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Dynamic modeling of consecutive reactions: application to the acrylonitrile amination was written by Kadri, Brahim;Fabre, Bernard;Accary, Armand;Kessler, Mathieu. And the article was included in Canadian Journal of Chemical Engineering in 1998.Quality Control of 3,3′,3”-Nitrilotripropanenitrile This article mentions the following:

When dealing with optimal control problems to maximize the selectivity of reactions for fine chem. synthesis, representative kinetic and thermodn. models should be available. While literature appears to be very extensive on theor. approaches to solve the problem, examples presenting complete models of chem. transformations are scarce. This paper presents the identification of consecutive reactions carried out in a batch reactor. Material and energy balances, satisfying dynamical state evolutions in the temperature range 20-60°C are deduced, for concentrations of acrylonitrile ranging up to 1.6 kmol·m^-3. The stoichiometric network is simplified into two reactions, one reversible and one irreversible. Reaction enthalpies are measured from isothermal runs conducted in the RC1 heat-flow calorimeter from Mettler Toledo. In the experiment, the researchers used many compounds, for example, 3,3′,3”-Nitrilotripropanenitrile (cas: 7528-78-1Quality Control of 3,3′,3”-Nitrilotripropanenitrile).

3,3′,3”-Nitrilotripropanenitrile (cas: 7528-78-1) belongs to nitriles. The electronic structure of nitriles is very similar to that of an alkyne with the main difference being the presence of a set of lone pair electrons on the nitrogen. Industrially, the main methods for producing nitriles are ammoxidation and hydrocyanation. Both routes are green in the sense that they do not generate stoichiometric amounts of salts.Quality Control of 3,3′,3”-Nitrilotripropanenitrile

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Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Photoinduced Copper-Catalyzed Asymmetric C(sp³)-H Alkynylation of Cyclic Amines by Intramolecular 1,5-Hydrogen Atom Transfer was written by Guo, Rui;Xiao, Haijing;Li, Sijia;Luo, Yixin;Bai, Jiahui;Zhang, Mengzhen;Guo, Yinlong;Qi, Xiaotian;Zhang, Guozhu. And the article was included in Angewandte Chemie, International Edition in 2022.SDS of cas: 53312-77-9 This article mentions the following:

The development of a mild and general method for C(sp³)-H functionalization of cyclic amines has been an ongoing challenge. In this work, authors describe the copper-catalyzed enantioselective C(sp³)-H alkynylation of unactivated cyclic 2-iodo-benzamide under photo-irradiation by intramol. 1,5-hydrogen atom transfer (HAT). The employment of a new bisoxazoline diphenylamine ligand, in conjunction with 1,1′-bi-2-naphthol, which significantly improved the reduction potential of the copper complex, was the key to success of this chem. Mechanistic and computational studies supported that the new copper complex served the dual role as a photoredox and coupling catalyst, the reaction went through a radical process, and the intramol. 1,5-HAT process was involved in the rate-limiting step. Apart from the broad substrate scope including unprecedented benzocyclic amines, this method also showed excellent diastereoselectivity in 2-monosubstituted cyclic amines via substrate control. In the experiment, the researchers used many compounds, for example, 2-Amino-3-chlorobenzonitrile (cas: 53312-77-9SDS of cas: 53312-77-9).

2-Amino-3-chlorobenzonitrile (cas: 53312-77-9) belongs to nitriles. Nitrile function is a very important functional group because it can be manipulated to other functional groups such as carboxylic acid by hydrolysis or amine by reduction, respectively. In conventional organic reductions, nitrile is reduced by treatment with lithium aluminium hydride to the amine. Reduction to the imine followed by hydrolysis to the aldehyde takes place in the Stephen aldehyde synthesis, which uses stannous chloride in acid.SDS of cas: 53312-77-9

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Liquid crystalline compounds with positive dielectric anisotropy was written by Bezborodov, V. S.;Lapanik, V. I.;Mikhalyonok, S. G.. And the article was included in Zhidkie Kristally i Ikh Prakticheskoe Ispol’zovanie in 2015.HPLC of Formula: 82380-17-4 This article mentions the following:

In this paper we present the results of the investigations of liquid crystalline (LC) compounds with pos. dielec. anisotropy. The anal. of the properties of polar mesomorphic compounds and the electrooptical and dynamic parameters of the LC compositions based on them has shown that the polar liquid crystalline 1,3,2- dioxaborinane derivatives have several advantages in comparison with other analogous polar compounds They are characterized by a low formation temperature and a wide temperature range of the nematic phase, and allow preparation of liquid crystalline compositions with a low threshold voltage and shorter switching times. In the experiment, the researchers used many compounds, for example, 2-Bromo-4-hydroxybenzonitrile (cas: 82380-17-4HPLC of Formula: 82380-17-4).

2-Bromo-4-hydroxybenzonitrile (cas: 82380-17-4) belongs to nitriles. Nitrile carbon shifts are in the range of 115–125 ppm whereas in isonitriles the shifts are around 155–165 ppm. Some nitriles are manufactured by heating carboxylic acids with ammonia in the presence of catalysts. This process is used to make nitriles from natural fats and oils, the products being used as softening agents in synthetic rubbers, plastics, and textiles and for making amines.HPLC of Formula: 82380-17-4

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Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Development of potential manufacturing routes for substituted thiophenes – preparation of halogenated 2-thiophenecarboxylic acid derivatives as building blocks for a new family of 2,6-dihaloaryl 1,2,4-triazole insecticides was written by Hull, John W. Jr.;Romer, Duane R.;Podhorez, David E.;Ash, Mezzie L.;Brady, Christine H.. And the article was included in Beilstein Journal of Organic Chemistry in 2007.Recommanded Product: 55406-13-8 This article mentions the following:

Potential manufacturing routes to three halogenated 2-thiophenecarboxylic acid derivatives, namely, 4-bromo-3-methyl-2-thiophenecarbonyl chloride, 3,4,5-trichloro-2-thiophenecarbonyl chloride, and 3,4,5-trichloro-2-thiophenecarbonitrile, from com. available thiophene raw materials have been developed and demonstrated on a laboratory scale. A one-pot bromination/debromination procedure developed for 3-methylthiophene gave 2,4-dibromo-3-methylthiophene. Carboxylic acid functionality was then introduced either by a Grignard metalation followed by carbonation with CO₂, or by a palladium catalyzed carbonylation procedure under CO pressure. The vapor phase chlorination of 2-thiophenecarbonitrile with chlorine gas at 500 °C with an average residence time of 6 s gave 3,4,5-trichloro-2-thiophenecarbonitrile in a 69% distilled yield, a process that was carried out on a multi-kilogram scale in the laboratory Finally, a route for the preparation of 3,4,5-trichloro-2-thiophenecarbonyl chloride was developed from tetrachlorothiophene via either a lithiation reaction with n-butyllithium in MTBE, or by a previously reported Grignard method using 1,2-dibromoethane as activator, followed by carbonation of the anion with CO₂ to give the trichloro-2-thiophenecarboxylic acid, which was readily converted to the corresponding acid chloride with SOCl₂. In the experiment, the researchers used many compounds, for example, 3-Methylthiophene-2-carbonitrile (cas: 55406-13-8Recommanded Product: 55406-13-8).

3-Methylthiophene-2-carbonitrile (cas: 55406-13-8) belongs to nitriles. Nitriles are polar, as indicated by high dipole moments. As liquids, they have high relative permittivities, often in the 30s. In conventional organic reductions, nitrile is reduced by treatment with lithium aluminium hydride to the amine. Reduction to the imine followed by hydrolysis to the aldehyde takes place in the Stephen aldehyde synthesis, which uses stannous chloride in acid.Recommanded Product: 55406-13-8

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Enantioselective catalytic reduction of ketones using C₂-symmetric diamines as chiral ligands was written by Gamez, Patrick;Fache, Fabienne;Mangeney, Pierre;Lemaire, Marc. And the article was included in Tetrahedron Letters in 1993.Quality Control of (R)-4-(1-Hydroxyethyl)benzonitrile This article mentions the following:

The catalytic enantioselective reduction of various prochiral ketones is reported using C₂-sym. diamines as ligands. Up to 99% e.e. at 100% conversion are obtained. In the experiment, the researchers used many compounds, for example, (R)-4-(1-Hydroxyethyl)benzonitrile (cas: 101219-69-6Quality Control of (R)-4-(1-Hydroxyethyl)benzonitrile).

(R)-4-(1-Hydroxyethyl)benzonitrile (cas: 101219-69-6) belongs to nitriles. Nitrile function is a very important functional group because it can be manipulated to other functional groups such as carboxylic acid by hydrolysis or amine by reduction, respectively. In conventional organic reductions, nitrile is reduced by treatment with lithium aluminium hydride to the amine. Reduction to the imine followed by hydrolysis to the aldehyde takes place in the Stephen aldehyde synthesis, which uses stannous chloride in acid.Quality Control of (R)-4-(1-Hydroxyethyl)benzonitrile

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Thermochemistry of substituted thiophenecarbonitrile derivatives was written by Ribeiro da Silva, Manuel A. V.;Santos, Ana Filipa L. O. M.. And the article was included in Journal of Chemical Thermodynamics in 2008.Electric Literature of C6H5NS This article mentions the following:

The standard (p° = 0.1 MPa) molar energies of combustion in oxygen of 2-thiophenecarbonitrile, 3-thiophenecarbonitrile, 2-thiopheneacetonitrile, 3-thiopheneacetonitrile, and 3-methyl-2-thiophenecarbonitrile were measured, at T = 298.15 K, by rotating-bomb calorimetry. The standard molar enthalpies of vaporization of these compounds at T = 298.15 K were determined using high temperature Calvet microcalorimetry. These values were used to derive the standard molar enthalpies of formation of the title compounds in their crystalline and gaseous phases. The standard molar enthalpies of formation for the title compounds in the gaseous state were derived and the results are interpreted in terms of structural effects. In the experiment, the researchers used many compounds, for example, 3-Methylthiophene-2-carbonitrile (cas: 55406-13-8Electric Literature of C6H5NS).

3-Methylthiophene-2-carbonitrile (cas: 55406-13-8) belongs to nitriles. Nitriles are polar, as indicated by high dipole moments. As liquids, they have high relative permittivities, often in the 30s. Nitrile groups in organic compounds can undergo a variety of reactions depending on the reactants or conditions. A nitrile group can be hydrolyzed, reduced, or ejected from a molecule as a cyanide ion.Electric Literature of C6H5NS

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Catalyst development for organocatalytic hydrosilylation of aromatic ketones and ketimines was written by Malkov, Andrei V.;Stewart-Liddon, Angus J. P.;McGeoch, Grant D.;Ramirez-Lopez, Pedro;Kocovsky, Pavel. And the article was included in Organic & Biomolecular Chemistry in 2012.HPLC of Formula: 36057-44-0 This article mentions the following:

A new family of Lewis basic 2-pyridyloxazolines have been developed, which can act as efficient organocatalysts for the enantioselective reduction of prochiral aromatic ketones and ketimines with trichlorosilane, a readily available and inexpensive reagent. 1-Isoquinolyloxazoline, derived from mandelic acid, was identified as the most efficient catalyst of the series, capable of delivering high enantioselectivities in the reduction of both ketones (up to 94% ee) and ketimines (up to 89% ee). In the experiment, the researchers used many compounds, for example, 4-methoxypicolinonitrile (cas: 36057-44-0HPLC of Formula: 36057-44-0).

4-methoxypicolinonitrile (cas: 36057-44-0) belongs to nitriles. Nitrile carbon shifts are in the range of 115–125 ppm whereas in isonitriles the shifts are around 155–165 ppm. In conventional organic reductions, nitrile is reduced by treatment with lithium aluminium hydride to the amine. Reduction to the imine followed by hydrolysis to the aldehyde takes place in the Stephen aldehyde synthesis, which uses stannous chloride in acid.HPLC of Formula: 36057-44-0

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts