Month: November 2022

Biosynthesis of α-Substituted β-Ketoesters via the Tandem Knoevenagel Condensation-Reduction Reaction Using a Single Enzyme was written by Liu, Xiaolong;Li, Xiangjie;Wang, Zhelun;Zhou, Jinlong;Fan, Xinjiong;Fu, Yao. And the article was included in ACS Sustainable Chemistry & Engineering in 2020.Computed Properties of C6H9ClO3 The following contents are mentioned in the article:

Saturated α-substituted β ketoesters are important building blocks in synthesis of pharmaceuticals and agrochems. Herein, we report a one-pot biosynthesis of α-substituted β-ketoesters via Knoevenagel condensation and reduction of received unsaturated alkenes in situ, catalyzed by single ene-reductase (NerA). A series of inexpensive and readily available aldehydes and 1,3-diketones were condensed and reduced by NerA in aqueous solution at room temperature We also note that low loadings (3 mg/mL) of NerA are sufficient to facilitate the cascade process, both E and Z isomeric intermediates can be reduced effectively and improved the overall yield up to 95%. Meanwhile, the method can be applied in preparative-scale synthesis of pharmaceutical intermediate. This process conforms to the concepts of green chem. and shows advantages for synthesis of high value saturated α-substituted β ketoesters. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Computed Properties of C6H9ClO3).

Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3) belongs to organic chlorides. Organic chlorides can cause corrosion in pipelines, valves and condensers, and cause catalyst poisoning. The hydrocarbon processing industry (HPI) and others are affected by damage caused by these substances. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.Computed Properties of C6H9ClO3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

One-step Access to Resorcinsalens-Solvent-Dependent Synthesis, Tautomerism, Self-sorting and Supramolecular Architectures of Chiral Polyimine Analogues of Resorcinarene was written by Szymkowiak, Joanna;Warzajtis, Beata;Rychlewska, Urszula;Kwit, Marcin. And the article was included in Chemistry – A European Journal in 2018.SDS of cas: 95-88-5 The following contents are mentioned in the article:

Substituted 2,4- and 4,6-dihydroxyisophthalaldehydes were condensed with optically pure and racemic trans-1,2-diaminocyclohexane to form resorcinarene-like polyimine macrocycles (resorcinsalens), the structure and stoichiometry of which were controlled by the choice of the reaction medium. Particularly, the cyclocondensation reactions were driven by the solubility, tautomerization, or by social self-sorting. The resorcinsalens crystallized as inclusion compounds, in which the guest mols. were situated either in channels or in voids. In the highly hydrated crystals of one of the [2+2] macrocycles and chloroform-solvated crystals of a [4+4] product the channels were interconnected, as in zeolites, enabling possible migration of loosely bound solvent mols. in three dimensions. The association mode depended on the structural modification of the host mol. and the type of included solvent mol.(s). This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5SDS of cas: 95-88-5).

4-Chlororesorcinol (cas: 95-88-5) belongs to organic chlorides. Organochlorines are organic compounds having multiple chlorine atoms. They were the first synthetic pesticides that were used in agriculture. They are resistant to most microbial and chemical degradations. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.SDS of cas: 95-88-5

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Phase behavior of mixture of alkyl ether carboxylate surfactants with different cationic surfactants was written by Zhang, Li;Zhang, Weidong;Sha, Ou;Li, Yingcheng. And the article was included in Huaxue Fanying Gongcheng Yu Gongyi in 2020.Application of 122-18-9 The following contents are mentioned in the article:

The phase behavior of alkyl ether carboxylate surfactants with cationic surfactant was studied. The effects of anionic surfactant structure, molar ratio, salinity and group number of polyether on the phase behavior of the anionic-cationic complex system were investigated by the phase behavior experiment The optimum salinities were found out for the different mixtures as 30 g/L, 100 g/L and 200 g/L. The critical micelle concentration (CMC) and surface tension of anionic surfactants, cationic surfactants and the mixture of anionic-cationic surfactants were tested. The results showed that these mixtures produced ultralow CMC (2 mg/L), low surface tension (32 mN/m), and high oil solubilization parameter (SP=12). The experiment results were possibly useful in developing new mixture of anionic/cationic surfactant used for enhanced oil recovery (EOR) application in different reservoir in the future. This study involved multiple reactions and reactants, such as N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9Application of 122-18-9).

N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9) belongs to organic chlorides. Organic chlorides can cause corrosion in pipelines, valves and condensers, and cause catalyst poisoning. The hydrocarbon processing industry (HPI) and others are affected by damage caused by these substances. Alkyl chlorides are versatile building blocks in organic chemistry. While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available.Application of 122-18-9

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Gold-catalyzed [4+3]-Annulations of Benzopyryliums with Vinyldiazo Carbonyls to Form Bicyclic Heptatriene Rings with Skeletal Rearrangement was written by Sekar Kulandai Raj, Antony;Liu, Rai-Shung. And the article was included in Advanced Synthesis & Catalysis in 2020.Application of 1186603-47-3 The following contents are mentioned in the article:

Gold catalyzed [4+3]-annulations between benzopyryliums e.g., 2-(phenylethynyl)benzaldehyde and 3-alkyl-2-diazo-3-vinyl carbonyls RC(=CH₂)C(=N₂)C(O)R¹ (R = Me, n-Pr, n-Bu; R¹ = n-Bu, Ph, cyclohexyl), yielding 7H-benzo[7]annulene products e.g., I efficiently were reported. Notably, the carbon skeletons of resulting 7H-benzo[7]annulenes e.g., I are structurally rearranged, accompanied by migrations of their alkyl and ketone motifs. Apart from applicable substrates over a wide scope, these annulations are applicable to pyryliums and 3-alkyl-2-diazo-3-vinyl esters to increase their reaction significance. A mechanism involving an initial [4+2]-cycloaddition between benzopyryliums and 3-alkyl-2-diazo-3-vinyl carbonyl species, followed by formation of gold carbenes to induce a ring expansion and group migrations was postulated. This study involved multiple reactions and reactants, such as 5-Chloro-2-(phenylethynyl)benzaldehyde (cas: 1186603-47-3Application of 1186603-47-3).

5-Chloro-2-(phenylethynyl)benzaldehyde (cas: 1186603-47-3) belongs to organic chlorides. Chlorination modifies the physical properties of hydrocarbons in several ways. These compounds are typically denser than water due to the higher atomic weight of chlorine versus hydrogen. Alkyl chlorides readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.Application of 1186603-47-3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Trimetallic Au@PdPt porous core-shell structured nanowires for oxygen reduction electrocatalysis was written by Liu, Songliang;Yin, Shuli;Zhang, Hugang;Jiao, Shiqian;Wang, Ziqiang;Xu, You;Li, Xiaonian;Wang, Liang;Wang, Hongjing. And the article was included in Chemical Engineering Journal (Amsterdam, Netherlands) in 2022.Name: Sodium tetrachloropalladate(II) The following contents are mentioned in the article:

The design of porous one-dimensional (1D) Pt-based nanoarchitectures is significant for fuel cells. The incorporation of Au into Pt-based electrocatalysts is an efficient strategy to enhance its electrocatalytic performance. In this work, we propose a facile strategy to synthesize Au@PdPt porous nanowire architecture with an Au nanowire (Au NW) as the core and a porous PdPt surface as the shell (Au@PdPt pNWs). 1D core-shell nanoarchitectures with porous surface provide sufficient active sites and rich reactant transfer channels for O₂ adsorption and activation. Compared with PdPt mesoporous nanoparticles and com. Pt/C catalyst, the Au@PdPt pNWs show superior catalytic performance for electrocatalytic oxygen reduction reaction. The present synthetic strategy can be widely used for the preparation of porous core-shell structured metallic nanowires for various electrocatalytic applications. This study involved multiple reactions and reactants, such as Sodium tetrachloropalladate(II) (cas: 13820-53-6Name: Sodium tetrachloropalladate(II)).

Sodium tetrachloropalladate(II) (cas: 13820-53-6) belongs to organic chlorides. Organic chlorides can cause corrosion in pipelines, valves and condensers, and cause catalyst poisoning. The hydrocarbon processing industry (HPI) and others are affected by damage caused by these substances. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Name: Sodium tetrachloropalladate(II)

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Analysis of monitoring results of 32 dyes in oxidized hair dyes was written by Wang, Sha-sha;Ren, Lian;Liao, Xue. And the article was included in Huagong Sheji Tongxun in 2021.SDS of cas: 95-88-5 The following contents are mentioned in the article:

Using the determination method of 32 components including p-phenylenediamine in the “Safety Tech. Specifications for Cosmetics” (2015 edition), 24 batches of com. available oxidized hair dyes were tested, and the test results, batch formulations, and label indications were tested. The quality of cosmetics on the market was compared and analyzed to provide tech. support for cosmetics supervision. The results showed that none of the 32 components were detected, 16 batches of samples had inconsistent test results and batch formula, accounting for 67%, and 16 batches of samples had inconsistent test results and labeling, accounting for 67%, 5 batches of samples had inconsistent batch formula and labeling, accounting for 21%, and there were 16 batches of problematic samples, and the failure rate was 67%. It is recommended that the standardized supervision of production enterprises should be strengthened. This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5SDS of cas: 95-88-5).

4-Chlororesorcinol (cas: 95-88-5) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. Alkyl chlorides are versatile building blocks in organic chemistry. While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available.SDS of cas: 95-88-5

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

The physical significance of the Kamlet-Taft π* parameter of ionic liquids was written by Weiss, Nadine;Schmidt, Caroline H.;Thielemann, Gabi;Heid, Esther;Schroeder, Christian;Spange, Stefan. And the article was included in Physical Chemistry Chemical Physics in 2021.Reference of 5137-55-3 The following contents are mentioned in the article:

The Kamlet-Taft dipolarity/polarizability parameters π* for various ionic liquids were determined using 4-tert-butyl-2-(dicyanomethylene)-5-[(4-N,N-diethylamino)-benzylidene]-Δ3-thiazoline and 5-(N,N-dimethylamino)-5′-nitro-2,2′-bithiophene as solvatochromic probes. In contrast to the established π*-probe N,N-diethylnitroaniline, the chromophores presented here show excellent agreement with polarity measurement using the chem. shift of ¹²⁹Xe. They do not suffer from addnl. bathochromic UV/vis shifts caused by hydrogen-bonding resulting in too high π*-values for some ionic liquids In combination with large sets of various ionic liquids, these new chromophores thereby allow for detailed anal. of the phys. significance of π* and the comparison to quantum-mech. methods. We find that π* correlates strongly with the ratio of molar refractivity to molar volume, and thus with the refractive index. This study involved multiple reactions and reactants, such as N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3Reference of 5137-55-3).

N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3) belongs to organic chlorides. Organic chlorides can cause corrosion in pipelines, valves and condensers, and cause catalyst poisoning. The hydrocarbon processing industry (HPI) and others are affected by damage caused by these substances.While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available. Alkyl chlorides readily undergo attack by nucleophiles.Reference of 5137-55-3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Growth, structural, and solid-state properties of a hybrid metal-organic crystal: tetramethylammonium cadmium nitrate was written by Bhuvaneswari, N.;Sivakumar, S.;Venkatachalam, K.;Siva, V.. And the article was included in Journal of Materials Science: Materials in Electronics in 2022.Computed Properties of C4H12ClN The following contents are mentioned in the article:

A new metal-organic single crystals of tetramethylammonium cadmium nitrate (TMACN) have been grown by solution growth method. The grown TMACN crystals have been characterized by single-crystal X-ray diffraction (SCXRD) and powder X-ray diffraction anal. Furthermore, TMACN crystals have been subjected to scanning electron microscope (SEM), Fourier transform infra-red, Fourier transform Raman, UV-Visible, and Vickers microhardness studies. The surface morphol. has been investigated by SEM anal. From UV-Visible anal., the grown crystals have been optically transparent from 200 to 900 nm. The mech. stability has been investigated by Vickers microhardness study. Time-dependent dielec. studies have been measured by LCR meter. The dielec. constant varies with increasing frequency observed using dielec. study. Photoluminescence spectral study give the information about the crystal which emits green emission. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0Computed Properties of C4H12ClN).

Tetramethylammonium chloride (cas: 75-57-0) belongs to organic chlorides. Organic chlorides are compounds containing a carbon-chlorine bond, which are widely used in the oil field as a wax dissolver. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Computed Properties of C4H12ClN

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

A new kind of H-acid monoazo-anthraquinone reactive dyes with surprising color was written by Shan, Bin;Tong, Xing;Xiong, Wei;Qiu, Wenzhu;Tang, Bingtao;Lu, Rongwen;Ma, Wei;Luo, Yi;Zhang, Shufen. And the article was included in Dyes and Pigments in 2015.Computed Properties of C9H6Cl2N4 The following contents are mentioned in the article:

A new kind of reactive dyes containing both monoazo and anthraquinone chromophores was obtained by using 1,4-bis((4-aminophenyl)amino)anthrancene- 9,10-dione as diazo component and 1-amino-8-naphthol-3,6-disulfonicacid (H-acid) derivatives as coupling components. The dyes were characterized by UV-Vis, IR, MS, ¹H NMR and ¹³C NMR. The maximum absorption wavelengths of the dyes were all about 590 nm, which indicated that they were a kind of blue dyes. ¹H NMR and ¹³C NMR results revealed that there were two kinds of tautomerisms in dye structure and a new conjugated system formed between the anthraquinone ring and the Ph azo linkage. D. functional theory (DFT) calculations also proved the formation of the new larger conjugated system from which the blue color was generated. The fixations of the dyes on cotton were over 88% and the light fastness reached 5 grade. This study involved multiple reactions and reactants, such as 4,6-Dichloro-N-phenyl-1,3,5-triazin-2-amine (cas: 2272-40-4Computed Properties of C9H6Cl2N4).

4,6-Dichloro-N-phenyl-1,3,5-triazin-2-amine (cas: 2272-40-4) belongs to organic chlorides. Organic chlorides are compounds containing a carbon-chlorine bond, which are widely used in the oil field as a wax dissolver. Alkyl chlorides readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.Computed Properties of C9H6Cl2N4

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Deep eutectic solvents. The new generation of green solvents in analytical chemistry was written by Santana-Mayor, Alvaro;Rodriguez-Ramos, Ruth;Herrera-Herrera, Antonio V.;Socas-Rodriguez, Barbara;Rodriguez-Delgado, Miguel Angel. And the article was included in TrAC, Trends in Analytical Chemistry in 2021.HPLC of Formula: 5137-55-3 The following contents are mentioned in the article:

The incessant effort to perform a more sustainable chem. has brought about the development of new materials that accomplish the principles of the green chem. In this context, deep eutectic solvents (DESs) have surged as one of the most promising alternatives to the use of toxic organic solvents. Their unique properties have led to a huge development of these materials and a sharp increase of their applications in the recent years in anal. chem. They have been applied in sample preparation and anal. techniques. The quantity of new information generated from studies associated with DESs is enormous and needs to be continuously revised. In this review, the most relevant aspects related to the application of DESs in the last five years (2016-2020) have been compiled and critically discussed in order to provide a global view about the advantages and limitations of these new materials in the area of anal. chem. This study involved multiple reactions and reactants, such as N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3HPLC of Formula: 5137-55-3).

N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.HPLC of Formula: 5137-55-3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics