Month: January 2023

Kinetic study of hydrolysis of benzoates. Part XXVI. Variation of the substituent effect with solvent in alkaline hydrolysis of substituted alkyl benzoates was written by Nummert, Vilve;Piirsalu, Mare;Koppel, Ilmar A.. And the article was included in Collection of Czechoslovak Chemical Communications in 2006.Computed Properties of C8H7ClO2 This article mentions the following:

The second-order rate constants k₂ (dm³ mol^-1 s^-1) for the alk. hydrolysis of substituted alkyl benzoates C₆H₅CO₂R were measured spectrophotometrically in aqueous 0.5 M Bu₄NBr at 50 and 25 °C (R = CH₃, CH₂Cl, CH₂CN, CH₂C≡CH, CH₂C₆H₅, CH₂CH₂Cl, CH₂CH₂OCH₃, CH₂CH₃) and in aqueous 5.3 M NaClO₄ at 25 °C (R = CH₃, CH₂Cl, CH₂CN, CH₂C≡CH). The dependence of the alkyl substituent effects on different solvent parameters was studied using the following equations:. Δ Log k = c₀ + c₁σ₁ + c₂E₅^B + c₃ΔE + c₄ΔY + c₅ΔP + c₆ΔEσ₁ + c₇ΔYσ₁ + c₈ΔPσ₁. Δ Log k = c₀ + c₁σ^* + c₂E_s^B + c₃ΔE + c₄ΔY + c₅ΔP + c₆ΔEσ^* + c₇ΔYσ^* + c₈ΔPσ^*. Δ Log k = log k^R – log k^CH3·σ₁ and σ^* are the Taft inductive and polar substituent constants E, Y and P are the solvent electrophilicity, polarity and polarizability parameters, resp. In the data treatment ΔE = E_S – E_H2O, ΔY = Y_S – Y_H2O, ΔP = P_S – P_H2O were used. The solvent electrophilicity, E, is the main factor responsible for changes in alkyl substituent effects with medium. When σ₁ constants were used, variation of the polar term of alkyl substituents with the solvent electrophilicity E is similar to that observed earlier for meta and para substituents, but twice less when σ^* constants were used. The steric term for alkyl substituents was approx. independent of the solvent parameters. In the experiment, the researchers used many compounds, for example, Chloromethyl benzoate (cas: 5335-05-7Computed Properties of C8H7ClO2).

Chloromethyl benzoate (cas: 5335-05-7) 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. The haloform reaction, using chlorine and sodium hydroxide, is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus.Computed Properties of C8H7ClO2

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

The chlorination of some N,N-dimethylanilines with 1,3,5-trichloro-1,3,5-triazine-2,4,6(1H,3H,5H)-trione (trichloroisocyanuric acid) was written by Rosevear, Judi;Wilshire, John F. K.. And the article was included in Australian Journal of Chemistry in 1980.Safety of 2-Chloro-N,N-dimethylaniline This article mentions the following:

The reaction of some representative N,N-dimethylanilines and of Fischer’s base (1,3,3-trimethyl-2-methyleneindoline) with trichloroisocyanuric acid in concentrated H₂SO₄ was investigated. In many cases mixtures of chlorinated products were obtained; these mixtures were examined both by gas-liquid chromatog. and by NMR. The reaction of PhNMe₂ with dichloroisocyanuric acid was also studied. Substitution tended to occur ortho to the dimethylamino group. This behavior therefore differs from that reported for the corresponding brominations involving dibromoisocyanuric acid, where meta substitution was observed In the experiment, the researchers used many compounds, for example, 2-Chloro-N,N-dimethylaniline (cas: 698-01-1Safety of 2-Chloro-N,N-dimethylaniline).

2-Chloro-N,N-dimethylaniline (cas: 698-01-1) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. The haloform reaction, using chlorine and sodium hydroxide, is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus.Safety of 2-Chloro-N,N-dimethylaniline

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

The closeness of fit of antibenzoate antibodies about haptens and the orientation of the haptens in combination was written by Pressman, David;Siegel, Malcolm;Hall, Luther A. R.. And the article was included in Journal of the American Chemical Society in 1954.Electric Literature of C7H4ClNO4 This article mentions the following:

The inhibitory action of chloro-substituted phenylazobenzoates on the specific precipitation of antibodies formed against benzoate ions yielded information about the closeness of fit about hapten of the previously uninvestigated portion of the antibody complementary region. With antibodies to the o-azobenzoate ion, the fit about the benzene ring was closest in the 3- and 4-positions and least close in the 6-position. With antibodies to m-benzoate, the fit was closest in the 4-position, least close in the 5-position, and intermediate in the 2- and 6-positions. For those cases where 2 orientations for the combination of hapten with antibody are possible, such as with the chlorobenzoates, the relative distribution was calculated For example, m-chlorobenzoate, which has been considered to combine with anti-m-azobenzoate antibodies with the Cl in the azospecific site of the antibody, is calculated to combine to the extent of 10% in the nonpreferred orientation. The following substituted benzoic acids (R = p-hydroxyphenylazo) were prepared, m.ps. are given: 3,2-Cl, R, 187-9°; 4,2-Cl, R, 245-6°; 5,2-Cl, R, 231-3°; 6,2-Cl, R, 194-5°; 2,3-Cl, R, 219-21°; 4,3-Cl, R, 268-71°; 5,3-Cl, R, 239-41°; 6,3-Cl, R, 244-6°; 2,4-Cl, R, 213-15°; o-R, 207.8-8.2°; m-R, 230-2°; p-R, 277-9° (decomposition). In the experiment, the researchers used many compounds, for example, 3-Chloro-5-nitrobenzoic acid (cas: 34662-36-7Electric Literature of C7H4ClNO4).

3-Chloro-5-nitrobenzoic acid (cas: 34662-36-7) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. 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.Electric Literature of C7H4ClNO4

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

Phytochemical profiling of the leaves of Brassica juncea L. using GC-MS was written by Sharma, A.;Kumar, V.;Kanwar, M. K.;Thukral, A. K.;Bhardwaj, R.. And the article was included in International Food Research Journal in 2017.Application In Synthesis of 1-Chlorooctadecane This article mentions the following:

Brassica juncea L. is a source of several phytochems. of economic importance. The aim of the present study was to identify active phytochems. from the leaves of 60 days old plants after extraction with different solvents. Number of phytochems. detected were 51 (chloroform), 48 (ethyl-acetate), 40 (methanol), 33 (petroleum ether), and 28 (n-hexane). The major compounds identified were benzenepropanoic acid, 3,5-bis(1,1-dimethylethyl)- 4-hydroxy-, Me ester (22.98%, in methanol), n-eicosane (26.69%, in Et acetate), n-pentacosane (50.0%, in chloroform) and n-tetratetracontane (42.47 and 49.19%, in petroleum ether and n-hexane resp.). In all of the extracts, it was observed that compounds which belonging to alkane group dominated the most, followed by carboxylic acids containing fatty acids. In the experiment, the researchers used many compounds, for example, 1-Chlorooctadecane (cas: 3386-33-2Application In Synthesis of 1-Chlorooctadecane).

1-Chlorooctadecane (cas: 3386-33-2) 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.Application In Synthesis of 1-Chlorooctadecane

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

Cyanation and cyanomethylation of trimethylammonium salts via electrochemical cleavage of C-N bonds was written by Kong, Xianqiang;Wang, Yuchang;Chen, Yiyi;Chen, Xiaohui;Lin, Long;Cao, Zhong-Yan. And the article was included in Organic Chemistry Frontiers in 2022.Electric Literature of C8H10ClN This article mentions the following:

A practical and mild electrochem. protocol for cyanation and cyanomethylation of trimethylammonium salts through a pathway involving C-N bond cleavage without the need for an external stoichiometric reducing agent or a sacrificial anode was developed. The reaction employed tosyl cyanide (TsCN) or azido allyl alc. as the cyanation or cyanomethylation reagent, resp. It showed high functional group compatibility and can be applied for the cyanation of natural product derivatives Preliminary mechanistic studies indicated the involvement of a radical addition pathway. In the experiment, the researchers used many compounds, for example, 2-Chloro-N,N-dimethylaniline (cas: 698-01-1Electric Literature of C8H10ClN).

2-Chloro-N,N-dimethylaniline (cas: 698-01-1) 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. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.Electric Literature of C8H10ClN

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

Synthesis and herbicidal activities of 2-[3-(2-substituted phenyl)-1H-pyrazol-1-yl]-4,6-dimethoxypyrimidine derivatives was written by Li, Yuanxiang;Lin, Long;Chen, Qiong. And the article was included in Youji Huaxue in 2011.SDS of cas: 697-73-4 This article mentions the following:

Twenty two novel 2-[3-(2-substitutedphenyl)-1H-pyrazol-1-yl]-4,6-dimethoxypyrimidine derivatives have been designed and synthesized using 1-(2-hydroxyphenyl)ethanone as starting material. All synthesized compounds were confirmed by ¹H NMR, MS techniques and elemental anal. The preliminary bioassay showed that some of them exhibited certain herbicidal activities. In the experiment, the researchers used many compounds, for example, 2-(Chloromethyl)-1,3-difluorobenzene (cas: 697-73-4SDS of cas: 697-73-4).

2-(Chloromethyl)-1,3-difluorobenzene (cas: 697-73-4) belongs to organic chlorides. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids. 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: 697-73-4

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

CON4EI: Development of testing strategies for hazard identification and labelling for serious eye damage and eye irritation of chemicals was written by Adriaens, E.;Verstraelen, S.;Alepee, N.;Kandarova, H.;Drzewiecka, A.;Gruszka, K.;Guest, R.;Willoughby, J. A. Sr.;Van Rompay, A. R.. And the article was included in Toxicology In Vitro in 2018.Electric Literature of C10H8Cl2FNO3 This article mentions the following:

Assessment of acute eye irritation potential is part of the international regulatory requirements for safety testing of chems. In the last decades, many efforts have been made in the search for alternative methods to replace the regulatory in vivo Draize rabbit eye test (OECD TG 405). Success in terms of complete replacement of the regulatory in vivo Draize rabbit eye test has not yet been achieved. The main objective of the CEFIC-LRI-AIMT6-VITO CON4EI (CONsortium for in vitro Eye Irritation testing strategy) project was to develop tiered testing strategies for serious eye damage and eye irritation assessment that can lead to complete replacement of OECD TG 405. A set of 80 reference chems. (e.g., balanced by important driver of classification and phys. state), was tested with seven test methods. Based on the results of this project, three different strategies were suggested. The authors have provided a standalone (EpiOcular ET-50), a two-tiered and three-tiered strategy, that can be used to distinguish between Cat 1 and Cat 2 chems. and chems. that do not require classification (No Cat). The two-tiered and three-tiered strategies use an RhCE test method (EpiOcular EIT or SkinEthic EIT) at the bottom (identification No Cat) in combination with the BCOP LLBO (two-tiered strategy) or BCOP OP-KIT and SMI (three-tiered strategy) at the top (identification Cat 1). For the authors’ proposed strategies, 71.1% – 82.9% Cat 1, 64.2% – 68.5% Cat 2 and â‰?0% No Cat chems. were correctly identified. Also, similar results were obtained for the Top-Down and Bottom-Up approach. In the experiment, the researchers used many compounds, for example, Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate (cas: 96568-04-6Electric Literature of C10H8Cl2FNO3).

Ethyl 3-(2,6-Dichloro-5-fluoro-3-pyridyl)-3-oxopropionate (cas: 96568-04-6) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Electric Literature of C10H8Cl2FNO3

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

Synthesis and SAR of 2-aryl pyrido[2,3-d]pyrimidines as potent mGlu5 receptor antagonists was written by Wendt, John A.;Deeter, Susan D.;Bove, Susan E.;Knauer, Christopher S.;Brooker, Rachel M.;Augelli-Szafran, Corinne E.;Schwarz, Roy D.;Kinsora, Jack J.;Kilgore, Kenneth S.. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2007.Application In Synthesis of 3-Cyanobenzoyl chloride This article mentions the following:

A novel series of potent 2-aryl pyrido[2,3-d]pyrimidine mGlu5 receptor antagonists I (R = Me, X = 2-methoxy, 3-cyano, 3,5-Cl₂, etc.; R = H, X = 3-cyano, 3-bromo, 3-methyl-5-fluoro, etc.) are described. The synthesis and pharmacol. activities of these analogs are discussed. In the experiment, the researchers used many compounds, for example, 3-Cyanobenzoyl chloride (cas: 1711-11-1Application In Synthesis of 3-Cyanobenzoyl chloride).

3-Cyanobenzoyl chloride (cas: 1711-11-1) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators.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.Application In Synthesis of 3-Cyanobenzoyl chloride

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

Effect of the green synthesized rGO and Mg/rGO nanocomposites on the phytochemical assay, toxicity, and metabolism of Mentha longifolia in vitro cultures was written by Jafarirad, Saeed;Kosari-Nasab, Morteza;Aminpour, Monireh;Rezaei, Zahra. And the article was included in Environmental Science and Pollution Research in 2022.Computed Properties of C18H37Cl This article mentions the following:

Reduced graphene oxide (rGO) and Mg/rGO nanocomposites (NCs) were prepared by an eco-friendly technique using Rosa canina fruit extract Physicochem. properties and cytotoxicity to Mentha longifolia in vitro cultures of these nanomaterials were examined by using XRD, FESEM, EDX, FT-IR, DLS/zeta potential, UV-Visible, and GC-MS techniques. The characterization techniques confirmed the synthesis of rGO and Mg/rGO NCs with particle sizes less than 20 nm (based on FESEM). In accordance to the biol. measurements, rGO showed in vitro cytotoxicity to M. longifolia shoot cultures. Mg/rGO NCs showed no significant difference in the growth parameters except for a decrease in the shoot number at the concentrations of 50 and 150 mg/L and a decrease in the length of the tallest root at the concentrations of 100 and 150 mg/L, however efficiently improved the photosynthetic pigment contents. The phytochem. assay depicted that the total content of volatile compounds was increased in the treated cultures with 25, 50, and 100 mg/L of rGO and Mg/rGO NCs in comparison to the control. Generally, the more oxygenated and hydrocarbon sesquiterpenes were observed in the cultures treated with 25 and 100 mg/L of rGO and 25 and 50 mg/L of Mg/rGO NCs. In the experiment, the researchers used many compounds, for example, 1-Chlorooctadecane (cas: 3386-33-2Computed Properties of C18H37Cl).

1-Chlorooctadecane (cas: 3386-33-2) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. 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.Computed Properties of C18H37Cl

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

Construction of a ratiometric electrochemical aptasensor based on graphdiyne-methylene blue and Fc-labeled hairpin for cyclic signal amplification detection of kanamycin was written by Gao, Xiaolin;Sun, Zhicong;Wang, Xiaoyang;Zhang, Wanqi;Wang, Yue;Han, Jie;Sun, Xia;Guo, Yemin;Li, Falan;Xu, Shicai. And the article was included in Sensors and Actuators, B: Chemical in 2022.Reference of 61-73-4 This article mentions the following:

Based on ferrocene (Fc)-labeled primers and graphdiyne-methylene blue (GDY-MB) nanocomposite, a ratiometric electrochem. aptasensor was prepared for high-precision detection of kanamycin (KAN). The Fc-labeled primer hybridized with the aptamer forms a rigid structure. When KAN was specifically bound to an aptamer, a primer with a self-complementary sequence was released to form a hairpin structure (HP), drawing the Fc close to the electrode surface, resulting in enhanced IFc. Exonuclease I (Exo I) was used to cleave the single-stranded aptamer and release the target, effectively increasing the cyclic amplification signal. The phosphorylation was carried out at the 3 end of the primers to prevent HP cleavage. The chitosan – antimony tin oxide (CS-ATO) and AuNPs were used to further modified the electrodes to double the signal amplification. Under the optimal exptl. conditions, the KAN concentration exhibited a strong linear relationship with IFc/IMB. The R2 (0.997) of the calibration curve was greater than the R2 (0.960) of the standard curve of KAN concentration and IFc, which indicates the robustness of the ratiometric electrochem. sensor. The limit of detection (LOD) was 6.044 nM. The aptasensor exhibits strong stability and specificity for successfully detection of KAN in real milk samples. In the experiment, the researchers used many compounds, for example, 3,7-Bis(dimethylamino)phenothiazin-5-ium chloride (cas: 61-73-4Reference of 61-73-4).

3,7-Bis(dimethylamino)phenothiazin-5-ium chloride (cas: 61-73-4) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. 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.Reference of 61-73-4

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