Category: chlorides-buliding-blocks

Morano, Cain published the artcileMultiple Isotopic Labels for Quantitative Mass Spectrometry, Safety of 3-Carboxy-N,N,N-trimethylpropan-1-aminium chloride, the publication is Analytical Chemistry (Washington, DC, United States) (2008), 80(23), 9298-9309, database is CAplus and MEDLINE.

Quant. mass spectrometry is often performed using isotopically labeled samples. Although the 4-trimethylammonium butyryl (TMAB) labels have many advantages over other isotopic tags, only two forms have previously been synthesized (i.e., a heavy form containing nine deuteriums and a light form without deuterium). In the present report, two addnl. forms containing three and six deuteriums have been synthesized and tested. These addnl. isotopic tags perform identically to the previously reported tags; peptides labeled with the new TMAB reagents coelute from reversed-phase HPLC columns with peptides labeled with the lighter and heavier TMAB reagents. Altogether, these four tags allow for multivariate anal. in a single liquid chromatog./mass spectrometry anal., with each isotopically tagged peptide differing in mass by 3 Da per tag incorporated. The synthetic scheme is described in simple terms so that a biochemist without specific training in organic chem. can perform the synthesis. The interpretation of tandem mass spectrometry data for the TMAB-labeled peptides is also described in more detail. The addnl. TMAB isotopic reagents described here, together with the addnl. description of the synthesis and anal., should allow these labels to be more widely used for proteomics and peptidomics analyses.

Analytical Chemistry (Washington, DC, United States) published new progress about 6249-56-5. 6249-56-5 belongs to chlorides-buliding-blocks, auxiliary class Phase Transfer Catalyst,Inhibitor,Natural product, name is 3-Carboxy-N,N,N-trimethylpropan-1-aminium chloride, and the molecular formula is C7H16ClNO2, Safety of 3-Carboxy-N,N,N-trimethylpropan-1-aminium chloride.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Zhang, Ming-Lu published the artcileSwitchable, Reagent-Controlled C(sp³)-H Selective Iodination and Acetoxylation of 8-Methylquinolines, Computed Properties of 209919-30-2, the publication is Journal of Organic Chemistry (2022), 87(9), 5730-5743, database is CAplus and MEDLINE.

An efficient Pd-catalyzed C(sp³)-H selective iodination of 8-methylquinolines I (R = H, Ph, 4-chlorophenyl; R¹ = H, Cl, Ph, etc.; R² = H, F, Cl, Br; R³ = H, Cl, Br, I) is reported herein for the first time. Because of the versatility of organic iodides, the method offers a facile access to various C8-substituted quinolines II. By slightly switching the reaction conditions, an efficient C(sp³)-H acetoxylation of 8-methylquinolines I has also been enabled. Both approaches feature mild reaction conditions, good tolerance of functional groups, and a broad substrate scope.

Journal of Organic Chemistry published new progress about 209919-30-2. 209919-30-2 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Benzene,Boronic Acids,Boronic acid and ester, name is 4-Chloro-2-methylphenylboronic acid, and the molecular formula is C7H6N2O2S, Computed Properties of 209919-30-2.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Jin, Ling published the artcileAdditives structure in electroreduction of oxalic acid, Application of N-Benzyl-N,N-dibutylbutan-1-aminium chloride, the publication is Huagong Xuebao (Chinese Edition) (2010), 61(S1), 86-90, database is CAplus.

In this paper, as the background of the preparation of glyoxylic acid by the electroreduction of oxalic acid on lead electrodes, the effects of additives structure on electrode reaction have been studied. The results show that the cation of the additives has the most influence on current efficiency and the reaction selectivity. Furthermore, cation radicle is more sym. or the longest alkyl chain is shorter, the current efficiency and the reaction selectivity are higher. The tetra-Et quaternary ammonium salt has the best active effect.

Huagong Xuebao (Chinese Edition) published new progress about 23616-79-7. 23616-79-7 belongs to chlorides-buliding-blocks, auxiliary class Phase Transfer Catalyst, name is N-Benzyl-N,N-dibutylbutan-1-aminium chloride, and the molecular formula is C19H34ClN, Application of N-Benzyl-N,N-dibutylbutan-1-aminium chloride.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Yang, Ke published the artcileDNA photocleavage and binding modes of methylene violet 3RAX and its derivatives: Effect of functional groups, Application In Synthesis of 4569-86-2, the publication is Australian Journal of Chemistry (2017), 70(7), 830-836, database is CAplus.

With 4′-amino-N,N-diethylaniline and aniline as starting materials, methylene violet 3RAX 1 and its derivatives 2-5 were synthesized. The 5 compounds were characterized by IR, UV-visible, and ¹H NMR spectroscopy and mass spectrometry. The binding mode between the synthesized compounds and DNA were investigated. The results showed that both compounds 1 and 5 bound to DNA by an intercalative mode, while compounds 2-4 interacted with DNA through a mixed binding mode involving groove binding and electrostatic interactions. The photocleavage ability of the 5 compounds to DNA were calculated to be 38, 40, 30, 20, and 13%, resp., when their concentration was adjusted to 400 μM. The singlet oxygen production of compounds measured by the 1,3-diphenylisobenzofuran method was consistent with the trend of DNA photocleavage ability. The DNA studies suggested that the binding mode between methylene violet 3RAX and DNA, the ability of methylene violet 3RAX to generate singlet oxygen, and the DNA photocleavage activity could be adjusted through modification of the amino group on methylene violet 3RAX.

Australian Journal of Chemistry published new progress about 4569-86-2. 4569-86-2 belongs to chlorides-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Benzene, name is 3-Amino-7-(diethylamino)-5-phenylphenazin-5-ium chloride, and the molecular formula is C9H5FO2, Application In Synthesis of 4569-86-2.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Chen, Jianyang published the artcileFacile one-pot synthesis of diarylacetylenes from arylaldehydes via an addition-double elimination process, Safety of 3-Chlorobenzylchloride, the publication is Organic & Biomolecular Chemistry (2021), 19(21), 4701-4705, database is CAplus and MEDLINE.

A practical one-pot protocol has been developed to synthesize diarylacetylenes ArCCAr¹ (Ar = Ph, naphthalen-1-yl, furan-2-yl, etc.; Ar¹ = Ph, 4-chlorophenyl, naphthalen-2-yl, etc.) from arylaldehydes ArCHO by treatment with 1-(arylmethyl)benzotriazoles I and LiN(SiMe₃)₂. The reaction proceeded through imine formation, Mannich-type addition and double elimination to deliver products in up to 99% yields with broad substrate scope. In addition, gram-scale synthesis of diarylacetylene (Ar = 4-bromophenyl, Ar¹ = Ph) has been demonstrated.

Organic & Biomolecular Chemistry published new progress about 620-20-2. 620-20-2 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Benzyl chloride,Benzene, name is 3-Chlorobenzylchloride, and the molecular formula is C7H6Cl2, Safety of 3-Chlorobenzylchloride.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Sun, Weimei published the artcileTargeting enteropeptidase with reversible covalent inhibitors to achieve metabolic benefits, Recommanded Product: 3-Chloro-4-hydroxyphenylacetic acid, the publication is Journal of Pharmacology and Experimental Therapeutics (2020), 375(3), 510-521, database is CAplus and MEDLINE.

Inhibition of the serine protease enteropeptidase (EP) opens a new avenue to the discovery of chemotherapeutics for the treatment of metabolic diseases. Camostat has been used clin. for treating chronic pancreatitis in Japan; however, the mechanistic basis of the observed clin. efficacy has not been fully elucidated. We demonstrate that camostat is a potent reversible covalent inhibitor of EP, with an inhibition potency (kinact/KI) of 1.5 x 104 M-1s-1. High-resolution liquid chromatog.-mass spectrometry (LC-MS) showed addition of 161.6 Da to EP after the reaction with camostat, consistent with insertion of the carboxyphenylguanidine moiety of camostat. Covalent inhibition of EP by camostat is reversible, with an enzyme reactivation half-life of 14.3 h. Formation of a covalent adduct was further supported by a crystal structure resolved to 2.19 Å, showing modification of the catalytic serine of EP by a close analog of camostat, leading to formation of the carboxyphenylguanidine acyl enzyme identical to that expected for the reaction with camostat. Of particular note, minor structural modifications of camostat led to changes in the mechanism of inhibition. We observed from other studies that sustained inhibition of EP is required to effect a reduction in cumulative food intake and body weight, with concomitant improved blood glucose levels in obese and diabetic leptin-deficient mice. Thus, the structure-activity relationship needs to be driven by not only the inhibition potency but also the mechanistic and kinetic characterization. Our findings support EP as a target for the treatment of metabolic diseases and demonstrate that reversible covalent EP inhibitors show clin. relevant efficacy.

Journal of Pharmacology and Experimental Therapeutics published new progress about 33697-81-3. 33697-81-3 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Carboxylic acid,Benzene,Phenol, name is 3-Chloro-4-hydroxyphenylacetic acid, and the molecular formula is C12H10F2Si, Recommanded Product: 3-Chloro-4-hydroxyphenylacetic acid.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Guo, Rui-Ting published the artcileRhodium-Catalyzed ortho-Selective Carbene C-H Insertion of Unprotected Phenols Directed by a Transient Oxonium Ylide Intermediate, Computed Properties of 23616-79-7, the publication is Organic Letters (2020), 22(3), 908-913, database is CAplus and MEDLINE.

Ortho-Selective carbene C-H insertion of unprotected phenols is achieved with di-Me diazomalonate under the catalysis of [Rh(COD)Cl]₂. After the C-H insertion, subsequent cyclization and electrophilic addition of another carbene mol. affords tris-carboxylate-substituted 2-benzofuranones as the final reaction products. The enantioselective variant has been developed with the use of chiral diene ligands. Mechanistic experiments indicate that a transient oxonium ylide directing group might be responsible for the regiocontrol at the C-H activation step.

Organic Letters published new progress about 23616-79-7. 23616-79-7 belongs to chlorides-buliding-blocks, auxiliary class Phase Transfer Catalyst, name is N-Benzyl-N,N-dibutylbutan-1-aminium chloride, and the molecular formula is C19H34ClN, Computed Properties of 23616-79-7.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Zhang, Wei published the artcileA hemicyanine fluorescent reactive cationic dye: synthesis and applications on wool fabrics, Name: 2,3-Dibromopropionylchloride, the publication is Coloration Technology (2015), 131(4), 316-321, database is CAplus.

A novel hemicyanine fluorescent reactive cationic dye was synthesized by the reaction between the free amino group of a hemicyanine fluorescent dye and 2,3-dibromopropionyl chloride. The dye was characterised by proton NMR spectroscopy, high-resolution mass spectrometry, UV-visible absorption spectrometry, and single-photon fluorescence spectrometry. The prepared dye was applied to wool fabrics to give fluorescent orange shades. The color fastness of the dyed wool fabrics was tested. Results show that dyed fabrics using the novel hemicyanine fluorescent reactive cationic dye could be used as fluorescent clothing.

Coloration Technology published new progress about 18791-02-1. 18791-02-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is 2,3-Dibromopropionylchloride, and the molecular formula is C13H9ClN2O4, Name: 2,3-Dibromopropionylchloride.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Wang, Dan published the artcileSupport vector machine and KStar models predict the o-dealkylation reaction mediated by cytochrome P450, Computed Properties of 33697-81-3, the publication is Wuli Huaxue Xuebao (2011), 27(2), 343-351, database is CAplus.

Nested prediction model was constructed based on support vector machines (SVM) and the KStar method. The models consisted of a mol. shape discriminative model for metabolites, which was used to predict the o-dealkylation reaction mediated by cytochrome P 450, in addition to the metabolic site discriminative model, which was used to judge C-O bond breaking in mols. 1280 Mol. descriptors including topol. descriptors, 2D autocorrelation descriptors, and geometric descriptors were calculated and to characterize the physicochem. properties of 272 mols. A mol. shape discriminative model, represented by the classification models, was constructed by machine learning methods including SVM, decision tree, Bayesian network, and k nearest neighbors method. The results showed that the SVM model was superior to the other methods. Twenty-six quantum chem. features including charge-related, valency-related, and energy-related features were calculated for the 538 metabolism sites for the o-dealkylation reaction in the metabolic site discriminative model. Machine learning methods including decision tree, Bayesian network, KStar, and the artificial neural network method were also used to develop classification models. It showed that the KStar model with its prediction accuracy, sensitivity, and specificity of more than 90% outperformed the other classification models. Fifteen traditional Chinese medicine medicinal mols. were used to validate the model. The results showed that the nested models had certain accuracy and could contribute to the prediction of metabolites from traditional Chinese medicines.

Wuli Huaxue Xuebao published new progress about 33697-81-3. 33697-81-3 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Carboxylic acid,Benzene,Phenol, name is 3-Chloro-4-hydroxyphenylacetic acid, and the molecular formula is C6H3ClFNO2, Computed Properties of 33697-81-3.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Deng, Yu published the artcileRecovery of rare earths in different media with novel dicarboxylate based ionic liquid and application to recycle SmCo magnets, Recommanded Product: N-Benzyl-N,N-dibutylbutan-1-aminium chloride, the publication is Hydrometallurgy (2022), 105844, database is CAplus.

Recovery and separation of rare earth elements was highly crucial but difficult. In this study, a well-designed new ionic liquid named as benzyltributylammonium decanedioate ([N_444Bn]₂[SA]) was developed to extract rare earths and sep. Sm(III) from the spent SmCo magnets in acetate medium for the first time. To exhibit the superiority of acetate medium, the extraction of Nd(III) and La(III) in three different media were comparatively investigated under different conditions, including equilibrium time, initial pH of aqueous solution, rare earth concentration, extractant concentration, salting-out agent concentration and extraction temperature The results revealed that the better extractabilities of La(III) were observed in acetate medium rather than those in chloride medium (i.e., 97.6% vs. 78.6%), which may be attributed to the low-hydrated nature of acetate ions. Importantly, the back-extraction experiments indicated that 91.4% Nd(III) can be stripped from [N_444Bn]₂[SA] by using 1.5 mol/L HOAc, revealing the outstanding reusability of ionic liquid in the industrial separation-stripping cycles. Furthermore, the ion association mechanism was proposed to describe the extraction behavior and confirmed by the slope anal. and FT-IR characterizations in three media. In terms of the SmCoCu mixture separation, the maximal separation factor of Sm(III)/Co(II) was calculated as 3078 in simulated solution Impressively, the recovery of Sm(III) from the actual SmCo magnets by our dicarboxylate-type ionic liquid was also successfully achieved with a recycling rate of 96.8% and a Sm(III)/Co(II) selectivity of 148, which exhibited the potential application in the separation of Sm(III) from the spent SmCo magnets.

Hydrometallurgy published new progress about 23616-79-7. 23616-79-7 belongs to chlorides-buliding-blocks, auxiliary class Phase Transfer Catalyst, name is N-Benzyl-N,N-dibutylbutan-1-aminium chloride, and the molecular formula is C19H34ClN, Recommanded Product: N-Benzyl-N,N-dibutylbutan-1-aminium chloride.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics