Chlorides-buliding-blocks

da Rocha, Caroline O. published the artcileMethylene violet 3 RAX dye as a new reagent for the determination of nitrite in cured meats and vegetables, SDS of cas: 4569-86-2, the publication is Journal of the Brazilian Chemical Society (2017), 28(8), 1528-1533, database is CAplus.

In this contribution we propose, for the first time, the use of Methylene Violet 3 RAX dye for the detection and determination of nitrite in cured meats and vegetables. Quantification is based on the decrease in absorbance of the dye, which is proportional to the nitrite concentration The proposed method presents linear response (r > 0.99) in the range from 1.8 to 9 μmol L-1 of nitrite, with a limit of detection of 0.14 μmol L-1. Satisfactory accuracy with the official Association of Official Agricultural Chemists (AOAC) method was achieved, and the method was successfully applied to a wide range of cured meats and vegetables. The proposed method offers similar or superior performance to other optical methods used for the determination of nitrite in different matrixes, with advantage in terms of reduction of chem. waste for each anal., by minimizing amounts of reagents and products.

Journal of the Brazilian Chemical Society 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 C22H23ClN4, SDS of cas: 4569-86-2.

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

Hancock, James R. published the artcileRetention index monitoring of compounds of chemical defense interest using thermal desorption gas chromatography, Synthetic Route of 1002-41-1, the publication is Journal of Chromatography (1991), 538(2), 249-57, database is CAplus.

Retention index monitoring using thermal desorption gas chromatog. anal. was developed as method for the verification of compounds of chem. defense interest in environmental matrixes. Gas chromatog. retention indexes were determined by loading solid adsorbent packed sampling tubes initially with the target compounds and subsequently with a series of n-alkane probes. The resulting chromatog. performance and gas chromatog. retention indexes were independent of the tube loading method. A data base of gas chromatog. retention indexes for chem. warfare agents and simulants was compiled and, in conjunction with simultaneous flame ionization and flame photometric detection, applied to the identification of tri-Et phosphate, tri-Bu phosphate, and di-Et malonate in water and soil samples.

Journal of Chromatography published new progress about 1002-41-1. 1002-41-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is 1,2-Bis(2-chloroethyl)disulfane, and the molecular formula is C4H8Cl2S2, Synthetic Route of 1002-41-1.

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

Florvall, Lennart published the artcilePotential neuroleptic agents. 2. Synthesis and dopamine blocking activity of some new 2,6-dimethoxybenzamide derivatives, COA of Formula: C9H9ClO4, the publication is Acta Pharmaceutica Suecica (1983), 20(5), 365-70, database is CAplus and MEDLINE.

A series of 14 novel 2,6-dimethoxybenzamides related to the parent drug (S)-(-)-3-bromo-2,6-dimethoxy-[(1-ethyl-2-pyrrolidinyl)methyl]benzamide, were synthesized by chlorination and amination of the corresponding dimethoxybenzaldehydes, and were evaluated for the ability to block the apomorphine syndrome in rats. Four of the compounds, dimethoxybenzamides I (R = R¹ = Cl, Br; R = Br, R¹ = H) and II, were potent but the activity was lower than that of the parent compound None of the new amides showed any notable separation between apomorphine-induced hyperactivity and stereotypes.

Acta Pharmaceutica Suecica published new progress about 36335-47-4. 36335-47-4 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Carboxylic acid,Benzene,Ether, name is 3-Chloro-2,6-dimethoxybenzoic acid, and the molecular formula is C9H9ClO4, COA of Formula: C9H9ClO4.

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

Villieras, Jean published the artcileα-Chloroenolates; VI. Diethyl 1-chloro-1-lithio-2-oxoalkanephosphonates; synthesis of α-chloro-α,β-unsaturated ketones, Category: chlorides-buliding-blocks, the publication is Synthesis (1978), 29-31, database is CAplus.

1-Chloro-2-oxoalkanephosphonates RCOCHClP(O)(OEt)₂ (I; R = Pr, iso-Pr, tert-Bu) were prepared in 60-85% yield by treating LiCCl₂P(O)(OEt)₂ with BuLi at -90° followed by acylation with RCOCl at -125 and hydrolysis. In situ reaction of I α-Li derivatives with aldehydes R¹CHO (R¹ = Ph, 2- or 4-ClC₆H₄, Bu) gave α,β-unsaturated ketones (E)-R¹CH:CClCOR.

Synthesis published new progress about 866-23-9. 866-23-9 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Diethyltrichloromethylphosphonate, and the molecular formula is C7H8BNO4, Category: chlorides-buliding-blocks.

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

Villieras, Jean published the artcileα-Haloenolates; VII. Diethyl 1-chloro-1-ethoxycarbonyl-1-lithiomethanephosphonate; a convenient one-step preparation of α-chloro-α,β-unsaturated esters from diethyl trichloromethanephosphonate, Quality Control of 866-23-9, the publication is Synthesis (1978), 31-3, database is CAplus.

α,β-Unsaturated esters (E)- and (Z)-RCH:CClCO₂Et (R = n-C₉H₁₉, BuCHEt, 3-cyclohexenyl, Cl₃C, Ph, 2-ClC₆H₄, 4-MeOC₆H₄) and I (n = 0, 1) were prepared by treating Cl₃CP(O)(OEt)₂ with BuLi at -90°, ClCO₂Et at -125°, and RCHO or the cycloalkanone at -60 to +20°. Hydrolysis of the intermediate Li enolate formed in the above reactions gave EtO₂CCHClP(O)(OEt)₂.

Synthesis published new progress about 866-23-9. 866-23-9 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Diethyltrichloromethylphosphonate, and the molecular formula is C6H4ClNO2, Quality Control of 866-23-9.

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

Villieras, J. published the artcileSimple route from aldehydes to alkynes and 1-chloro-1-alkynes, SDS of cas: 866-23-9, the publication is Synthesis (1975), 458-61, database is CAplus.

Reaction of RCHO (R = e.g., Et2CH, cyclohexyl, MeCH:CH, PhCH:CH, substituted phenyl) with LiCCl2P(O)(OEt)2 in THF-ether gave 85-90% RCH:CCl2 which 1) with LiNEt2 in THF-ether gave RCCCl and 2) with EtLi or BuLi in THF-ether at -10 to -70° gave RCCLi which was hydrolyzed with aqueous H2SO4 to RCCH or alkylated with chlorodimethyl ether to give methoxymethyl derivatives (e.g., 1-cyclohexyl-3-methoxy-1-propyne).

Synthesis published new progress about 866-23-9. 866-23-9 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Diethyltrichloromethylphosphonate, and the molecular formula is C18H35NO, SDS of cas: 866-23-9.

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

Chantler, Thomas published the artcileProximity effects in the electron impact mass spectra of 2-substituted benzazoles, SDS of cas: 51656-68-9, the publication is International Journal of Mass Spectrometry (2004), 236(1-3), 65-80, database is CAplus.

The 70 eV electron impact mass spectra of a wide range of 2-substituted benzazoles are reported and discussed. Particular attention is paid to the mechanistic significance and anal. utility of [M-H]⁺ and [M-X]⁺ signals in the spectra of benzazoles in which the 2-substituent contains a terminal aryl group with one or more substituents, X. Loss of H^• or X^• occurs preferentially from an ortho-position from ionized 2-benzylbenzimidazoles, 2-phenethylbenzimidazoles, 2-styrylbenzimidazoles, 2-styrylbenzoxazoles and 2-styrylbenzothiazoles. In the three styrylbenzazole series, the [M-H]⁺ and/or [M-X]⁺ signals dominate the spectra. This unusually facile loss of H^• or X^• may be attributed to a proximity effect, in which cyclization of the ionized mol. is followed by elimination of an ortho-substituent to give an exceptionally stable polycyclic ion. Formation of a new five- or six-membered ring by the proximity effect occurs rapidly; cyclization to a seven-membered ring takes place rather less readily; but formation of a ring with only four atoms or more than seven atoms is not observed to a significant extent. The proximity effect competes effectively with loss of a Me radical by simple cleavage of an Et, iso-Pr and even a t-Bu group in the pendant aromatic ring of ionized 2-(4-alkylstyryl)benzazoles.

International Journal of Mass Spectrometry published new progress about 51656-68-9. 51656-68-9 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Carboxylic acid,Benzene, name is 3-(2,6-Dichlorophenyl)propanoic acid, and the molecular formula is C9H8Cl2O2, SDS of cas: 51656-68-9.

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

Golubeva, E. N. published the artcileInfluence of the nuclearity of copper(II) chloride complexes on their activity in catalytic C-Cl bond metathesis, Formula: C19H34ClN, the publication is Kinetics and Catalysis (2008), 49(5), 737-742, database is CAplus.

Catalytic systems containing mainly mononuclear (CuCl₄^2-) or dinuclear (Cu₂Cl₆^2-) tributylbenzylammonium chlorocuprates are prepared by adsorption on silica surfaces of different structures (Aerosil and Silokhrom). Using ESR, XANES, and electronic spectroscopy, the CuCl₄^2- ions are shown to be reduced rapidly under conditions of C-Cl bond metathesis, whereas the dinuclear chlorocuprates are relatively stable. A correlation between the number of copper ions in the chlorocuprate anion and its catalytic activity is established: the mononuclear complexes are several times more active than their dinuclear counterparts.

Kinetics and Catalysis 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, Formula: C19H34ClN.

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

Ciordia, Myriam published the artcileApplication of Free Energy Perturbation for the Design of BACE1 Inhibitors, Name: (3-Chloro-5-cyanophenyl)boronic acid, the publication is Journal of Chemical Information and Modeling (2016), 56(9), 1856-1871, database is CAplus and MEDLINE.

Novel spiroaminodihydropyrroles probing for optimized interactions at the P3 pocket of β-secretase 1 (BACE1) were designed with the use of free energy perturbation (FEP) calculations The resulting mols. showed pIC₅₀ potencies in enzymic BACE1 inhibition assays ranging from approx. 5 to 7. Good correlation was observed between the predicted activity from the FEP calculations and exptl. activity. Simulations run with a default 5 ns approach delivered a mean unsigned error (MUE) between prediction and experiment of 0.58 and 0.91 kcal/mol for retrospective and prospective applications, resp. With longer simulations of 10 and 20 ns, the MUE was in both cases 0.57 kcal/mol for the retrospective application, and 0.69 and 0.59 kcal/mol for the prospective application. Other considerations that impact the quality of the calculations are discussed. This work provides an example of the value of FEP as a computational tool for drug discovery.

Journal of Chemical Information and Modeling published new progress about 915763-60-9. 915763-60-9 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Nitrile,Boronic acid and ester,Benzene,Boronic Acids,Boronic acid and ester, name is (3-Chloro-5-cyanophenyl)boronic acid, and the molecular formula is C7H5BClNO2, Name: (3-Chloro-5-cyanophenyl)boronic acid.

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

Wang, Fuxiang published the artcileSynthesis of clozapine, Related Products of chlorides-buliding-blocks, the publication is Zhongguo Yiyao Gongye Zazhi (2013), 44(10), 969-971, database is CAplus.

Compounds 2,5-dichloronitrobenzene and anthranilic acid were reacted in the presence of potassium carbonate with DMF as solvent to produce 2-(4-chloro-2-nitroanilino)benzoic acid, which was reduced to 2-(2-amino-4-chloroanilino)benzoic acid (5) by hydrazine hydrate and FeCl₃· 6H₂O. Catalyzed by polyphosphoric acid in xylene, compound 5 was cyclized into 8-chloro-5,10-dihydro-11H-dibenzo[b,e][1,4]diazepin-11-one, which was coupled with N-methylpiperazine in the presence of titanium tetrachloride to give clozapine. The overall yield was 43%, based on 2,5-dichloronitrobenzene.

Zhongguo Yiyao Gongye Zazhi published new progress about 60091-87-4. 60091-87-4 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Nitro Compound,Carboxylic acid,Amine,Benzene, name is 2-((4-Chloro-2-nitrophenyl)amino)benzoic acid, and the molecular formula is C24H20Ge, Related Products of chlorides-buliding-blocks.

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