Category: chlorides-buliding-blocks

Huang, Liang-chen published the artcileAroma finishing of silk fabric grafted with α-bromoacrylamidoethyl cyclodextrin, Quality Control of 18791-02-1, the publication is Yinran (2009), 35(17), 5-9, database is CAplus.

α-Bromoacrylamidoethyl cyclodextrin (β-CD-2-EDBA) was prepared with β-cyclodextrin, p-toluenesulfonyl chloride and 2,3-dibromo-propionyl chloride. Aroma finishing of silk fabric grafted with 8-CD-2-EDBA was carried out. Optimum grafting process was pH value 9, grafting agent 16% (owf), sodium sulfate 8 g/L, liquor ratio 1:50, and treating at 90°C for 40 min. Grafting ratio of treated silk fabric was high, and fragrance storage and fragrance retention time enhanced significantly. Scanning electron microscope picture proved that B-CD-2-EDBA was successfully grafted onto silk surface. Grafting ratio was tested with phenolphthalein spectral probe method and gravimetric method sep., it was found that the former had higher grafting ratio, while the latter was more accurate.

Yinran 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 C3H3Br2ClO, Quality Control of 18791-02-1.

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

Huang, Liang-chen published the artcileThe synthesis of novel finishing agent mono-(2-(2,3-dibromopropionyl)ethylenediamino-2-deoxy)-β-cyclodextrin, SDS of cas: 18791-02-1, the publication is Donghua Daxue Xuebao, Ziran Kexueban (2010), 36(3), 237-243, database is CAplus.

Cyclodextrins can be grafted onto silk in fragrance finishing. Mono-(2-O-tosyl)-β-cyclodextrin (β-CD-2-OTs) was produced under a chem. reaction between β-cyclodextrin and TsCl with a mole ratio of 1:6 in alk. aqueous solution 2-ethylenediamio-β-cyclodextrin (β-CD-2-E) was synthesized under the reaction between β-CD-2-OTs and ethylenediamine at the temperature around 60 °C. Mono-(2-(2,3-dibromopropionyl)ethylenediamino-2-deoxy)-β-cyclodextrin was synthesized through the reaction between β-CD-2-E and 2,3-dibromopropionyl chloride. The synthesis process was proved to be successful through the anal. of FT-IR spectra and ¹H-NMR spectrum. The novel finishing agent was proved to graft onto silk successfully through the SEM pictures.

Donghua Daxue Xuebao, Ziran Kexueban 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 C3H3Br2ClO, SDS of cas: 18791-02-1.

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

Qian, Hui published the artcileOrganocatalytic Enantio- and Diastereoselective Synthesis of 1,2-Dihydronaphthalenes from Isobenzopyrylium Ions, Quality Control of 7080-50-4, the publication is Journal of the American Chemical Society (2015), 137(2), 560-563, database is CAplus and MEDLINE.

A highly efficient asym. synthesis of dihydronaphthalenes I [R¹ = H, 7-Me, 6-F, etc; R² = Ph, 4-Me-C₆H₄, 4-OMe-C₆H₄, etc; Ar = Ph, 4-OMe-C₆H₄, 4-Me-C₆H₄, etc.] is disclosed. The process represents a new addition to the limited asym. reactions of isobenzopyryliums, a family of versatile 10π-electron aromatic species. Excellent asym. induction is achieved for the first time without an anchoring group in the 4-position or a metal catalyst, both of which were required previously in these reactions. The success is attributed to the unusual chiral counteranion (meanwhile also the nucleophile) generated in situ from the chiral phosphate and the boronic acid as well as the leaving group. Preliminary control experiments provided important insight into the reaction mechanism.

Journal of the American Chemical Society published new progress about 7080-50-4. 7080-50-4 belongs to chlorides-buliding-blocks, auxiliary class Halogenation Reagent,Inhibitor, name is Sodium chloro(tosyl)amide trihydrate, and the molecular formula is C7H13ClNNaO5S, Quality Control of 7080-50-4.

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

Liu, Taoping published the artcileGeneral and highly efficient fluorinated-N-heterocyclic carbene-based catalysts for the palladium-catalyzed Suzuki-Miyaura reaction, Recommanded Product: 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, the publication is Tetrahedron (2012), 68(32), 6535-6547, database is CAplus.

A general and highly efficient trifluoromethylated-N-heterocyclic carbene (NHC)-based catalyst (I) for the palladium-catalyzed Suzuki-Miyaura reaction was reported. In the presence of the catalyst, reactions of non-activated aryl chlorides and triflates with aryl boronic acids occurred at room temperature with good to excellent yields (63-98%). In addition, catalysts generated from a combination of Pd(OAc)₂/imidazolium salt I is not only effective for the coupling of heteroaryl boronic acid with aryl halides and heteroaryl halides, but also efficient for coupling of other heteroaryl halides and heteroaryl boronic acids. Finally, the catalyst is highly effective for Suzuki-Miyaura reaction of aryl bromides and chlorides with 0.01-0.1 mol % loading if the temperature was raised at refluxed THF/H₂O.

Tetrahedron published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C15H14Cl2S2, Recommanded Product: 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene.

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

Liu, Qian published the artcileMetal-free oxidative coupling of alkyl chlorides with thiols: An efficient access to sulfoxides, Computed Properties of 620-20-2, the publication is Tetrahedron Letters (2020), 61(7), 151492, database is CAplus.

An efficient and step-economical access to sulfoxides from thiols and alkyl halides in the presence of I₂O₅ and DBU via direct oxidative coupling was described. It is the first case that combined Williamson sulfide synthesis and subsequent sulfide oxidation into one step manipulation for sulfoxides preparation This protocol features wide substrate scope, mild and metal-free conditons, the use of naturally abundant starting materials and avoidance of over-oxidation

Tetrahedron Letters 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, Computed Properties of 620-20-2.

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

Li, Huangong published the artcileTargeted Synthesis of Anthranilic Diamides Insecticides Containing Trifluoroethoxyl Phenylpyrazole, Name: 1-(2-Chloro-5-(trifluoromethyl)phenyl)hydrazine, the publication is Chemical Research in Chinese Universities (2021), 37(3), 655-661, database is CAplus.

A series of novel anthranilic diamides analogs I [R = 4-F, 5-F, 5-Cl, 5-Br, 4-F₃C; R¹ = Me, Et, i-Pr, etc.] containing trifluoroethoxyl pyrazole moiety was designed and synthesized and their insecticidal bioactivities against Mythimna separata (Walker, M. separata) and Plutellaxylostella (P. xylostella) were evaluated. The structures of the title compounds I were confirmed by ¹H NMR, ¹³C NMR and HRMS. Preliminary insecticidal activities showed that some of the title compounds possessed good to excellent bioactivities towards M. separata and P. xylostella. Compounds I [R = 5-F, R¹ = i-Pr; R = 4-F, R¹ = F₃CH₂C] exhibited 100% mortality rate against M.sep. at 0.2mg/L. For the P. xylostella, the synthesized compoundsI [R = 5-F, R¹ = i-Pr, cyclopropyl; R = 5-F₃C, 5-Br, R¹ = Me; R = 5-Cl, R¹ = HF₂CH₂C] showed 70%, 80%, 75%, 65% and 60% insecticidal activities at 1×10^-6 mg/L, resp., higher than that of chlorantraniliprole(0). Based on excellent insecticidal activities, the mode of the action was tested by the calcium-imaging technique, the results of which demonstrated that the novel compounds shared the same target with chlorantraniliprole. The binding pose of the most active compound I [R = 4-F, R¹ = F₃CH₂C] in RyRs of P. xylostella was predicted by mol. docking, which showed that compound I [R = 4-F, R¹ = F₃CH₂C] interacted with the residues Glu140(A) and His147(A) via hydrogen bond.

Chemical Research in Chinese Universities published new progress about 1869-22-3. 1869-22-3 belongs to chlorides-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Chloride,Hydrazine,Amine,Benzene, name is 1-(2-Chloro-5-(trifluoromethyl)phenyl)hydrazine, and the molecular formula is C7H6ClF3N2, Name: 1-(2-Chloro-5-(trifluoromethyl)phenyl)hydrazine.

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

Liu, Ya published the artcileTargeted reclaiming cationic dyes from dyeing wastewater with a dithiocarbamate-functionalized material through selective adsorption and efficient desorption, HPLC of Formula: 4569-86-2, the publication is Journal of Colloid and Interface Science (2020), 766-777, database is CAplus and MEDLINE.

In this work, we applied a novel dithiocarbamate-grafted star-like polymer for efficient reclamation of cationic dyes. This material is highly selective towards cationic dyes and almost completely rejective to anionic dyes. The adsorption kinetics, isotherms, and thermodn. were systematically investigated to analyze the adsorption behavior of cationic dyes onto the material. As compared with other reported adsorbents, this cheap and facilely-prepared material has exceptional adsorption capacities for industrial cationic dyes, e.g., methylene blue (MB, 2624 mg/g), crystal violet (CV, 2553 mg/g), basic fuchsin (BF, 1729 mg/g), and methylene violet 3RAX (MV, 1239 mg/g), being 5-11 times of that reported in literatures. Based on the effects of pH and ionic strength on adsorption, competitive adsorption of the cationic dyes, and FTIR characterization, mechanisms for the adsorption and desorption of cationic dyes were proposed. The adsorbed dyes can be recovered over 95% just by immersing into diluted HCl solution (0.01 M) for 10 min, thus avoiding organic solvent extraction Over 98% of the adsorption capacity was maintained during consecutive reclamation operation. Due to the high selectivity, high adsorption capacity and the ease of efficient regeneration, this material is potentially applicable for targeted reclamation of cationic dyes from dyeing wastewater.

Journal of Colloid and Interface Science 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, HPLC of Formula: 4569-86-2.

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

Sun, Guo-Quan published the artcileNickel-catalyzed electrochemical carboxylation of unactivated aryl and alkyl halides with CO₂, Application In Synthesis of 637-07-0, the publication is Nature Communications (2021), 12(1), 7086, database is CAplus and MEDLINE.

A general and practical electro-reductive Ni-catalytic system, realizing the electrocatalytic carboxylation of unactivated aryl chlorides and alkyl bromides with CO₂ were reported. A variety of unactivated aryl bromides, iodides and sulfonates can also undergo such a reaction smoothly. Notably, realized the catalytic electrochem. carboxylation of aryl (pseudo)halides with CO₂ avoiding the use of sacrificial electrodes. Moreover, this sustainable and economic strategy with electron as the clean reductant features mild conditions, inexpensive catalyst, safe and cheap electrodes, good functional group tolerance and broad substrate scope. Mechanistic investigations indicated that the reaction might proceed via oxidative addition of aryl halides to Ni(0) complex, the reduction of aryl-Ni(II) adduct to the Ni(I) species and following carboxylation with CO₂.

Nature Communications published new progress about 637-07-0. 637-07-0 belongs to chlorides-buliding-blocks, auxiliary class Inhibitor,Cell Cycle,PPAR, name is Ethyl 2-(4-chlorophenoxy)-2-methylpropanoate, and the molecular formula is C40H35N7O8, Application In Synthesis of 637-07-0.

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

Li, Dingzhong published the artcileFeO(OH)@C-Catalyzed Selective Hydrazine Substitution of p-Nitro-Aryl Fluorides and their Application for the Synthesis of Phthalazinones, COA of Formula: C6H3ClFNO2, the publication is ChemistryOpen (2022), 11(5), e202200023, database is CAplus and MEDLINE.

An efficient hydrazine substitution of p-nitro-aryl fluorides viz., 2-chloro-1-fluoro-4-nitrobenzene, 2-bromo-1-fluoro-4-nitrobenzene, 2-fluoro-5-nitroaniline, etc. with hydrazine hydrates catalyzed by FeO(OH)@C nanoparticles is described. These hydrazine substitutions of p-nitro-aryl fluorides bearing electron-withdrawing groups such as 2-chloro-1-fluoro-4-nitrobenzene, 2-bromo-1-fluoro-4-nitrobenzene, 1-bromo-2,4-difluoro-5-nitrobenzene, etc. proceeded efficiently with high yield and selectivity. Similarly, hydrogenations of p-nitro-aryl fluorides containing electron-donating groups such as 2-fluoro-5-nitroaniline, 1-fluoro-2-methyl-4-nitrobenzene, 2-bromo-4-fluoro-1-nitrobenzene, etc. also smoothly proceeded under mild conditions. Furthermore, with these prepared aryl hydrazines viz., (2-chloro-4-nitrophenyl)hydrazine, (3-fluoro-4-nitrophenyl)hydrazine, (2-bromo-4-nitrophenyl)hydrazine, (2,3-difluoro-4-nitrophenyl)hydrazine, (2-chloro-3-fluoro-4-nitrophenyl)hydrazine, some phthalazinones I (R = H, 4-hydroxyphenyl; R¹ = 2-Cl, 2-Br, 3-F, 2-Cl-3-F, 2,3-F₂), interesting as potential structures for pharmaceuticals, have been successfully synthesized in high yields.

ChemistryOpen published new progress about 350-30-1. 350-30-1 belongs to chlorides-buliding-blocks, auxiliary class Fluoride,Chloride,Nitro Compound,Benzene, name is 3-Chloro-4-fluoronitrobenzene, and the molecular formula is C6H3ClFNO2, COA of Formula: C6H3ClFNO2.

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

Hou, Lili published the artcileReversible Photochemical Control of Singlet Oxygen Generation Using Diarylethene Photochromic Switches, Safety of 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, the publication is Journal of the American Chemical Society (2014), 136(3), 910-913, database is CAplus and MEDLINE.

Reversible noninvasive control over the generation of singlet oxygen is demonstrated in a bicomponent system comprising a diarylethene photochromic switch and a porphyrin photosensitizer by selective irradiation at distinct wavelengths. The efficient generation of singlet oxygen by the photosensitizer is observed when the diarylethene unit is in the colorless open form. Singlet oxygen generation is not observed when the diarylethene is converted to the closed form. Irradiation of the closed form with visible light (>470 nm) leads to full recovery of the singlet oxygen generating ability of the porphyrin sensitizer.

Journal of the American Chemical Society published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C15H14Cl2S2, Safety of 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene.

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