Category: chlorides-buliding-blocks

Boehm, Philip published the artcilePalladium-Catalyzed Decarbonylative Iodination of Aryl Carboxylic Acids Enabled by Ligand-Assisted Halide Exchange, Synthetic Route of 6313-54-8, the publication is Angewandte Chemie, International Edition (2021), 60(31), 17211-17217, database is CAplus and MEDLINE.

An efficient and broadly applicable palladium-catalyzed iodination of inexpensive and abundant aryl and vinyl carboxylic acids via in situ activation to the acid chloride and formation of a phosphonium salt is reported. The use of 1-iodobutane as iodide source in combination with a base and a deoxychlorinating reagent gives access to a wide range of aryl and vinyl iodides under Pd/Xantphos catalysis, including complex drug-like scaffolds. Stoichiometric experiments and kinetic anal. suggest a unique mechanism involving C-P reductive elimination to form the Xantphos phosphonium chloride, which subsequently initiates an unusual halogen exchange by outer sphere nucleophilic substitution.

Angewandte Chemie, International Edition published new progress about 6313-54-8. 6313-54-8 belongs to chlorides-buliding-blocks, auxiliary class Pyridine,Chloride,Carboxylic acid, name is 2-Chloroisonicotinic acid, and the molecular formula is C6H4ClNO2, Synthetic Route of 6313-54-8.

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

Dulski, Mateusz published the artcileDifferent route of hydroxide incorporation and thermal stability of new type of water clathrate: X-ray single crystal and Raman investigation, Safety of Sodium chloro(tosyl)amide trihydrate, the publication is Scientific Reports (2017), 7(1), 1-9, database is CAplus and MEDLINE.

Chlormayenite Ca₁₂Al₁₄O₃₂[₄Cl₂] (-vacancy) is partially hydrated micro porouss mineral with hydroxide groups situated at various crystallog. sites. There are few mechanisms describing its hydration. The first one assumes Cl^– substitution by OH^– at the center of the structural cages (W-site). The second one determines the converting a T1O₄ tetrahedron to a T1O₃(OH)₃ octahedron due to the replacement of oxygen at the O2 site by three OH-groups according to the scheme: (^O2O^2- + ^WCl^–) → 3 × ^O2aOH. The third mechanism, not considered so far in the case of zeolite-like minerals, includes the hydroxide incorporation in form of hydrogarnet defect due to the arrangement of tetrahedral (OH)₄ in vacant cages. This yields a strong hydrated phase containing even up to 35% of water more than in any currently known mineral applicable to Portland cement. Moreover, water mols. present in different structural cages are stable up to 355 K while dehydroxylation linked to the gradual loss of only 8% of OH^– groups according to 3^O2aOH^– → ^O2O^2- +^WOH^– + ^gH₂O occurs at temperature range from 355 K to 598 K.

Scientific Reports 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, Safety of Sodium chloro(tosyl)amide trihydrate.

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

Tan, Daniel A. published the artcileSynthesis of Distally-Bridged Chiral Resorcinarene Crowns, Category: chlorides-buliding-blocks, the publication is European Journal of Organic Chemistry (2020), 2020(35), 5695-5708, database is CAplus.

Our interest in the potential of chiral tetramethoxy-resorcinarene as agents for chiral recognition has led us to synthesize twelve distally-bridged chiral resorcinarene crowns. The fascinating architecture of these partially-enclosed chiral basket mols. is evident in the solid-state structures which have been determined by single-crystal X-ray crystallog. Moreover, the enantiomers of these chiral resorcinarene crowns have been resolved via diastereomeric resolution, with the absolute configuration of the diastereomers being determined by X-ray crystallog. This work enables further exploration of these enantio-pure chiral baskets as possible chiral resolving agents.

European Journal of Organic Chemistry published new progress about 21286-54-4. 21286-54-4 belongs to chlorides-buliding-blocks, auxiliary class Chiral,Chloride,Sulfonyl chlorides,Aliphatic cyclic hydrocarbon,Ketone, name is ((1S,4R)-7,7-Dimethyl-2-oxobicyclo[2.2.1]heptan-1-yl)methanesulfonyl chloride, and the molecular formula is C5H4N4, Category: chlorides-buliding-blocks.

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

Chevalier, Arnaud published the artcileBioconjugatable Azo-Based Dark-Quencher Dyes: Synthesis and Application to Protease-Activatable Far-Red Fluorescent Probes, Formula: C22H23ClN4, the publication is Chemistry – A European Journal (2013), 19(5), 1686-1699, database is CAplus and MEDLINE.

The authors describe the efficient synthesis and one-step derivatization of novel, nonfluorescent azo dyes based on the Black Hole Quencher-3 (BHQ-3) scaffold. These dyes were equipped with various reactive and/or bioconjugatable groups (azido, α-iodoacetyl, ketone, terminal alkyne, vicinal diol). The azido derivative is highly reactive in the context of copper-catalyzed azide-alkyne cycloaddition (CuAAC) reactions and allowed easy synthetic access to the first water-soluble (sulfonated derivative) and aldehyde-modified BHQ-3 dyes, the direct preparation of which failed by conventional azo-coupling reactions. The aldehyde- and α-iodoacetyl-containing fluorescence quenchers were readily conjugated to aminooxy- and cysteine-containing peptides by the formation of a stable oxime or thioether linkage, resp. Further fluorescent labeling of the resultant peptide conjugates with red- or far-red-emitting rhodamine or cyanine dyes through sequential and/or one-pot bioconjugations, led to novel Foerster resonance energy transfer (FRET) based probes suitable for the in vivo detection and imaging of urokinase plasminogen activator, a key protease in cancer invasion and metastasis.

Chemistry – A European Journal 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, Formula: C22H23ClN4.

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

Orehovec, Iva published the artcileBis-pyrene photo-switch open- and closed-form differently bind to ds-DNA, ds-RNA and serum albumin and reveal light-induced bioactivity, Application In Synthesis of 219537-97-0, the publication is International Journal of Molecular Sciences (2021), 22(9), 4916, database is CAplus and MEDLINE.

Newly designed and synthesized diarylethene (DAE) derivatives with aliphatic amine sidearms I and one with two pyrenes II, revealed excellent photo-switching property of central DAE core in MeOH and water. The only exception was bis-pyrene analog, its DAE core very readily photochem. closed, but reversible opening completely hampered by aromatic stacking interaction of pyrene(s) with cyclic DAE. In this process, pyrene fluorescence showed to be a reliable monitoring method, an open form characterized by strong emission at 480 nm (typical for pyrene-aggregate), while closed form emitted weakly at 400 nm (typical for pyrene-DAE quenching). Only open DAE-bis-pyrene form interacted measurably with ds-DNA/RNA by flexible insertion in polynucleotide grooves, while self-stacked closed form did not bind to DNA/RNA. For the same steric reasons, flexible open DAE-bis-pyrene form was bound to at least three different binding sites at bovine serum albumin (BSA), while rigid, self-stacked closed form interacted dominantly with only one BSA site. Preliminary screening of antiproliferative activity against human lung carcinoma cell line A549 revealed that all DAE-derivatives were non-toxic. However, bis-pyrene analog efficiently entered cells and located in the cytoplasm, whereby irradiation by light (315-400 nm) resulted in a strong, photo-induced cytotoxic effect, typical for pyrene-related singlet oxygen species production

International Journal of Molecular Sciences 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, Application In Synthesis of 219537-97-0.

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

Okawara, Tadashi published the artcileConvenient syntheses of cyclic carboxamides from α,β,γ,δ and ε-halocarboxamides under phase transfer conditions, COA of Formula: C3H3Br2ClO, the publication is Chemical & Pharmaceutical Bulletin (1982), 30(4), 1225-33, database is CAplus.

Piperazine-2,5-diones I (R = H, Me; R¹ = PhCH₂, Ph) were prepared by N-alkylation between two mols. of α-halocarboxamides RCHXCONHR¹ (same R, R¹; X = Cl, Br) in the presence of a phase transfer catalyst in yields of 64-88%. II (R=H, Me; R¹=H, Me, Br; R²=Ph, PhCH₂), III (Q= CH₂CH₂, o-, m-, and p-phenylene, p-C₆H₄SO₂C₆H₄–p), IV (R= H, Me; R¹= PhCH₂, Ph; n=1,2,3) were similarly synthesized by intramol. N-alkylation of the corresponding halocarboxamides under phase transfer conditions in 53-99 % yields.

Chemical & Pharmaceutical Bulletin 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, COA of Formula: C3H3Br2ClO.

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

Vishnumurthy, Kodumuru published the artcileNovel and efficient one-step parallel synthesis of dibenzopyranones via Suzuki-Miyaura cross coupling, Recommanded Product: 4-Chloro-2-hydroxyphenylboronic acid, the publication is Journal of Combinatorial Chemistry (2010), 12(5), 664-669, database is CAplus and MEDLINE.

Microwave-promoted novel and efficient one-step parallel synthesis of dibenzopyranones and heterocyclic analogs from bromo arylcarboxylates and o-hydroxyarylboronic acids via Suzuki-Miyaura cross coupling reaction is described. Spontaneous lactonization gave dibenzopyranones and heterocyclic analogs bearing electron-donating and -withdrawing groups on both aromatic rings in good to excellent yields.

Journal of Combinatorial Chemistry published new progress about 1238196-66-1. 1238196-66-1 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Benzene,Phenol,Boronic Acids,Boronic acid and ester, name is 4-Chloro-2-hydroxyphenylboronic acid, and the molecular formula is C9H4F6O, Recommanded Product: 4-Chloro-2-hydroxyphenylboronic acid.

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

Roszkowski, Piotr published the artcileNovel (+)-3-carene derivatives and their application in asymmetric synthesis, COA of Formula: C7H13ClNNaO5S, the publication is Synthesis (2015), 47(4), 569-574, database is CAplus.

A simple synthetic procedure for the preparation of mono-N-tosylated 1,2-diamines derived from (+)-3-carene is described. (+)-3-Carene is transformed into the corresponding N-tosylaziridine using chloramine-T trihydrate. Subsequent ring-opening with NaN₃, followed by reduction of the azide function gives the optically pure mono-N-tosylated 1,2-diamine. This ligand is effective in asym. transfer hydrogenations of aromatic ketones. It can also be transformed into other chiral ligands by alkylation of the amino group for application in the addition of Et₂Zn to benzaldehydes.

Synthesis 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, COA of Formula: C7H13ClNNaO5S.

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

Gal, Noga published the artcileMembrane interactions of ionic liquids: Possible determinants for biological activity and toxicity, Recommanded Product: N-Benzyl-N,N-dibutylbutan-1-aminium chloride, the publication is Biochimica et Biophysica Acta, Biomembranes (2012), 1818(12), 2967-2974, database is CAplus and MEDLINE.

Ionic liquids (ILs) are a class of diverse organic salts with relatively low m.ps. (below 100 °C) which have attracted considerable interest as a promising “green” substitute for organic solvents. The broad solvation properties of ILs and their high solubility in water, however, present health risks, in particular since it was shown that many ILs exhibit cytotoxic properties. In this context, interactions of ILs with the cellular membrane are believed to constitute a primary culprit for toxicity. We present a comprehensive biophys. and microscopy study of membrane interactions of a series of ILs having different side-chain compositions and lengths, and cationic head-group structures and orientations. The exptl. data reveal that the ILs studied exhibit distinct mechanisms of membrane binding, insertion, and disruption which could be correlated with their biol. activities. The results indicate, in particular, that both the side chain composition and particularly the head-groups of ILs constitute determinants for membrane activity and consequent cell toxicity. This work suggests that tuning membrane interactions of ILs should be an important factor for designing future compounds with benign environmental impact.

Biochimica et Biophysica Acta, Biomembranes 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

Sambaiah, M. published the artcileTandem Schiff-Base Formation/Heterocyclization: An Approach to the Synthesis of Fused Pyrazolo-Pyrimidine/Isoxazolo-Pyrimidine Hybrids, Related Products of chlorides-buliding-blocks, the publication is Synlett (2019), 30(5), 586-592, database is CAplus.

A new synthesis of pyrazolo[4,3-d]pyrimidines and isoxazolo[4,5-d]pyrimidines was described. Key steps in the synthesis involve Stille coupling of 4,6-dichloro-2-phenyl-pyrimidine with tributyl(1-ethoxyvinyl)stannane and tandem Schiff-base formation/heterocyclization of 2,6-di-aryl-5-fluoro-4-acetylpyrimidine with hydrazines or hydroxylamine to give pyrazolo[4,3-d]pyrimidines and isoxazolo[4,5-d]pyrimidines, resp. The position of the fluoro group in the pyrimidine ring is important for the success of heterocyclization reaction.

Synlett 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 C7H8BClO2, Related Products of chlorides-buliding-blocks.

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