Month: October 2022

Al-Masum, Mohammad; Hira, Arpona; Chrisman, Sara; Nguyen, Ngan T. published the artcile< Introducing efficient palladium catalyzed cross coupling reaction of tertiary alcohols and aroyl chlorides for the synthesis of highly substituted esters>, Recommanded Product: 2-(Trifluoromethoxy)benzoyl chloride, the main research area is alc benzoyl chloride palladium catalyst cross coupling reaction; aryl ester preparation.

Palladium inserted ArCOPdCl species reacts with tertiary alcs. and cross-coupling under microwave heating, minimized the formation of probable carbenium ion and promoted successful production of highly substituted esters in good to high yields.

Tetrahedron Letters published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 162046-61-9 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H4ClF3O2, Recommanded Product: 2-(Trifluoromethoxy)benzoyl chloride.

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

Shu, Liwei; Ren, Lulu; Wang, Yuchen; Fang, Tao; Ye, Zhijian; Han, Weidong; Chen, Chao; Wang, Hangxiang published the artcile< Niacin-ligated platinum(IV)-ruthenium(II) chimeric complexes synergistically suppress tumor metastasis and growth with potentially reduced toxicity in vivo>, SDS of cas: 67421-02-7, the main research area is antitumor niacin platinum ruthenium chimeric complexes synergy metastasis proliferation.

Niacin-ligated platinum(IV)-ruthenium(II) chimeric complexes have been synthesized and evaluated for their antitumor performance. The water-soluble optimal complex was shown to be a chimeric prodrug that not only potently inhibits the metastasis and proliferation of tumor cells but also has an unexpectedly higher safety margin in animals compared with the traditionally-used, clin. approved drug cisplatin.

Chemical Communications (Cambridge, United Kingdom) published new progress about Antitumor agents. 67421-02-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C24H36Cl4Ru2, SDS of cas: 67421-02-7.

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

Xu, Yu; Cantwell, Lucas; Molosh, Andrei I.; Plant, Leigh D.; Gazgalis, Dimitris; Fitz, Stephanie D.; Dustrude, Erik T.; Yang, Yuchen; Kawano, Takeharu; Garai, Sumanta; Noujaim, Sami F.; Shekhar, Anantha; Logothetis, Diomedes E.; Thakur, Ganesh A. published the artcile< The small molecule GAT1508 activates brain-specific GIRK1/2 channel heteromers and facilitates conditioned fear extinction in rodents>, Synthetic Route of 31166-29-7, the main research area is GIRK1 GIRK2 channel activator preparation fear posttraumatic stress disorder; GIRK channels; PIP2; basolateral amygdala; medicinal chemistry; neurophysiology; phosphoinositide; potassium channel; small molecule; specific activator.

G-protein- gated inwardly-rectifying K+ (GIRK) channels are targets of Gi/o-protein-signaling systems that inhibit cell excitability. GIRK channels exist as homotetramers (GIRK2 and GIRK4) or heterotetramers with nonfunctional homomeric subunits (GIRK1 and GIRK3). Although they have been implicated in multiple conditions, the lack of selective GIRK drugs that discriminate among the different GIRK channel subtypes has hampered investigations into their precise physiol. relevance and therapeutic potential. Here, we report on a highly-specific, potent, and efficacious activator of brain GIRK1/2 channels. Using a chem. screen and electrophysiol. assays, we found that this activator, the bromothiophene-substituted small mol. GAT1508, is specific for brain-expressed GIRK1/2 channels rather than for cardiac GIRK1/4 channels. Computational models predicted a GAT1508- binding site validated by exptl. mutagenesis experiments, providing insights into how urea-based compounds engage distant GIRK1 residues required for channel activation. Furthermore, we provide computational and exptl. evidence that GAT1508 is an allosteric modulator of channel-phosphatidylinositol 4,5-bisphosphate interactions. Through brain-slice electrophysiol., we show that subthreshold GAT1508 concentrations directly stimulate GIRK currents in the basolateral amygdala (BLA) and potentiate baclofen-induced currents. Of note, GAT1508 effectively extinguished conditioned fear in rodents and lacked cardiac and behavioral side effects, suggesting its potential for use in pharmacotherapy for post-traumatic stress disorder. In summary, our findings indicate that the small mol. GAT1508 has high specificity for brain GIRK1/2 channel subunits, directly or allosterically activates GIRK1/2 channels in the BLA, and facilitates fear extinction in a rodent model.

Journal of Biological Chemistry published new progress about Allosteric modulators. 31166-29-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C5H2Cl2O2S, Synthetic Route of 31166-29-7.

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

Galli, Marzia; Fletcher, Catherine J.; del Pozo, Marc; Goldup, Stephen M. published the artcile< Scalable anti-Markovnikov hydrobromination of aliphatic and aromatic olefins>, Name: 3-Chlorophenethyl Bromide, the main research area is alkene hydrogen bromide regioselective hydrobromination; alkyl bromide preparation.

To improve access to a key synthetic intermediate a direct hydrobromination-Negishi route was targeted. Unsurprisingly, the anti-Markovnikov addition of HBr to estragole in the presence of AIBN proved successful. However, even in the absence of an added initiator, anti-Markovnikov addition was observed Re-examination of early reports revealed that selective Markovnikov addition, often simply termed “”normal”” addition, was not always observed with HBr unless air was excluded, leading to the rediscovery of a reproducible and scalable initiator-free protocol.

Organic & Biomolecular Chemistry published new progress about Alkenes Role: RCT (Reactant), RACT (Reactant or Reagent). 16799-05-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H8BrCl, Name: 3-Chlorophenethyl Bromide.

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

Stadler, Sonja M.; Goettker-Schnetmann, Inigo; Mecking, Stefan published the artcile< Incorporation of Radicals during Ni(II)-Catalyzed Ethylene Insertion Polymerization>, Category: chlorides-buliding-blocks, the main research area is nickel catalyzed ethylene insertion polymerization radical incorporation.

A possible involvement of radicals in catalytic insertion chain growth remains elusive, albeit it could account for thus far inconclusive exptl. observations and enable yet unachieved synthetic reaction schemes. This work shows that radicals present, deliberately generated for this purpose, are incorporated as end groups in ethylene insertion polymerizations Azo initiators (R-N = N-R’ with R = C(CH3)2COOMe, Ph, 3,5-F2C6H3) added to pressure reactor Ni(II)salicylaldiminato-catalyzed ethylene polymerizations afforded initiator-derived aryl or alkyl end groups, resp., as revealed by in-depth NMR studies of the polymer formed. The observation of addnl. solvent- derived aryl end groups, originating from radical transfer to toluene, underlines that end groups are indeed formed from radicals. Evidence for incorporation as a chain-initiating as well as -terminating end group is discussed.

ACS Catalysis published new progress about Crystal structure. 1435-43-4 belongs to class chlorides-buliding-blocks, and the molecular formula is C6H3ClF2, Category: chlorides-buliding-blocks.

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

Saito, Yuta; Higashihara, Tomoya; Ueda, Mitsuru published the artcile< Highly refractive and photosensitive polyimide>, Application of C8H3ClO3, the main research area is refractive photosensitive polyimide.

A highly refractive sulfur-containing photosensitive polyimide (PSPI) based on the PI from 4,4′-[p-thiobis(phenylenesulfanyl)]diphthalic anhydride (3SDEA) and 4,4′-thiodianiline (SDA), 4,4′-methylenebis[2,6-bis(methoxymethyl)phenol] (MBMP) as a crosslinker, and (5-propylsulfonyloxyimino-5H-thiophen-2-ylidene)-(2-methylphenyl)acetonitrile (PTMA) as a photoacid generator has been developed. The matrix polymer showed high transparency in the g-line region and the high reflective index of 1.7452 and low birefringence of 0.0081. The PSPI consisting of the PI (84.8 wt%), MBHP (11.0 wt%), and PTMA (4.2 wt%) exhibited the high sensitivity (D0.5) of 36 mJ/cm2 and good contrast (γ0.5) of 5.1, resp., producing a clear neg.-tone line-and-space pattern with 8-μm resolution

Journal of Photopolymer Science and Technology published new progress about Dissolution. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Application of C8H3ClO3.

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

Fuchs, Richard; Bloomfield, Jordan J. published the artcile< Transmission of electronic effects by the cyclopropane ring. Rates of alkaline hydrolysis of ethyl cis- and trans-2-phenylcyclopropanecarboxylates>, Formula: C10H9ClO2, the main research area is .

The rates of alk. hydrolysis of a series of m- and p-substituted Et β-phenylpropionates and of Et trans- and cis-2-(substituted phenyl)cyclopropanecarboxylates in 7.8% ethanol at 30° were measured. A comparison of Hammett ρ-values for these series, Et cis- and trans-cinnamates, and Et phenylpropiolates indicates that the influence of substituents on the reactivity increases in the six ester series in the order given above.

Journal of Organic Chemistry published new progress about Hydrolysis. 90940-40-2 belongs to class chlorides-buliding-blocks, and the molecular formula is C10H9ClO2, Formula: C10H9ClO2.

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

Li, He; Zhang, Yijun; Liu, Dinghua; Liu, Xiaoqin published the artcile< An improved method for the synthesis of phenylacetic acid derivatives via carbonylation>, Related Products of 611-19-8, the main research area is phenylacetic acid preparation; benzyl chloride carbonylation palladium catalyst.

A series of phenylacetic acid derivatives RCH2CO2H [R = 2-ClC6H4, 4-MeC6H4, 2,4-Cl2C6H3, etc.] was synthesized via bistriphenylphosphine palladium dichloride catalyzed carbonylation reaction of benzyl chloride derivatives in presence of tetraethylammonium chloride and sodium hydroxide as reagents and xylene as solvent at 80°C under a CO atm. 2,4-Dichlorophenylacetic acid was obtained in a maximum yield of 95% from 2,4-dichlorobenzyl chloride using the same reaction system.

Journal of Chemical Research published new progress about Aralkyl chlorides Role: RCT (Reactant), RACT (Reactant or Reagent). 611-19-8 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H6Cl2, Related Products of 611-19-8.

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

Xu, Dan; Yao, Zhengjun; Zhou, Jintang published the artcile< Mechanical and thermal properties of a novel bismaleimide matrix resin for high-performance composite materials>, Name: 5-Chloroisobenzofuran-1,3-dione, the main research area is amino polythioetherimide bismaleimidodiphenyl methane diallylbisphenol resin mech thermal property.

A novel bismaleimide matrix resin of amino-polythioetherimide (PTEI-N)/4,4′-bismaleimidodiphenyl methane (BDM)/2,2′-diallylbisphenol A (BA) was prepared Mech. measurements, dynamic thermomech. anal., thermogravimetric anal. (TGA), and microanalyses were conducted to assess the mech. properties, thermal resistance, and morphol. of the modified resin. Results demonstrate that the addition of PTEI-N has significant effects on the mech. properties of the BDM/BA system. Compared with the pure BDM/BA resin, the PTEI-N/BDM/BA system markedly improves the tensile strength, flexural strength, and impact strength, given an appropriate amount of PTEI-N. Scanning electron microscopic and energy-dispersive spectroscopic results show that PTEI-N is distributed uniformly in the BDM/BA system, and the interfacial compatibility between the PTEI-N and BDM/BA phase is excellent. TGA shows that the BDM/BA resin continues to exhibit good thermal resistance with a suitable dosage of PTEI-N. These changes in properties are closely correlated with the addition of PTEI-N. The PTEI-N/BDM/BA resin system shows potential applications in many fields.

High Performance Polymers published new progress about Bending strength. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Name: 5-Chloroisobenzofuran-1,3-dione.

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