Tag: M.W=100-150

Kowalczyk, Bruce A. published the artcile< Synthesis of (dihalophenyl)acetic acids using aromatic nucleophilic substitution strategy>, COA of Formula: C6H3ClF2, the main research area is halophenylacetate preparation; acetate dihalophenyl preparation; fluorophenylacetate preparation; fluorohalobenzene cyanoacetate aromatic nucleophilic substitution.

A simple synthetic strategy to (dihalophenyl)acetates and specifically (3,5-difluorophenyl)acetate an important pharmaceutical intermediate was developed. The aromatic nucleophilic substitution of dihalofluorobenzenes using the anion of cyanoacetate yielded (dihalophenyl)cyanoacetates. Basic decarboxylation of the latter produced targeted (dihalophenyl)acetates.

Synthesis published new progress about Aryl fluorides Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 1435-43-4 belongs to class chlorides-buliding-blocks, and the molecular formula is C6H3ClF2, COA of Formula: C6H3ClF2.

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

Takashima, Hiroki; Koga, Yoshikatsu; Manabe, Shino; Ohnuki, Kazunobu; Tsumura, Ryo; Anzai, Takahiro; Iwata, Nozomi; Wang, Yang; Yokokita, Takuya; Komori, Yukiko; Mori, Daiki; Usuda, Sachiko; Haba, Hiromitsu; Fujii, Hirofumi; Matsumura, Yasuhiro; Yasunaga, Masahiro published the artcile< Radioimmunotherapy with an 211At-labeled anti-tissue factor antibody protected by sodium ascorbate>, Application of C4H4ClNO2, the main research area is astatine labeled anti tissue factor antibody sodium ascorbate radioimmunotherapy; antibody denaturation; astatine-211; radioimmunotherapy; sodium ascorbate; tissue factor.

Tissue factor (TF), the trigger protein of the extrinsic blood coagulation cascade, is abundantly expressed in various cancers including gastric cancer. Anti-TF monoclonal antibodies (mAbs) capable of targeting cancers have been successfully applied to armed antibodies such as antibody-drug conjugates (ADCs) and mol. imaging probes. We prepared an anti-TF mAb, clone 1084, labeled with astatine-211 (211At), as a promising alpha emitter for cancer treatment. Alpha particles are characterized by high linear energy transfer and a range of 50-100 μm in tissue. Therefore, selective and efficient tumor accumulation of alpha emitters results in potent antitumor activities against cancer cells with minor effects on normal cells adjacent to the tumor. Although the 211At-conjugated clone 1084 (211At-anti-TF mAb) was disrupted by an 211At-induced radiochem. reaction, we demonstrated that astatinated anti-TF mAbs eluted in 0.6% or 1.2% sodium ascorbate (SA) solution were protected from antibody denaturation, which contributed to the maintenance of cellular binding activities and cytocidal effects of this immunoconjugate. Although body weight loss was observed in mice administered a 1.2% SA solution, the loss was transient and the radioprotectant seemed to be tolerable in vivo. In a high TF-expressing gastric cancer xenograft model, 211At-anti-TF mAb in 1.2% SA exerted a significantly greater antitumor effect than nonprotected 211At-anti-TF mAb. Moreover, the antitumor activities of the protected immunoconjugate in gastric cancer xenograft models were dependent on the level of TF in cancer cells. These findings suggest the clin. availability of the radioprotectant and applicability of clone 1084 to 211At-radioimmunotherapy.

Cancer Science published new progress about Antitumor agents. 128-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C4H4ClNO2, Application of C4H4ClNO2.

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

Kong, Xianqiang; Zhang, Huizi; Xiao, Yunqing; Cao, Changsheng; Shi, Yanhui; Pang, Guangsheng published the artcile< Effective, transition metal free and selective C-F activation under mild conditions>, HPLC of Formula: 1435-43-4, the main research area is aryl fluoride aniline amination; fluorophenylaniline preparation regioselective.

A simple and effective aromatic nucleophilic monosubstitution reaction for the synthesis of aromatic amines via selective C-F bond cleavage of various fluoroarenes (mono-, di-, tri-, tetra-, penta- and perfluorobenzene) with primary and secondary aromatic amines under transition metal free conditions was demonstrated. The reaction conditions were investigated thoroughly for a wide range of fluoroarene substrates bearing different numbers of fluorine atoms, and the results showed that the solvent and reaction temperature were very crucial for the successful substitution reactions. The established methods enabled the formation of nonfluorinated and partially fluorinated aromatic amines in good to excellent yields. Several functional groups were tolerated under the optimized conditions.

RSC Advances published new progress about Amination, regioselective. 1435-43-4 belongs to class chlorides-buliding-blocks, and the molecular formula is C6H3ClF2, HPLC of Formula: 1435-43-4.

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

Grella, Melissa Phelps; Danso-Danquah, Richmond; Safo, Martin K.; Joshi, Gajanan S.; Kister, Jean; Marden, Michael; Hoffman, Stephen J.; Abraham, Donald J. published the artcile< Synthesis and Structure-Activity Relationships of Chiral Allosteric Modifiers of Hemoglobin>, Electric Literature of 29027-20-1, the main research area is chiral allosteric modifier Hb preparation; structure activity aryloxyalkanoicacid preparation Hb.

A series of allosteric effectors of Hb, 2-(aryloxy)-2-alkanoicacids, was prepared to investigate the effect of the stereocenter on allosteric activity. The chiral analogs were based on the lead compound, RSR13, with different alkyl/alkanoic and cycloalkyl/cycloalkanoic groups positioned at the acidic chiral center. Of the 23 racemic mols. synthesized, 5 were selected for resolution based on structure-activity relationships. One chiral analog, (-)-(1R,2R)-1-[4-[[(3,5-dimethylanilino)carbonyl]methyl]phenoxy]-2-methylcyclopentanecarboxylic acid (I), exhibited greater in vitro activity in Hb solutions than its antipode, racemate, and RSR13. Compound I was equipotent with RSR13 in whole blood, is a candidate for in vivo animal studies, and if efficacious and safe has a potential for use in humans. In general, it was found that chirality affects allosteric effector activity with measurable differences observed between enantiomers and the racemates.

Journal of Medicinal Chemistry published new progress about Chirality. 29027-20-1 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H8ClN, Electric Literature of 29027-20-1.

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

Chekan, Jonathan R.; Lee, Ga Young; El Gamal, Abrahim; Purdy, Trevor N.; Houk, K. N.; Moore, Bradley S. published the artcile< Bacterial Tetrabromopyrrole Debrominase Shares a Reductive Dehalogenation Strategy with Human Thyroid Deiodinase>, Formula: C4H4ClNO2, the main research area is crystal structure tetrabromopyrrole debrominase dehalogenation thyroid deiodinase.

Enzymic dehalogenation is an important and well-studied biol. process in both the detoxification and catabolism of small mols., many of which are anthropogenic in origin. However, dedicated dehalogenation reactions that replace a halogen atom with a hydrogen are rare in the biosynthesis of natural products. In fact, the debrominase Bmp8 is the only known example. It catalyzes the reductive debromination of the coral settlement cue and the potential human toxin 2,3,4,5-tetrabromopyrrole as part of the biosynthesis of the antibiotic pentabromopseudilin. Using a combination of protein crystallog., mutagenesis, and computational modeling, we propose a catalytic mechanism for Bmp8 that is reminiscent of that catalyzed by human deiodinases in the maintenance of thyroid hormones. The identification of the key catalytic residues enabled us to recognize divergent functional homologs of Bmp8. Characterization of one of these homologs demonstrated its debromination activity even though it is found in a completely distinct genomic context. This observation suggests that addnl. enzymes outside those associated with the tetrabromopyrrole biosynthetic pathway may be able to alter the lifetime of this compound in the environment.

Biochemistry published new progress about Crystal structure. 128-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C4H4ClNO2, Formula: C4H4ClNO2.

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

Guerrand, Helene D. S.; Marciasini, Ludovic D.; Jousseaume, Melissa; Vaultier, Michel; Pucheault, Mathieu published the artcile< Borylation of Unactivated Aryl Chlorides under Mild Conditions by Using Diisopropylaminoborane as a Borylating Reagent>, HPLC of Formula: 1435-43-4, the main research area is borylation unactivated aryl chloride diisopropylamino borane borylating reagent; palladium catalyzed coupling aryl chloride diisopropylaminoborane; boron carbon bond formation; pinacol aryl boronate preparation; aromatics; boron; halogens; homogeneous catalysis; palladium.

The synthesis of arylboronic ester derivatives from aryl chlorides by using aryl(amino)boranes is described. Palladium-catalyzed coupling between aryl chlorides and diisopropylaminoborane leads to the formation of a C-B bond under mild conditions. A wide range of functional groups are tolerated, making this method particularly useful for the borylation of functionalized aromatics

Chemistry – A European Journal published new progress about Aryl chlorides Role: RCT (Reactant), RACT (Reactant or Reagent) (unactivated). 1435-43-4 belongs to class chlorides-buliding-blocks, and the molecular formula is C6H3ClF2, HPLC of Formula: 1435-43-4.

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

Christopher, John A.; Aves, Sarah J.; Brown, Jason; Errey, James C.; Klair, Suki S.; Langmead, Christopher J.; Mace, Oliver J.; Mould, Richard; Patel, Jayesh C.; Tehan, Benjamin G.; Zhukov, Andrei; Marshall, Fiona H.; Congreve, Miles published the artcile< Discovery of HTL6641, a dual orexin receptor antagonist with differentiated pharmacodynamic properties>, Recommanded Product: 1-Chloro-3,5-difluorobenzene, the main research area is suvorexant HTL6641 neuroprotectant pharmacokinetics insomnia.

A novel series of potent, selective, and orally efficacious dual antagonists of the orexin receptors has been investigated, resulting in the identification of lead compound 27 (HTL6641). Comprehensive data for 27 are presented, including in vivo PK parameters, confirmation of receptor occupancy through ex vivo binding and efficacy in a rat sleep model. A key feature of the series is a short dissociation half-life, measured by surface plasmon resonance (SPR) using stabilized receptors, and confirmed by radioligand-binding experiments Based on a consideration of the requirements for a potential treatment for insomnia, compound 27 was identified as having the best balance of properties from the chem. series.

MedChemComm published new progress about Insomnia. 1435-43-4 belongs to class chlorides-buliding-blocks, and the molecular formula is C6H3ClF2, Recommanded Product: 1-Chloro-3,5-difluorobenzene.

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

Gu, Yan; Dai, Lei; Mao, Kaimin; Zhang, Jinghang; Wang, Chang; Zhao, Liming; Rong, Liangce published the artcile< Time-Economical Radical Cascade Cyclization/Haloazidation of 1,6-Enynes: Construction of Highly Functional Succinimide Derivatives>, Synthetic Route of 128-09-6, the main research area is phenyl phenylpropioloyl methacrylamide halosuccinimide azidotrimethylsilane tandem radical cyclization haloazidation; halobenzylidene azidomethyl phenylsuccinimide preparation diastereoselective regioselective green chem; azidotrimethylsilane phenyl phenylpropioloyl methacrylamide tandem radical cyclization azidation; benzylidene azidomethyl phenylsuccinimide preparation diastereoselective regioselective green chem.

A “”time-economical”” radical cascade cyclization/haloazidation of 1,6-enynes provided a direct approach to access highly functional succinimide compounds Moderate to excellent yields along with excellent Z/E ratio were obtained under the reaction features of broad substrate scope, good functional group tolerance, and mild reaction conditions.

Organic Letters published new progress about Alkenynes Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 128-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C4H4ClNO2, Synthetic Route of 128-09-6.

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

Kolar, Michal; Hostas, Jiri; Hobza, Pavel published the artcile< The strength and directionality of a halogen bond are co-determined by the magnitude and size of the σ-hole>, Electric Literature of 1435-43-4, the main research area is halogen bond strength directionality sigma hole magnitude size effect.

The σ-holes of halogen atoms on various aromatic scaffolds were described in terms of their size and magnitude. The electrostatic potential maps at the CAM-B3LYP-D3(bj)/def2-QZVP level were calculated and the σ-holes of >100 aromatic analogs were thoroughly analyzed to relate the σ-holes to the binding preferences of the halogenated compounds Both the size and magnitude of the σ-hole increase when passing from chlorinated to iodinated analogs. Also, the σ-hole properties were studied upon chem. substitution of the aromatic ring as well as in the aromatic ring. Further, the angular variations of the interactions were studied on a selected set of halogenbenzene complexes with argon and hydrogen fluoride (HF). To analyze interaction energy components, DFT-SAPT angular scans were performed. The interaction energies of bromobenzene complexes were evaluated at the CCSD(T)/complete basis set level providing the benchmark energetic data. The strength of the halogen bond between halogenbenzenes and Ar atoms and HF mols. increases while its directionality decreases when passing from chlorine to iodine. The decrease of the directionality of the halogen bond is larger for a HF-containing complex and is caused by electrostatic and exchange-repulsion energies. These findings are especially valuable for protein-halogenated ligand-binding studies, applied in the realm of rational drug development and lead optimization.

Physical Chemistry Chemical Physics published new progress about Aryl halides Role: PRP (Properties). 1435-43-4 belongs to class chlorides-buliding-blocks, and the molecular formula is C6H3ClF2, Electric Literature of 1435-43-4.

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

Manisha; Gupta, Shiv Shankar; Dhiman, Ankit Kumar; Sharma, Upendra published the artcile< Rh(III)-Catalyzed Selective C7 Halogenation of Indolines>, SDS of cas: 128-09-6, the main research area is haloindoline preparation regioselective halogenation halosuccinimide rhodium catalyst; pyrimidylindoline halosuccinimide halogenation rhodium catalyst regioselective.

An efficient Rh-catalyzed catalytic method has been developed for selective C7 halogenation of N-pyrimidyl indolines I (R = H, 5-Ph, 6-F, OCH2Ph, etc., R1 = H, 2-EtO2C, 3-Me, 2-Me, R2 = H) with N-halosuccinimides (halo = chloro, bromo, iodo) to produce the corresponding halides I (R2 = Br, Cl, I) in good to excellent yields. The advantages of this strategy include broad substrate scope and excellent regioselectivity for C7 functionalization of the indolines and feasibility at the gram scale level. Various control experiments have been performed to understand the reaction pathway. Applicability of current methodol. has been demonstrated by indole synthesis and post-transformation of the C7 halogenated indolines into different valuable mols. The reaction is also applicable to the preparation of halogenated carbazoles II (R2 = Br, Cl, I) and tetrahydroquinolines III (R2 = Br, I).

European Journal of Organic Chemistry published new progress about Carbazoles Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 128-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C4H4ClNO2, SDS of cas: 128-09-6.

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