Month: October 2022

《Design, synthesis and biological activity evaluation of novel carbazole-benzylpiperidine hybrids as potential anti Alzheimer agents》 was published in Journal of Molecular Structure in 2020. These research results belong to Sadeghian, Batool; Sakhteman, Amirhossein; Faghih, Zeinab; Nadri, Hamid; Edraki, Najmeh; Iraji, Aida; Sadeghian, Issa; Rezaei, Zahra. SDS of cas: 6825-20-3 The article mentions the following:

In this study a series of novel carbazole-benzylpiperidine hybrids was designed, synthesized and evaluated as acetylcholinesterase and butyrylcholinesterase inhibitors. Moreover, some of these compounds were evaluated for anti β-secretase (BACE1) activity and metal chelation properties. Among the synthesized compounds, I (n = 2) (IC50 = 16.5μM for AChE and IC50 = 0.59μM for BuChE) and I (n = 3) (IC50 = 26.5μM for AChE and IC50 = 0.18μM for BuChE) showed highest inhibitory activity against acetylcholinesterase and butyrylcholinesterase. Furthermore, these compounds I (n = 2, 3) displayed interaction with Zn2+ ion and compound I (n = 3) showed moderate inhibitory activity against BACE1 (24.5% at 50μM). Kinetic and docking studies exhibited that these compounds likely acts as non-competitive inhibitors, able to interact with the catalytic active site (CAS) and peripheral anionic site (PAS) of acetylcholinesterase simultaneously. The experimental process involved the reaction of 3,6-Dibromo-9H-carbazole(cas: 6825-20-3SDS of cas: 6825-20-3)

3,6-Dibromo-9H-carbazole(cas: 6825-20-3) is used as a reagent in the synthesis of P7C3-A20 which is a potent neuroprotective agent. And it has been used in the preparation of N-(2-hydroxyethyl)-3,6-dibromocarbazole.SDS of cas: 6825-20-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《One-Pot Synthesis of Dithioacetals and Diselenoacetals: An Indium-Catalyzed Reductive Insertion into Disulfides and Diselenides with Orthoesters as a Methylene Source》 was published in Asian Journal of Organic Chemistry in 2020. These research results belong to Sakai, Norio; Adachi, Shunpei; Ogawa, Sho; Takahashi, Kenshiro; Ogiwara, Yohei. Synthetic Route of Br3In The article mentions the following:

A variety of dithioacetal derivatives were synthesized effectively via indium(III) catalyzed reductive insertion into either diaryl or dialkyl disulfides with orthoesters. This method was also adapted to the diselenoacetalization of diselenides. During a series of reductive insertions using this method, its noteworthy that an orthoester functions as a masked methylene moiety. The experimental process involved the reaction of Indium(III) bromide(cas: 13465-09-3Synthetic Route of Br3In)

Indium(III) bromide(cas: 13465-09-3) is used in organic synthesis as a water tolerant Lewis acid. It efficiently catalyzes the three-component coupling of β-keto esters, aldehydes and urea (or thiourea) to afford the corresponding dihydropyrimidinones.Synthetic Route of Br3In

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Manganese(I) κ2-NN complex-catalyzed formic acid dehydrogenation》 was written by Leval, Alexander; Junge, Henrik; Beller, Matthias. Reference of Bromopentacarbonylmanganese(I) And the article was included in Catalysis Science & Technology in 2020. The article conveys some information:

Hydrogen use as a sustainable energy vector is of growing interest and is the subject of current intensive research. We report herein an upgraded follow-up system for formic acid (FA) dehydrogenation (DH) catalyzed by [Mn(BisIm)(CO)3Br] (BisIm = 4,4′,5,5′-tetrahydro-1H,1′H-2,2′-bisimidazole). The latter belongs to a family of novel catalysts we developed, which are interesting since they bear easily accessible ligands from cheap, com. available starting materials. The novel catalyst system allows for improved hydrogen generation and better catalyst turnover numbers (7883 after 12 cycles of FA dosage). In addition, a significantly lower CO content in the gas phase was also achieved (47 ppm). Extended investigation of the influence of the ligand structure on the catalytic performances confirmed that the non-bonding electron pair on the N-H moiety, on the 3rd position of each imidazoline ring, is crucial for the transformation. The experimental process involved the reaction of Bromopentacarbonylmanganese(I)(cas: 14516-54-2Reference of Bromopentacarbonylmanganese(I))

Bromopentacarbonylmanganese(I)(cas: 14516-54-2) has many other uses. It is used in the formation of (eta6-arene)tricarbonylmanganese(I) by reacting with arene (arene= hexamethyl benzene, 1,2,4,5-tetramethyl benzene, mesitylene, p-xylene and toluene) in the presence silver salt.Reference of Bromopentacarbonylmanganese(I)

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Borlinghaus, Niginia; Kaschel, Johannes; Klee, Johanna; Haller, Vanessa; Schetterl, Jasmin; Heitz, Stephanie; Lindner, Tanja; Dietrich, Justin D.; Braje, Wilfried M.; Jolit, Anais published their research in Journal of Organic Chemistry in 2021. The article was titled 《Reagent and Catalyst Capsules: A Chemical Delivery System for Reaction Screening and Parallel Synthesis》.Category: bromides-buliding-blocks The article contains the following contents:

Com. available hydroxypropyl methylcellulose capsules are employed as a fast, safe, and user-friendly chem. delivery system containing all reagents (catalyst, ligand, and base) for three important transition-metal-catalyzed reactions: Buchwald-Hartwig, Suzuki-Miyaura, and metallophotoredox C-N cross-coupling reactions. This encapsulation methodol. simplifies the screening of reaction conditions and the preparation of compound libraries using parallel synthesis in organic solvents or aqueous media. These reagents-containing HPMC capsules are easy to prepare, come in different sizes, and can be stored on the bench under noninert conditions. In addition to this study using 1-Bromo-4-(trifluoromethyl)benzene, there are many other studies that have used 1-Bromo-4-(trifluoromethyl)benzene(cas: 402-43-7Category: bromides-buliding-blocks) was used in this study.

1-Bromo-4-(trifluoromethyl)benzene(cas: 402-43-7) belongs to organobromine compounds.Depending on the type of carbon to which the bromine is bonded, organic bromide could be alkyl, alkenyl, alkynyl, or aryl. Dehydrobromination, Grignard reactions, reductive coupling, Wittig reaction, and several nucleophilic substitution reactions are some of the principal reactions which involve organic bromides. Category: bromides-buliding-blocks

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Rech, Jeromy James; Yan, Liang; Wang, Zhen; Zhang, Qianqian; Bradshaw, Spencer; Ade, Harald; You, Wei published their research in ACS Applied Polymer Materials in 2021. The article was titled 《Functionalization of Benzotriazole-Based Conjugated Polymers for Solar Cells: Heteroatom vs Substituents》.Synthetic Route of C4H2Br2S The article contains the following contents:

With the recent remarkable advances in the efficiency of organic solar cells, the need to distill key structure-property relationships for semiconducting materials cannot be understated. The fundamental design criteria based on these structure-property relationships will help realize low-cost, scalable, and high-efficiency materials. In this study, we systematically explore the impact of a variety of functional groups, including nitrogen heteroatoms, fluorine substituents, and cyano groups, on benzotriazole (TAZ)-based acceptor moieties that are incorporated into the conjugated polymers. Specifically, a pyridine heterocycle was used to replace the benzene unit of TAZ, leading to the PyTAZ polymer, and a cyano substituent was added to the benzene of the TAZ unit, resulting in the CNTAZ polymer. The PyTAZ polymer suffers from low mobility and poor exciton harvesting, driven by large and excessively pure domains when blended with PCBM. The inclusion of fluorine substituents, placed strategically along the polymer backbone, can mitigate these issues, as shown with 4FT-PyTAZ. However, when this same approach is used for the cyano-functionalized polymer (CNTAZ), the resulting polymer (4FT-CNTAZ) is overfunctionalized and suffers from impure domains and recombination issues. The cyano group has a larger impact on the TAZ core compared to the nitrogen heteroatom due to the strong electron-withdrawing strength of the cyano group. Because of this, further functionalization of the cyano-based polymers has less fruitful impact on the polymer properties and results in deterioration of the solar cell efficiency. Overall, this work highlights some of the benefits, thresholds, and limitations for functionalization of conjugated polymers for organic solar cells. In the experimental materials used by the author, we found 2,5-Dibromothiophene(cas: 3141-27-3Synthetic Route of C4H2Br2S)

2,5-Dibromothiophene(cas: 3141-27-3) , is mainly used as pharmaceutical intermediate and synthesis intermediate. 2,5-Dibromothiophene may be used in the preparation of soluble α,ω-diformyl-a-oligothiophenes.Synthetic Route of C4H2Br2S

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Yang, Q.; Sun, L. X.; Gao, W. T.; Zhu, Z. Y.; Gao, X.; Zhang, Q. G.; Zhu, A. M.; Liu, Q. L. published their research in Journal of Colloid and Interface Science in 2021. The article was titled 《Crown ether-based anion exchange membranes with highly efficient dual ion conducting pathways》.Formula: C6H12Br2 The article contains the following contents:

Anion exchange membranes (AEMs) are a crucial constituent for alk. fuel cells. As the core component of fuel cells, the low performance AEMs restrict the development and application of the fuel cells. Herein, the trade-off between the OH- conductivity and dimensional stability was solved by constructing AEMs with adequate OH- conductivity and satisfactory alkali resistance using Troger′s base (TB) poly (crown ether)s (PCEs) as the main chain, the embedded quaternary ammonium (QA) and Na+-functionalized crown ether units as the cationic group. Crown ether is an electron donator, and can capture Na+ to form Na+-functionalized crown ether units to conveniently transfer OH- and significantly promote the alk. stability of the AEMs. The influence of the Na+-functionalized crown ether units on the performance of AEMs was studied in detail. The PCEs based AEMs show an obvious hydrophobic-hydrophilic microphase separation These features make them ideal platforms for the OH- conduction applications. As expected, the as-prepared PCEs-QA-100% (100% is the degree of crosslinking) AEM with an ionic exchange capacity (IEC) of 2.07 meq g-1 has a high OH- conductivity of 159 mS cm-1 at 80 °C. Furthermore, the membrane electrode assemblies fabricated using the PCEs-QA-100% AEM possess a maximum power d. of 291 mW cm-2 under the c.d. of 500 mA cm-2. In addition to this study using 1,6-Dibromohexane, there are many other studies that have used 1,6-Dibromohexane(cas: 629-03-8Formula: C6H12Br2) was used in this study.

1,6-Dibromohexane(cas: 629-03-8) is generally used to introduce C6 spacer in the molecular architecture. Some of the examples are: synthesis of solvent processable and conductive polyfluorene ionomers for alkaline fuel cell applications; synthesis of cross-linkable regioregular poly(3-(5-hexenyl)thiophene) (P3HNT) for stabilizing the film morphology in polymer photovoltaic cells.Formula: C6H12Br2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Vankova, Karolina; Rahm, Michal; Choutka, Jan; Pohl, Radek; Parkan, Kamil published their research in Chemistry – A European Journal in 2021. The article was titled 《Facile Approach to C-Glucosides by Using a Protecting-Group-Free Hiyama Cross-Coupling Reaction: High-Yielding Dapagliflozin Synthesis》.Recommanded Product: 1-Bromo-3,4,5-trimethoxybenzene The article contains the following contents:

Access to unprotected (hetero)aryl pseudo-C-glucosides via a mild Pd-catalyzed Hiyama cross-coupling reaction of protecting-group-free 1-diisopropylsilyl-D-glucal with various (hetero)aryl halides has been developed. In addition, selected unprotected pseudo-C-glucosides were stereoselectively converted into the corresponding α- and β-C-glucosides, as well as 2-deoxy-β-C-glucosides. This methodol. was applied to the efficient and high-yielding synthesis of dapagliflozin, a medicament used to treat type 2 diabetes mellitus. Finally, the versatility of our methodol. was proved by the synthesis of other analogs of dapagliflozin. In addition to this study using 1-Bromo-3,4,5-trimethoxybenzene, there are many other studies that have used 1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8Recommanded Product: 1-Bromo-3,4,5-trimethoxybenzene) was used in this study.

1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8) is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff.Recommanded Product: 1-Bromo-3,4,5-trimethoxybenzene1-Bromo-3,4,5-trimethoxybenzene can be used to synthesize N,N′-diarylated indolo[3,2-b]carbazole derivatives, which can find applications in electrophotography.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Song, Yang; Zhang, Hao; Guo, Jiabao; Shao, Yifei; Ding, Yuzhou; Zhu, Li; Yao, Xiaoquan published an article in 2021. The article was titled 《Visible-light-induced oxidative α-alkylation of glycine derivatives with ethers under metal-free conditions》, and you may find the article in European Journal of Organic Chemistry.Recommanded Product: 5437-45-6 The information in the text is summarized as follows:

In this work, a visible-light-induced oxidative α-alkylation of glycine derivatives with ethers has been developed in the presence of catalytic Eosin Y. Under the blue light of a 3 W LED, a range of α-etherized glycine derivatives, including α-amino esters, α-amino ketones and α-amino amides, were achieved with good to excellent yields and functional group tolerance with tert-Bu hydroperoxide (TBHP) as oxidant at ambient temperature The operationally easy procedure provides an economical, metal-free, and mild alternative for the synthesis of the α-etherized glycine derivatives The experimental process involved the reaction of Benzyl 2-bromoacetate(cas: 5437-45-6Recommanded Product: 5437-45-6)

Benzyl 2-bromoacetate(cas: 5437-45-6) belongs to benzyl acetate. Benzyl acetate is an aromatic chemical, usually appearing as a clear liquid with a moderate sweet-jasmine fragrance. This compound appears as a component of some of our fragrance blends.Recommanded Product: 5437-45-6

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Jankowska, Agnieszka; Satala, Grzegorz; Swierczek, Artur; Pociecha, Krzysztof; Partyka, Anna; Jastrzebska-Wiesek, Magdalena; Gluch-Lutwin, Monika; Bojarski, Andrzej J.; Wyska, Elzbieta; Chlon-Rzepa, Grazyna published an article in 2021. The article was titled 《A new class of 5-HT1A receptor antagonists with procognitive and antidepressant properties》, and you may find the article in Future Medicinal Chemistry.Quality Control of Ethyl 5-bromovalerate The information in the text is summarized as follows:

5-HT1A receptor antagonists constitute a potential group of drugs in the treatment of CNS diseases. The aim of this study was to search for new procognitive and antidepressant drugs among amide derivatives of aminoalkanoic acids with 5-HT1A receptor antagonistic properties. Thirty-three amides were designed and evaluated in silico for their drug-likeness. The synthesized compounds were tested in vitro for their 5-HT1A receptor affinity and functional profile. Moreover, their selectivity over 5-HT7, 5-HT1A and D2 receptors and ability to inhibit phosphodiesterases were evaluated. A selected 5-HT1A receptor antagonist 20 (Ki = 35 nM, Kb = 4.9 nM) showed procognitive and antidepressant activity in vivo. Novel 5-HT1A receptor antagonists were discovered and shown as potential psychotropic drugs. In addition to this study using Ethyl 5-bromovalerate, there are many other studies that have used Ethyl 5-bromovalerate(cas: 14660-52-7Quality Control of Ethyl 5-bromovalerate) was used in this study.

Ethyl 5-bromovalerate(cas: 14660-52-7) belongs to bromides. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. Organobromine compounds have fallen under increased scrutiny for their environmental impact.Quality Control of Ethyl 5-bromovalerate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Wei, Xianzhe; Hao, Mengjiao; Hu, Xiao-Xiao; Song, Zhiling; Wang, Yan; Sun, Ronghuan; Zhang, Jing; Yan, Mei; Ding, Biyan; Yu, Jinghua published an article in 2021. The article was titled 《A near-infrared fluorescent probe with large stokes shift for accurate detection of β-glucuronidase in living cells and mouse models》, and you may find the article in Sensors and Actuators, B: Chemical.Quality Control of (2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate The information in the text is summarized as follows:

β-Glucuronidase (GLU) plays a vital role in the growth, migration, angiogenesis, and metastasis of tumors. The reliable detection of GLU is an effective approach for early diagnosis of numerous disease such as cholelithiasis and colorectal cancer. In this work, a near-IR fluorescent probe (DP-GLU) with a large Stokes shift was rationally designed for accurate detection of GLU in living cells and mouse models. DP-GLU was composed of two moieties: dicyanoisophorone as NIR fluorophore and enzyme substrate as GLU recognizable group. Upon reaction with GLU, DP-GLU rapidly displayed a strong emission at 676 nm and the Stokes shift could reach 131 nm. DP-GLU also exhibited high sensitivity toward GLU, and the linearity was fitted in the concentration range of 0-100 μg/L with the detection limit as low as 1.45 x 10-2 μg/L. Furthermore, DP-GLU was used for distinguishing GLU-overexpression tumor cells from normal cells and revealed functions of noninvasive tracking GLU levels in mouse tumor models. Remarkably, DP-GLU was great potential application for cancer imaging in the early diagnoses and therapies of pathologies, which could obtain a comprehensive of the physiol. functions of GLU. The experimental process involved the reaction of (2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate(cas: 21085-72-3Quality Control of (2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate)

(2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate(cas: 21085-72-3) may be used for the synthesis of HMR1098-S-Glucuronide Methyl Ester, a new K-ATP-blocking agent being developed as a drug for prevention of sudden cardiac death.Quality Control of (2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary