Category: bromides-buliding-blocks

Ning, Shulin; Zheng, Lianyou; Bai, Ya; Wang, Shutao; Wang, Siyu; Shi, Lingling; Gao, Qiansong; Che, Xin; Zhang, Zhuoqi; Xiang, Jinbao published their research in Tetrahedron in 2021. The article was titled 《Highly selective electroreductive linear dimerization of electron-deficient vinylarenes》.Application of 1530-32-1 The article contains the following contents:

A direct electroreductive dimerization of electron-deficient vinylarenes R1R2C:CR3R4 (R1 = Ph, 4-NCC6H4, pyridin-4-yl, etc., R2 = R3 = R4 = H; R1 = 4-EtO2CC6H4, R2 = Me, Ph, R3 = R4 = H; R1 = 4-MeO2CC6H4, R2 = H, R3 = Me, R4 = H, Me; etc.) for the synthesis of 1,4-diarylbutanes R1R2CH-CR3R4-CR3R4-CHR1R2 as been developed using a simple undivided cell with inexpensive carbon electrodes at room temperature The control and deuterium-labeling experiments of electroreductive dimerization suggest that the hydrogen source comes from the solvent CH3CN. This protocol provides a mild and efficient route for the construction of C-C bond in moderate to good yields with high regioselectivity and broad substrate scope. In the experiment, the researchers used Ethyltriphenylphosphonium bromide(cas: 1530-32-1Application of 1530-32-1)

Ethyltriphenylphosphonium bromide(cas: 1530-32-1) is a phase transfer catalyst, used to accelerate the cure of phenolic-based epoxy resins, certain fluoroelastomer resins and thermosetting powder coatings. It is also used as catalysts in the synthesis of certain organic compounds and as a pharmaceutical intermediate.Application of 1530-32-1

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Mezzetta, Andrea; Guglielmero, Luca; Mero, Angelica; Tofani, Giorgio; D’Andrea, Felicia; Pomelli, Christian Silvio; Guazzelli, Lorenzo published their research in Molecules in 2021. The article was titled 《Expanding the Chemical Space of Benzimidazole Dicationic Ionic Liquids》.Recommanded Product: 629-03-8 The article contains the following contents:

Benzimidazole dicationic ionic liquids (BDILs) have not yet been widely explored in spite of their potential. Therefore, two structurally related families of BDILs, paired with either bromide or bistriflimide anions and bearing alkyl spacers ranging from C3 to C6, have been prepared Their thermal properties have been studied by thermogravimetric anal. (TGA) and differential scanning calorimetry (DSC), while their elec. properties have been assessed by cyclic voltammetry (CV). TG anal. confirmed the higher stability of the bistriflimide BDILs over the bromide BDILs, with minor variation within the two families. Conversely, DSC and CV allowed for ascertaining the role played by the spacer length. In particular, the thermal behavior changed dramatically among the members of the bistriflimide family, and all three possible thermal behavior types of ILs were observed Furthermore, cyclic voltammetry showed different electrochem. window (C3(C1BenzIm)2/2Tf2N < C4(C1BenzIm)2/2Tf2N, C5(C1BenzIm)2/2Tf2N < C6(C1BenzIm)2/2Tf2N) as well as a reduction peak potential, shape, and intensity as a function of the spacer length. The results obtained highlight the benefit of accessing a more structurally diverse pool of compounds offered by dicationic ILs when compared to the parent monocationic ILs. In particular, gains are to be found in the ease of fine-tuning their properties, which translates in facilitating further investigations toward BDILs as designer solvents and catalysts. The experimental process involved the reaction of 1,6-Dibromohexane(cas: 629-03-8Recommanded Product: 629-03-8)

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.Recommanded Product: 629-03-8

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Zhao, Lei; Meng, Xiao; Zou, Yifeng; Zhao, Junsong; Wang, Lili; Zhang, Lanlan; Wang, Chao published their research in Organic Letters in 2021. The article was titled 《Directed Nickel-Catalyzed Diastereoselective Reductive Difunctionalization of Alkenyl Amines》.Reference of Methyl 3-bromopropanoate The article contains the following contents:

We report herein an intermol. syn-arylalkylation and alkenylalkylation of alkenyl amines with two different organohalides (iodides and bromides) using Ni(II) catalyst. The cleavable bidentate quinolinamide was utilized after extensive directing group screening to enable olefin difunctionalization with high levels of regio-, chemo-, and diastereocontrol. This general and practical protocol was compatible with α- or β-substituted terminal alkenes and internal alkenes, providing rapid access to branched aliphatic amines bearing two skipped and vicinal stereocenters with high diastereoselectivities that would otherwise be difficult to synthesize. After reading the article, we found that the author used Methyl 3-bromopropanoate(cas: 3395-91-3Reference of Methyl 3-bromopropanoate)

Methyl 3-bromopropanoate(cas: 3395-91-3) belongs to bromides. Most organobromine compounds, like most organohalide compounds, are relatively nonpolar. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon–bromine bond is electrophilic, i.e. alkyl bromides are alkylating agents.Reference of Methyl 3-bromopropanoate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Photoredox-Catalyzed Stereoselective Synthesis of C-Nucleoside Analogs from Glycosyl Bromides and Hetero-arenes》 was written by Xia, Liwen; Fan, Wenjing; Yuan, Xiang-Ai; Yu, Shouyun. HPLC of Formula: 21085-72-3 And the article was included in ACS Catalysis in 2021. The article conveys some information:

C-nucleosides, analogs of nucleosides by replacing a C-N glycosidic bond with a C-C bond, are potential anticancer or antiviral agents. Synthesis of C-nucleoside analogs, e.g. I, enabled by photoredox-catalyzed radical coupling of glycosyl bromides with non-functionalized hetero-arenes has been described. This strategy features readily available starting materials, mild conditions, good functional group tolerance, and site- and stereoselectivities (α-configuration). A variety of monosaccharides (D-lyxose, D-ribose, L-arabinose, D-glucose, D-mannose, D-glucuronide, and D-fucose), disaccharides (lactose, melibiose, and maltose), and polysaccharide can couple with a series of non-functionalized hetero-arenes, such as purine, benzothiazole, thiazolo-pyridine, benzoxazole, benzimidazole, imidazopyridine, and phenanthridine. Biol. important mols., such as theophylline, famciclovir, ribofuranoside, and adenine, can be glycosylated directly through a C-C bond using this method. Site- and stereoselectivities can be rationalized and predicted by DFT calculations In the experimental materials used by the author, we found (2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate(cas: 21085-72-3HPLC of Formula: 21085-72-3)

(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.HPLC of Formula: 21085-72-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Imidazole-induced self-assembly of polyoxovanadate cluster organic framework for efficient Knoevenagel condensation under mild conditions》 was written by Dou, Ming-Yu; Zhong, Dan-Dan; Huang, Xian-Qiang; Yang, Guo-Yu. Computed Properties of C7H5BrO And the article was included in CrystEngComm in 2020. The article conveys some information:

Three polyoxovanadate (POV)-based clusters, [Ni(1-bIm)4]2(V4O12)·H2O, [Ni(1-eIm)(H2O)4]2(V10O28)(1-eImH)2·2H2O and [Ni(H2O)5]2(V10O28)(1-pImH)2·4H2O (1-bIm = 1-butylimidazole; 1-eIm = 1-ethylimidazole and 1-pIm = 1-propylimidazole) was synthesized. The (POV)-based cluster [Ni(1-bIm)4]2(V4O12)·H2O was controllably achieved by an imidazole-induced self-assembly strategy and exhibited a 2D POVCOF in which circular [V4O12]4- clusters were bridged by four six-coordinated Ni(II) atoms (NiN4O2 model). The (POV)-based clusters [Ni(1-eIm)(H2O)4]2(V10O28)(1-eImH)2·2H2O and [Ni(H2O)5]2(V10O28)(1-pImH)2·4H2O were obtained at lower pH values. Notably, among the three POV-based clusters, POVCOF [Ni(1-bIm)4]2(V4O12)·H2O displayed highly efficient heterogeneous solvent-free catalytic activity (yields of up to 99%) and excellent recyclability in Knoevenagel condensation at room temperature In addition to this study using o-Bromobenzaldehyde, there are many other studies that have used o-Bromobenzaldehyde(cas: 6630-33-7Computed Properties of C7H5BrO) was used in this study.

o-Bromobenzaldehyde(cas: 6630-33-7) is used in L-threonine aldolase-catalyzed enantio/diastereoselective aldol reactions.Computed Properties of C7H5BrOSynthetic applications of o-Bromobenzaldehyde include: synthesis of aza-fused polycyclic quinolines through copper-catalyzed cascade reaction, preparation of 1-substituted indazoles by CuI-catalyzed coupling with N-aryl hydrazides.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Efficient Synthesis of Hydroxy-Substituted 2-Aminobenzo[d]thiazole-6-carboxylic Acid Derivatives as New Building Blocks in Drug Discovery》 was written by Durcik, Martina; Toplak, Zan; Zidar, Nace; Ilas, Janez; Zega, Anamarija; Kikelj, Danijel; Masic, Lucija Peterlin; Tomasic, Tihomir. Application In Synthesis of Methyl 3-(bromomethyl)benzoate And the article was included in ACS Omega in 2020. The article conveys some information:

Benzo[d]thiazole is widely used in synthetic and medicinal chem., and it is a component of many compounds and drugs that have several different bioactivities. Herein, an elegant pathway for synthesis of Me 4- and 5-hydroxy-2-amino-benzo[d]thiazole-6-carboxylates as building blocks that can be substituted at four different positions on the bicycle has been described and thus offer the possibility to thoroughly explore the chem. space around the mol. studied as a ligand for the chosen target. A series of 12 new compounds was prepared using the described methods and Williamson ether synthesis.Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8Application In Synthesis of Methyl 3-(bromomethyl)benzoate) was used in this study.

Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8) belongs to organobromine compounds. 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. Application In Synthesis of Methyl 3-(bromomethyl)benzoate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Enhanced efficacy of gefitinib in drug-sensitive and drug-resistant cancer cell lines after arming with a singlet oxygen releasing moiety》 was written by Huang, Kunshan; Huo, Beibei; Li, Dongyao; Xue, Jinping; Chen, Juanjuan. Reference of 1,4-Bis(bromomethyl)benzene And the article was included in ChemMedChem in 2020. The article conveys some information:

Attractive results have been achieved with small-mol. target-based drugs in the anticancer field; however, enhancing their treatment effect and solving the problem of drug resistance remain key concerns worldwide. Inspired by the specific affinity of gefitinib for tumor cells and the strong oxidation capacity of singlet oxygen, we combined a chem. generated singlet oxygen moiety with the small-mol. targeted drug gefitinib to improve its anticancer effect. We designed and synthesized a novel compound (Y5-1), in which a small-mol. targeted therapy agent (gefitinib) and a singlet oxygen (provided by an in vitro photodynamic reaction) thermally controlled releasing moiety are covalently conjugated. We demonstrated that the introduction of the singlet oxygen thermally controlled releasing moiety enhanced the anticancer activities of gefitinib. The results of this study are expected to provide a novel strategy to enhance the effect of chemotherapy drugs on drug-resistant cell lines. In the part of experimental materials, we found many familiar compounds, such as 1,4-Bis(bromomethyl)benzene(cas: 623-24-5Reference of 1,4-Bis(bromomethyl)benzene)

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) belongs to organobromine compounds.Most of the natural organobromine compounds are produced by marine organisms , and several brominated metabolites with antibacterial , antitumor , antiviral , and antifungal activity have been isolated from seaweed, sponges, corals, molluscs, and others. Reference of 1,4-Bis(bromomethyl)benzene In contrast, terrestrial plants account only for a few bromine-containing compounds.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Lewis acid-assisted Ir(III) reductive elimination enables construction of seven-membered-ring sulfoxides》 was published in Chemical Science in 2020. These research results belong to Yang, Wu; Li, Yingzi; Zhu, Jiefeng; Liu, Wentan; Ke, Jie; He, Chuan. Related Products of 1129-28-8 The article mentions the following:

Iridium has played an important role in the evolution of C-H activation chem. over the last half century owing to its high reactivity towards stoichiometric C-H bond cleavage; however, the use of Ir(III) complexes in catalytic C-H functionalization/C-C bond formation appears to have fallen off significantly. The main problem lies in the reductive elimination step, as iridium has a tendency to form stable and catalytically inactive Ir(III) species. Herein, with a rationally designed Lewis acid assisted oxidatively induced strategy, the sluggish Ir(III) reductive elimination is successfully facilitated, enabling the facile C-C bond formation. The X-ray crystal structure of a silver salt adduct of iridacycle and DFT calculations demonstrate that the sulfoxide group acts as a key bridge connecting the Ir(III) metal center with the silver Lewis acid, which facilitates the reductive elimination of the Ir(III) metallacycle. Further identification of oxidants was carried out by performing stoichiometric reactions, which enables the development of catalytic construction of various highly functionalized seven-membered-ring sulfoxides e.g., 5,7-dihydrodibenzo[c,e]thiepine 6-oxide, that are of great interest in medicinal chem. and materials science. In the experiment, the researchers used many compounds, for example, Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8Related Products of 1129-28-8)

Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8) 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. Alkyl bromides are mainly used as alkylating agents and also find application as a solvent to extract oil from seeds and wool. Related Products of 1129-28-8

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Design of twisted conjugated molecular systems towards stable multi-colored electrochromic polymers》 was published in Dyes and Pigments in 2020. These research results belong to Gu, Hua; Xue, Yu; Hu, Faqi; Jian, Nannan; Lin, Kaiwen; Wu, Tao; Liu, Ximei; Xu, Jingkun; Lu, Baoyang. HPLC of Formula: 2635-13-4 The article mentions the following:

Promising advancement of conjugated polymers in electrochromic devices require to design high-performance electrochromic polymers with rich color conversion and long-term stability under cyclic elec. loads. Here we report a new strategy in developing multi-colored electrochromic polymers with good stability via twisted conjugated mol. engineering. A series of twisted hybrid precursors are synthesized by coupling ortho-alkylenedioxybenzenes with EDOT units, and their corresponding polymers are facilely electrosynthesized at relatively low polymerization potentials. The structure-property relationships of such ortho-alkylenedioxybenzene-EDOT hybrid precursors and polymers are systematically elucidated via DFT calculations, spectral, morphol., electrochem. and spectroelectrochem. anal., etc. We demonstrate that the dihedral angle between ortho-alkylenedioxybenzenes and EDOT moieties can substantially affect the electrochem. and electrochromic properties of polymers. As the dihedral angle and electron cloud d. increases, these hybrid polymers display distinct multiple color switching nature and good overall performance including high coloration efficiency (>200 cm2 C-1), decent optical contrast (>45%), fast switching (<1 s), and excellent switching stability (96% of optical contrast after 3500 cycling) under cyclic elec. loads. With these findings, this work will provide novel insights for rational design of stable and highly efficient multi-colored electrochromic polymers. In the part of experimental materials, we found many familiar compounds, such as 5-Bromobenzo[d][1,3]dioxole(cas: 2635-13-4HPLC of Formula: 2635-13-4)

Furthermore, the coupling of 5-Bromobenzo[d][1,3]dioxole(cas: 2635-13-4) with β-methallyl alcohol was catalyzed by Pd(OAc)2 in combination with P(t-Bu)3.HPLC of Formula: 2635-13-4

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Visible-Light-Induced Pd-Catalyzed Radical Strategy for Constructing C-Vinyl Glycosides》 was published in Organic Letters in 2020. These research results belong to Li, Ming; Qiu, Yi-Feng; Wang, Cui-Tian; Li, Xue-Song; Wei, Wan-Xu; Wang, Yu-Zhao; Bao, Qiao-Fei; Ding, Ya-Nan; Shi, Wei-Yu; Liang, Yong-Min. COA of Formula: C13H17BrO9 The article mentions the following:

A novel visible-light-induced palladium-catalyzed Heck reaction for bromine sugars and aryl olefins with high regio- and stereochem. selectivity for the preparation of C-glycosyl styrene is described. This reaction takes place in one step at room temperature by using a simple and readily available starting material. This protocol can be scaled up to a wide range of glycosyl bromide donors and aryl olefin substrates. Mechanistic studies indicate that a radical addition pathway is involved. The results came from multiple reactions, including the reaction of (2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate(cas: 21085-72-3COA of Formula: C13H17BrO9)

(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.COA of Formula: C13H17BrO9

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary