Month: October 2022

Javorskis, Tomas; Jurys, Arminas; Bagdziunas, Gintautas; Orentas, Edvinas published their research in Advanced Synthesis & Catalysis in 2021. The article was titled 《Synthesis of C- and N-Substituted 1,5,2,6-Dithiadiazocanes -Electrophilic-Nucleophilic Thioamination (ENTA) Reagents》.COA of Formula: C9H11BrO3 The article contains the following contents:

A synthetic method is presented for S-N bond formation starting from cheap and affordable materials. Its show that (un)substituted N-protected cyclic eight-membered C2-sym. sulfenamides e.g, I have been prepared in a few steps using this procedure. The synthetic utility of these ambipolar derivatives e.g. I was demonstrated in a variety of synthetic transformations affording different S,N-heterocycles e.g. II of pharmaceutical relevance in one or two steps from simple starting materials. The experimental part of the paper was very detailed, including the reaction process of 1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8COA of Formula: C9H11BrO3)

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.COA of Formula: C9H11BrO31-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

Wong, Iris L. K.; Zhu, Xuezhen; Chan, Kin-Fai; Liu, Zhen; Chan, Chin-Fung; Chow, Tsun Sing; Chong, Tsz Cheung; Law, Man Chun; Cui, Jiahua; Chow, Larry M. C.; Chan, Tak Hang published an article in 2021. The article was titled 《Flavonoid Monomers as Potent, Nontoxic, and Selective Modulators of the Breast Cancer Resistance Protein (ABCG2)》, and you may find the article in Journal of Medicinal Chemistry.Synthetic Route of C9H9BrO2 The information in the text is summarized as follows:

We synthesize various substituted triazole-containing flavonoids and identify potent, nontoxic, and highly selective BCRP inhibitors. Ac18Az8 (I), Ac32Az19 (II), and Ac36Az9 (III) possess m-methoxycarbonylbenzyloxy substitution at C-3 of the flavone moiety and substituted triazole at C-4′ of the B-ring. They show low toxicity (IC50 toward L929 > 100μM), potent BCRP-inhibitory activity (EC50 = 1-15 nM), and high BCRP selectivity (BCRP selectivity over MRP1 and P-gp > 67-714). They inhibit the efflux activity of BCRP, elevate the intracellular drug accumulation, and restore the drug sensitivity of BCRP-overexpressing cells. Like Ko143, Ac32Az19 remarkably exhibits a 100% 5D3 shift, indicating that it can bind and cause a conformational change of BCRP. Moreover, it significantly reduces the abundance of functional BCRP dimers/oligomers by half to retain more mitoxantrone in the BCRP-overexpressing cell line and that may account for its inhibitory activity. They are promising candidates to be developed into combination therapy to overcome MDR cancers with BCRP overexpression. After reading the article, we found that the author used Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8Synthetic Route of C9H9BrO2)

Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8) belongs to organobromine compounds.The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. Synthetic Route of C9H9BrO2 The principal reactions for organobromides include dehydrobromination, Grignard reactions, reductive coupling, and nucleophilic substitution.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Peukert, Carsten; Langer, Laura N. B.; Wegener, Sophie M.; Tutov, Anna; Bankstahl, Jens P.; Karge, Bianka; Bengel, Frank M.; Ross, Tobias L.; Broenstrup, Mark published an article in 2021. The article was titled 《Optimization of Artificial Siderophores as 68Ga-Complexed PET Tracers for In Vivo Imaging of Bacterial Infections》, and you may find the article in Journal of Medicinal Chemistry.Safety of Benzyl 2-bromoacetate The information in the text is summarized as follows:

The diagnosis of bacterial infections at deep body sites benefits from noninvasive imaging of mol. probes that can be traced by positron emission tomog. (PET). We specifically labeled bacteria by targeting their iron transport system with artificial siderophores. The cyclen-based probes contain different binding sites for iron and the PET nuclide gallium-68. A panel of 11 siderophores with different iron coordination numbers and geometries was synthesized in up to 8 steps, and candidates with the best siderophore potential were selected by a growth recovery assay. The probes [68Ga]7 and [68Ga]15 were found to be suitable for PET imaging based on their radiochem. yield, radiochem. purity, and complex stability in vitro and in vivo. Both showed significant uptake in mice infected with Escherichia coli and were able to discern infection from lipopolysaccharide-triggered, sterile inflammation. The study qualifies cyclen-based artificial siderophores as readily accessible scaffolds for the in vivo imaging of bacteria. In addition to this study using Benzyl 2-bromoacetate, there are many other studies that have used Benzyl 2-bromoacetate(cas: 5437-45-6Safety of Benzyl 2-bromoacetate) was used in this study.

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.Safety of Benzyl 2-bromoacetate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Sen, Arunabha; Sharma, Shivani; Dutta, Subhajit; Shirolkar, Mandar M.; Dam, Gourab K.; Let, Sumanta; Ghosh, Sujit K. published an article in 2021. The article was titled 《Functionalized ionic porous organic polymers exhibiting high iodine uptake from both the vapor and aqueous medium》, and you may find the article in ACS Applied Materials & Interfaces.Reference of 1,4-Bis(bromomethyl)benzene The information in the text is summarized as follows:

Large-scale generation of radioactive iodine (129I, 131I) in nuclear power plants pose a critical threat in the event of fallout, thus rendering the development of iodine sequestering materials (from both the vapor and aqueous medium) highly pivotal. Herein, the authors report two chem. stable ionic polymers containing multiple binding sites, including Ph rings, imidazolium cations, and bromide anions, which in synergy promote adsorption of iodine/triiodide anions. In brief, exceptional iodine uptake (from the vapor phase) was observed at nuclear fuel reprocessing conditions. Furthermore, the ionic nature propelled removal of >99% of I3- from water within 30 min. Addnl., benchmark uptake capacities, as well as unprecedented selectivity, were observed for I3-anions. The excellent affinity (distribution coefficient, ∼105 mL/g) enabled iodine capture from seawater-spiked samples. Moreover, iodine-loaded compounds showed conductivity (10-4 S/cm, 10-6 S/cm), placing them among the best known conducting porous organic polymers. Lastly, DFT studies unveiled key insights in coherence with the exptl. findings. In the experiment, the researchers used 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.The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. Reference of 1,4-Bis(bromomethyl)benzene Dehydrobromination, Grignard reactions, reductive coupling, Wittig reaction, and several nucleophilic substitution reactions are some of the principal reactions which involve organic bromides.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Li, Hua; Liu, Li; Ning, Baoan; Sun, Zhiyong; Yao, Sun; Jiang, Yongqiang; Liu, Jianqing published an article in 2021. The article was titled 《Selection of an artificial paraquat-specific binding protein from a ribosome display library based on a lipocalin scaffold》, and you may find the article in Biotechnology and Applied Biochemistry.Product Details of 14660-52-7 The information in the text is summarized as follows:

In this study, an anticalin that could specifically bind paraquat (PQ), a quaternary nitrogen herbicide, as a new set of engineered receptor protein with antibody-like properties was generated to detect PQ concentration To this end, a native and random library was constructed and engineered to allow in vitro transcription and translation using an Escherichia coli lysate system. Meanwhile, a PQ derivative that carries an active aliphatic carboxylate group at the end of an aliphatic spacer arm was synthesized. Then, this compound was coupled covalently to the carrier protein bovine serum albumin/ovalbumin and amino-functionalized paramagnetic beads. Alternating selection in solution and immobilization in microtiter wells were used to pan mRNA-ribosome-antibody complexes. After several rounds of ribosome display, three variants were selected from a random library of the bilin-binding protein. The variants that could bind complex PQ with high affinity and exhibit IC50 values as low as 14.039 ± 0.970 ng/mL were identified. Moreover, the limits of detection reached 0.083 ± 0.011 ng/mL. Our data suggest that the generation of anticalins may provide a promising alternative to recombinant antibody fragments to create a stable receptor protein against hapten with bioanal. relevance.Ethyl 5-bromovalerate(cas: 14660-52-7Product Details of 14660-52-7) 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.Product Details of 14660-52-7

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Han, Yanning; Zhang, Tong; Chen, Xinyu; Chen, Qiao; Hao, Jingjun; Song, Weichao; Zeng, Yongfei; Xue, Pengchong published an article in 2021. The article was titled 《Guest-Regulated Luminescence and Force-Stimuli Response of a Hydrogen-Bonded Organic Framework》, and you may find the article in ACS Applied Materials & Interfaces.SDS of cas: 4316-58-9 The information in the text is summarized as follows:

Guest mols. may endow porous materials with new or enhanced properties as well as functions. Here, a porous hydrogen-bonded organic framework (HOF) constructed from a three-armed triphenylamine derivative is used to investigate how guests regulate photoluminescence and trigger force-stimuli response. It was found that guest solvents in pores might regulate HOF′s luminescence. Interestingly, acetic acid as a guest endowed HOF materials with longer emission wavelengths and triggered the responses to mech. force stimuli. Under shear force, an obvious blueshift in emission spectra was observed because of the loss of free guests and the conversion of π-stacking model. Further blue-shifted emission appeared while the bound guests were completely removed by heating. Mechanofluorochromic HOF materials could be regenerated through recrystallization and adsorbing guest. Conversely, HOFs with other guests and activated HOFs only resulted in a slight change in their fluorescence behaviors after force stimuli. The results came from multiple reactions, including the reaction of Tris(4-bromophenyl)amine(cas: 4316-58-9SDS of cas: 4316-58-9)

In other references, Tris(4-bromophenyl)amine(cas: 4316-58-9) is often used in the synthesis of porous luminescent covalent–organic polymers (COPs)SDS of cas: 4316-58-9

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Li, Lin; Zhang, Chun; Xu, Lei; Ye, Changqing; Chen, Shuoran; Wang, Xiaomei; Song, Yanlin published an article in 2021. The article was titled 《Luminescence Ratiometric Nanothermometry Regulated by Tailoring Annihilators of Triplet-Triplet Annihilation Upconversion Nanomicelles》, and you may find the article in Angewandte Chemie, International Edition.Quality Control of 9,10-Dibromoanthracene The information in the text is summarized as follows:

Triplet-triplet annihilation (TTA) upconversion is a special non-linear photophys. process that converts low-energy photons into high-energy photons based on sensitizer/annihilator pairs. Here, we constructed a novel luminescence ratiometric nanothermometer based on TTA upconversion nanomicelles by encapsulating sensitizer/annihilator mols. into a temperature-sensitive amphiphilic triblock polymer and obtained good linear relationships between the luminescence ratio (integrated intensity ratio of upconverted luminescence peak to the downshifted phosphorescence peak) and the temperature We also found chem. modification of annihilators would rule out the interference of the polymer concentration and stereochem. engineering of annihilators would readily regulate the thermal sensitivity. In addition to this study using 9,10-Dibromoanthracene, there are many other studies that have used 9,10-Dibromoanthracene(cas: 523-27-3Quality Control of 9,10-Dibromoanthracene) was used in this study.

9,10-Dibromoanthracene(cas: 523-27-3) is synthesized by the bromination of anthracene. The bromination reaction is carried out at room temperature using carbon tetrachloride as a solvent. Using 80-85% anthracene as raw material, adding bromine to react for half an hour, the yield is 83-88%.Quality Control of 9,10-Dibromoanthracene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Saikia, Rakhee; Park, Kwihwan; Masuda, Hayato; Itoh, Miki; Yamada, Tsuyoshi; Sajiki, Hironao; Mahanta, Sanjeev P.; Thakur, Ashim J.; Bora, Utpal published an article in 2021. The article was titled 《Revisiting the synthesis of aryl nitriles: a pivotal role of CAN》, and you may find the article in Organic & Biomolecular Chemistry.Synthetic Route of C7H5BrO2 The information in the text is summarized as follows:

Facilitated by the dual role of ceric ammonium nitrate (CAN), herein a cost-effective approach for the cyanation of aryl iodides/bromides with CAN-DMF as an addition to the existing pool of combined cyanation sources was reported. In addition to being an oxidant, CAN acted as a source of nitrogen in our protocol. The reaction was catalyzed by a readily available Cu(II) salt and the ability of CAN to generate ammonia in the reaction medium was utilized to eliminate the addnl. requirement of a nitrogen source, ligand, additive or toxic reagents. The mechanistic study suggested an evolution of CN- leading to the synthesis of a variety of aryl nitriles ArCN [Ar = Ph, 4-OHC6H4, 4-H2NC6H4, etc.] in moderate to good yields. The proposed mechanism was supported by a series of control reactions and labeling experiments After reading the article, we found that the author used 5-Bromobenzo[d][1,3]dioxole(cas: 2635-13-4Synthetic Route of C7H5BrO2)

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.Synthetic Route of C7H5BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Xu, Xi; Zhang, Di; Zhao, Tengteng; Wang, Min; Li, Yu; Du, Qianming; Kou, Junping; Li, Zhiyu; Bian, Jinlei published an article in 2022. The article was titled 《Novel biphenyl-based scaffold as potent and selective histone deacetylase 6 (HDAC6) inhibitors: Identification, development and pharmacological evaluation》, and you may find the article in European Journal of Medicinal Chemistry.Related Products of 76006-33-2 The information in the text is summarized as follows:

A series of novel biphenyl-based scaffold derivatives were identified as selective histone deacetylase 6 (HDAC6) inhibitors through an inhouse compound library screening approach. The biol. evaluation indicated that most of target compounds exhibited moderate to good inhibitory activity and selectivity against HDAC6. Especially, compound C10 was identified as a potent and highly selective HDACs inhibitor, with HDAC1 IC50 value of 3600 nM, HDAC6 IC50 value of 23 nM, and the HDAC1/6 selectivity index of 157. Moreover, C10 displayed robust anti-proliferative activity, induced cancer cells apoptosis, increased the level of acetylated α-tubulin and inhibited cancer cells migration in vitro. C10 showed significant antitumor efficacy (TGI: 75%) in CT26 colon carcinoma xenograft model in mice with no considerable toxicity in vivo. More importantly, C10 could also activate antitumor immunity so as to synergistically exert antitumor effects in vivo. Overall, our findings have provided a new avenue for design, development and investigation into the mechanism underlying the antitumor efficacy of selective HDAC6 inhibitors. The experimental part of the paper was very detailed, including the reaction process of 3-Bromo-2-methylbenzoic acid(cas: 76006-33-2Related Products of 76006-33-2)

3-Bromo-2-methylbenzoic acid(cas: 76006-33-2) 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. Related Products of 76006-33-2 Moreover, several studies demonstrate that the average proportion of bromine in drugs is significantly higher than that in natural products.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Zu, Yucong; Li, Jiawen; Li, Xilin; Zhao, Tongyi; Ren, Hao; Sun, Fuxing published an article in Microporous and Mesoporous Materials. The title of the article was 《Imine-linked porous aromatic frameworks based on spirobifluorene building blocks for CO2 separation》.Computed Properties of C18H12Br3N The author mentioned the following in the article:

Porous organic frameworks entirely composed of organic building blocks are attracting more and more attention owing to their tunable porosity, lightweight and hydrolytic stability. Three novel porous aromatic frameworks (PAFs) based on the [4 + 3] design strategy have been synthesized from spirobifluorene building block as square node and various triangle nodes resp. via imine condensation. These materials are all semiconductors and permanently microporous amorphous polymer with high thermal stabilities. The Brunauer-Emmett-Teller (BET) surface areas of these PAFs are between 389 and 698 m2/g. More importantly, these frameworks exhibit good CO2 uptake (4.0 mmol/g for PAF-131) and outstanding ideal adsorption selectivities for CO2/N2 (121 for PAF-131) and CO2/CH4 (327 for PAF-131) at 273 K and 1 bar, thus showing that they are good candidates for CO2 capture. After reading the article, we found that the author used Tris(4-bromophenyl)amine(cas: 4316-58-9Computed Properties of C18H12Br3N)

In other references, Tris(4-bromophenyl)amine(cas: 4316-58-9) is often used in the synthesis of porous luminescent covalent–organic polymers (COPs)Computed Properties of C18H12Br3N

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary