Category: bromides-buliding-blocks

In 2022,Abdellaoui, O.; Chraibi, M.; Skalli, M. K.; Haoudi, A.; Fikri-Benbrahim, K.; Rodi, Y. Kandri; Mazzah, A.; Senhaji, O. published an article in Asian Journal of Chemistry. The title of the article was 《Synthesis and antibacterial evaluation of three quaternary ammonium surfactants based on isatin》.Safety of 1,6-Dibromohexane The author mentioned the following in the article:

In present study, several isatin-derived quaternary ammonium surfactants I [n = 3, 6, 12] with different carbon chain lengths were designed and synthesized. They were synthesized by alkylation of indoline-2,3-dione with various dibromo-alkanes, then quaternization with trimethylamine. Further, the critical micelle concentrations (CMC) value of surfactants I synthesized was determined in an aqueous solution using elec. conductivity The synthesized surfactants I had CMC ranging from 0.01 to 0.012 mol/L. The antibacterial activity of the titer compounds I was evaluated against gram-neg. bacteria (P. aeruginosa and E. coli), as well as gram-pos. bacteria (S. aureus). The surfactant with a long hydrocarbon chain I [n = 12] showed activity against all bacteria tested (min. inhibitory concentration = 1.25-2.5 mg/mL), whereas those with a short hydrocarbon chain proved to be inactive. After reading the article, we found that the author used 1,6-Dibromohexane(cas: 629-03-8Safety of 1,6-Dibromohexane)

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.Safety of 1,6-Dibromohexane

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Wang, Lucia; Lin, Shengjia; Santos, Emmanuel; Pralat, Jenna; Spotton, Kaylyn; Sharma, Abhishek published an article in Journal of Organic Chemistry. The title of the article was 《Boron-Promoted Deprotonative Conjugate Addition: Geminal Diborons as Soft Pronucleophiles and Acyl Anion Equivalents》.Recommanded Product: 7051-34-5 The author mentioned the following in the article:

The 1,4-addition of α,α-diboryl carbanions generated via deprotonation of the corresponding geminal diborons R1CH(Bpin)2 (R1 = prop-2-en-1-yl, thiophen-3-ylmethyl, cyclopropylmethyl, etc.) has been reported. The methodol. provided a general route to highly substituted and synthetically useful γ,γ-diboryl ketones R1C(Bpin)2CH(R3)C(O)R2 (R2 = C6H5, 4-ClC6H4, cyclohexyl, etc.; R3 = Me, Ph, Et, etc.). The development of geminal diborons as soft pronucleophiles also enabled their use as acyl anion equivalent via a one-pot tandem conjugate addition-oxidation sequence. The results came from multiple reactions, including the reaction of (Bromomethyl)cyclopropane(cas: 7051-34-5Recommanded Product: 7051-34-5)

(Bromomethyl)cyclopropane(cas: 7051-34-5) is used as a synthetic building block for the introduction of the cyclopropylmethyl group. It was also used in the synthesis of 1,4-dienes via iron-catalyzed cross-coupling with alkenyl Grignard reagents.Recommanded Product: 7051-34-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Tian, Yanxin; He, Yulin; Liu, Pan; Zhang, Hui; Zheng, Qiuying; Liu, Jialiang; Xiao, Linghan; Wang, Xibin; Ao, Yuhui; Li, Ming published their research in Journal of Materials Science in 2021. The article was titled 《Mild and in situ photo-crosslinking of anthracene-functionalized poly(aryl ether ketone) for enhancing temporal stability of organic NLO materials》.Quality Control of 4-Bromobutanoic acid The article contains the following contents:

Developing a mild and efficient method to simultaneously enhance poling efficiency and temporal stability is meaningful and challenging for organic second-order nonlinear optical materials. In this paper, a new poly(aryl ether ketone) and chromophores functionalized with anthracene groups have been designed and prepared Poling and crosslinking process could be separated by the mild and photo-initiated cycloaddition of anthracene group. As the UV-Vis spectrum, DSC and TGA curves, the networks had formed by 30-min irradiation of the lower-power UV light which led little decomposition of dipolar chromophores. The maximum electro-optic coefficient (r33) of these polymers is 28.5 pm V-1 (at 1.3μm), and the order parameter reaches 0.22. Moreover, the depolarization temperature of α peak, related to the dipole relaxation, has been increased to 129°C after crosslinking, which is 17°C higher than uncrosslinked ones. All these results indicated that the photo-crosslinking of anthracene exhibited promising potential for improving alignment stability and NLO activity at the same time. After reading the article, we found that the author used 4-Bromobutanoic acid(cas: 2623-87-2Quality Control of 4-Bromobutanoic acid)

4-Bromobutanoic acid(cas: 2623-87-2) belongs to carboxylic acids. The chief chemical characteristic of the carboxylic acids is their acidity. They are generally more acidic than other organic compounds containing hydroxyl groups but are generally weaker than the familiar mineral acids (e.g., hydrochloric acid, HCl, sulfuric acid, H2SO4, etc.).Quality Control of 4-Bromobutanoic acid

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Liu, Sien; He, Bangyue; Li, Hongyi; Zhang, Xiaofeng; Shang, Yaping; Su, Weiping published their research in Chemistry – A European Journal in 2021. The article was titled 《Facile Synthesis of Alkylidene Phthalides by Rhodium-Catalyzed Domino C-H Acylation/Annulation of Benzamides with Aliphatic Carboxylic Acids》.Related Products of 76006-33-2 The article contains the following contents:

Facile synthesis of alkylidene phthalides I [R1 = H, Me, Ph, etc.; R2 = H, 3-Me, 3-Ph, etc.; R3 = H, Me, Et, etc.; R4 = Et, i-Pr, n-Bu, etc; R3R4 = CH2(CH2)2CH2, CH2(CH2)4CH2] by rhodium-catalyzed domino C-H acylation/annulation of benzamides with aliphatic carboxylic acids. The Rh-catalyzed ortho-C(sp2)-H functionalization of 8-aminoquinoline-derived benzamides with aliphatic acyl fluorides generated in situ from the corresponding acids was developed. This reaction initiated with 8-aminoquinoline-directed ortho-C(sp2)-H acylation, which was accompanied by subsequent intramol. nucleophilic acyl substitution of amide group to produce alkylidene phthalides. This approach exhibited high stereo-selectivity for Z-isomer products and tolerates a variety of functional groups as well as aliphatic carboxylic acids with diverse structural scaffolds. After reading the article, we found that the author used 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. In contrast, terrestrial plants account only for a few bromine-containing compounds.Related Products of 76006-33-2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Li, Luomo; Hilt, Gerhard published their research in Chemistry – A European Journal in 2021. The article was titled 《Indium Tribromide-Catalysed Transfer-Hydrogenation: Expanding the Scope of the Hydrogenation and of the Regiodivergent DH or HD Addition to Alkenes》.Recommanded Product: Indium(III) bromide The article contains the following contents:

The transfer-hydrogenation as well as the regioselective and regiodivergent addition of H-D from regiospecific deuterated dihydroarom. compounds to a variety of 1,1-di- and trisubstituted alkenes was realized with InBr3 in dichloro(m)ethane. In comparison with the previously reported BF3·Et2O-catalyzed process, electron-deficient aryl-substituents was applied reliably and thereby several restrictions would be lifted, and new types of substrates would be transformed successfully in hydrodeuterogenation as well as deuterohydrogenation transfer-hydrogenation reactions. The experimental process involved the reaction of Indium(III) bromide(cas: 13465-09-3Recommanded Product: Indium(III) bromide)

Indium(III) bromide(cas: 13465-09-3) is used as a catalyst to produce dithioacetals when unactivated alkynes react with thiols and fields such as optics and microelectronics that utilize semiconductor technology have wide uses for indium in high-performing solar cells.Recommanded Product: Indium(III) bromide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Deoxyfluorination of Carboxylic, Sulfonic, Phosphinic Acids and Phosphine Oxides by Perfluoroalkyl Ether Carboxylic Acids Featuring CF2O Units》 was written by Zhao, Shiyu; Guo, Yong; Su, Zhaoben; Wu, Chengying; Chen, Wei; Chen, Qing-Yun. COA of Formula: C8H15BrO2 And the article was included in Chinese Journal of Chemistry in 2021. The article conveys some information:

The synthesis of acyl fluorides RCOF [R = Br(CH2)6CH2, Ph, 1-naphthyl, etc.], sulfonyl fluorides R1SO2F [R1 = Ph, 4-MeC6H4, 4-ClC6H4, etc.] and phosphoric fluorides R2PO(F)R3 [R2 = Ph, 4-MeC6H4, 2-naphthyl, etc.; R3 = Me, F, Ph, etc.] could be realized via carbonic difluoride (COF2) generated in situ from thermal degradation of the PFECA salt. The use of potassium salts of perfluoroalkyl ether carboxylic acids (PFECA) was reported featuring CF2O units as deoxyfluorination reagents, which were generated mainly as byproducts in the manufacture of hexafluoropropene oxide (HFPO). After reading the article, we found that the author used 8-Bromooctanoic acid(cas: 17696-11-6COA of Formula: C8H15BrO2)

8-Bromooctanoic acid(cas: 17696-11-6) acid is used in the synthesis of 8-(N-Methyl-4,4′-bipyridinyl)- octanoic acid. 8-Mercaptooctanoic acid was prepared from 8-bromooctanoic acid. And 8-Bromooctanoic Acid is a useful compound for sonodynamic therapy.COA of Formula: C8H15BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Macrofilaricidal Benzimidazole-Benzoxaborole Hybrids as an Approach to the Treatment of River Blindness: Part 2. Ketone Linked Analogs》 was written by Carter, David S.; Jacobs, Robert T.; Freund, Yvonne R.; Berry, Pamela W.; Akama, Tsutomu; Easom, Eric E.; Lunde, Christopher S.; Rock, Fernando; Stefanakis, Rianna; McKerrow, James; Fischer, Chelsea; Bulman, Christina A.; Lim, Kee Chong; Suzuki, Brian M.; Tricoche, Nancy; Sakanari, Judy A.; Lustigman, Sara; Plattner, Jacob J.. Synthetic Route of C8H7BrO2 And the article was included in ACS Infectious Diseases in 2020. The article conveys some information:

The optimization of a series of benzimidazole-benzoxaborole hybrid mols. linked via a ketone that exhibit good activity against Onchocerca volvulus, a filarial nematode responsible for the disease onchocerciasis, also known as river blindness, is described. The lead identified in this series, 21 (AN15470), was found to have acceptable pharmacokinetic properties to enable an evaluation following oral dosing in an animal model of onchocerciasis. Compound 21was effective in killing worms implanted in Mongolian gerbils when dosed orally as a suspension at 100 mg/kg/day for 14 days but not when dosed orally at 100 mg/kg/day for 7 days. In the experimental materials used by the author, we found 3-Bromo-2-methylbenzoic acid(cas: 76006-33-2Synthetic Route of C8H7BrO2)

3-Bromo-2-methylbenzoic acid(cas: 76006-33-2) 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. Synthetic Route of C8H7BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Discovery of Potent and Selective Epidermal Growth Factor Receptor (EGFR) Bifunctional Small-Molecule Degraders》 was published in Journal of Medicinal Chemistry in 2020. These research results belong to Cheng, Meng; Yu, Xufen; Lu, Kaylene; Xie, Ling; Wang, Li; Meng, Fanye; Han, Xiaoran; Chen, Xian; Liu, Jing; Xiong, Yue; Jin, Jian. Recommanded Product: Ethyl 3-bromopropanoate The article mentions the following:

Several epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors have been developed and approved by Food and Drug Administration for the treatment of non-small-cell lung cancers, but their efficacy can be compromised by acquired drug resistance conferred by EGFR-mutant variants. Here, we described the discovery of a novel E3 ligase von Hippel-Lindau-recruiting EGFR degrader, MS39 (compound 6), and a first-in-class E3 ligase cereblon-recruiting EGFR degrader, MS154 (compound 10), using the proteolysis targeting chimera technol. These compounds potently induced the degradation of mutant but not wild-type EGFR in an E3 ligase-dependent manner in cancer cell lines and effectively suppressed the growth of lung cancer cells compared with the corresponding neg. controls. The global proteomic analyses revealed that the compounds were highly selective for EGFR. Furthermore, both compounds were bioavailable in mouse pharmacokinetic studies, and compound 6 is the first EGFR degrader suitable for in vivo efficacy studies. Overall, we provide a set of well-characterized chem. tools to the research community. The experimental part of the paper was very detailed, including the reaction process of Ethyl 3-bromopropanoate(cas: 539-74-2Recommanded Product: Ethyl 3-bromopropanoate)

Ethyl 3-bromopropanoate(cas: 539-74-2) belongs to organobromine compounds.Organobromine chemicals are produced naturally by an array of biological and other chemical processes in our environment. Recommanded Product: Ethyl 3-bromopropanoateSome of these compounds are identical to man-made organobromine compounds, such as methyl bromide, bromoform, and bromophenols, but many others are entirely new moleclar entities, often possessing extraordinary and important biological properties.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Stereoselective Bromoboration of Acetylene with Boron Tribromide: Preparation and Cross-Coupling Reactions of (Z)-Bromovinylboronates》 was published in Journal of Organic Chemistry in 2020. These research results belong to Polasek, Jan; Paciorek, Jan; Stosek, Jakub; Semrad, Hugo; Munzarova, Marketa; Mazal, Ctibor. Quality Control of 1-Bromo-3,4,5-trimethoxybenzene The article mentions the following:

The mechanism of acetylene bromoboration in neat boron tribromide was studied carefully by means of experiment and theory. Besides the syn-addition mechanism through a four-center transition state, radical and polar anti-addition mechanisms are postulated, both triggered by HBr, which is evidenced also to take part in the Z/E isomerization of the product. The proposed mechanism is well supported by ab initio calculations at the MP2/6-31+G* level with Ahlrichs’ SVP all-electron basis for Br. Implicit solvation in CH2Cl2 has been included using the PCM and/or SMD continuum solvent models. Comparative case studies have been performed involving the B3LYP/6-31+G* with Ahlrichs’ SVP for Br and MP2/Def2TZVPP levels. The mechanistic studies resulted in development of a procedure for stereoselective bromoboration of acetylene yielding E/Z mixtures of dibromo(bromovinyl)borane (I) with the Z-isomer as a major product (up to 85%). Transformation to the corresponding pinacol and neopentyl glycol boronates and stereoselective decomposition of their E-isomer provided pure (Z)-(2-bromovinyl)boronates in 57-60% overall yield. Their reactivity in a Negishi cross-coupling reaction was tested. An example of the one-pot reaction sequence of Negishi and Suzuki-Miyaura cross-couplings for synthesis of combretastatin A4 is also presented. After reading the article, we found that the author used 1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8Quality Control of 1-Bromo-3,4,5-trimethoxybenzene)

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.Quality Control of 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

《Catch and Anchor Approach To Combat Both Toxicity and Longevity of Botulinum Toxin A》 was published in Journal of Medicinal Chemistry in 2020. These research results belong to Lin, Lucy; Olson, Margaret E.; Sugane, Takashi; Turner, Lewis D.; Tararina, Margarita A.; Nielsen, Alexander L.; Kurbanov, Elbek K.; Pellett, Sabine; Johnson, Eric A.; Cohen, Seth M.; Allen, Karen N.; Janda, Kim D.. Reference of 8-Bromooctanoic acid The article mentions the following:

Botulinum neurotoxins have remarkable persistence (~weeks to months in cells), outlasting the small-mol. inhibitors designed to target them. To address this disconnect, inhibitors bearing two pharmacophores-a zinc binding group and a Cys-reactive warhead-were designed to leverage both affinity and reactivity. A series of first-generation bifunctional inhibitors was achieved through structure-based inhibitor design. Through X-ray crystallog., engagement of both the catalytic Zn2+ and Cys165 was confirmed. A second-generation series improved on affinity by incorporating known reversible inhibitor pharmacophores; the mechanism was confirmed by exhaustive dialysis, mass spectrometry, and in vitro evaluation against the C165S mutant. Finally, a third-generation inhibitor was shown to have good cellular activity and low toxicity. In addition to our findings, an alternative method of modeling time-dependent inhibition that simplifies assay setup and allows comparison of inhibition models is discussed. In the part of experimental materials, we found many familiar compounds, such as 8-Bromooctanoic acid(cas: 17696-11-6Reference of 8-Bromooctanoic acid)

8-Bromooctanoic acid(cas: 17696-11-6) acid is used in the synthesis of 8-(N-Methyl-4,4′-bipyridinyl)- octanoic acid. 8-Mercaptooctanoic acid was prepared from 8-bromooctanoic acid.Reference of 8-Bromooctanoic acid

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary