Category: bromides-buliding-blocks

《Fluorescence detection of metabolic activity of the fatty acid beta oxidation pathway in living cells》 was written by Uchinomiya, Shohei; Matsunaga, Naoya; Kamoda, Koichiro; Kawagoe, Ryosuke; Tsuruta, Akito; Ohdo, Shigehiro; Ojida, Akio. Application In Synthesis of 8-Bromooctanoic acid And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2020. The article conveys some information:

Detection of metabolic activity in living cells facilitates the understanding of the cell mechanism. Here, the authors report a fluorescent probe that can detect fatty acid beta oxidation (FAO) in living cells. This probe is metabolically degraded by the sequential enzyme reactions of FAO and can visualize the FAO activity with turn-on fluorescence. After reading the article, we found that the author used 8-Bromooctanoic acid(cas: 17696-11-6Application In Synthesis 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. And 8-Bromooctanoic Acid is a useful compound for sonodynamic therapy.Application In Synthesis of 8-Bromooctanoic acid

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,Chemical Communications (Cambridge, United Kingdom) included an article by Kawano, Shin-ichiro; Kawada, Sae; Kitagawa, Yasutaka; Teramoto, Rena; Nakano, Masayoshi; Tanaka, Kentaro. Quality Control of 3,6-Dibromo-9H-carbazole. The article was titled 《Near-infrared absorption by intramolecular charge-transfer transition in 5,10,15,20-tetra(N-carbazolyl)porphyrin through protonation》. The information in the text is summarized as follows:

A porphyrin coupled quadruply with N-carbazolyl groups at the meso positions was synthesized. Because of the electron-withdrawing nature of the carbazole units at the porphyrin center, the tetra(N-carbazolyl)porphyrin and the protonated derivative display unique absorption bands derived from intramol. charge-transfer transition from the carbazoles to the porphyrin moiety. After reading the article, we found that the author used 3,6-Dibromo-9H-carbazole(cas: 6825-20-3Quality Control of 3,6-Dibromo-9H-carbazole)

3,6-Dibromo-9H-carbazole(cas: 6825-20-3) is used as a pharmaceutical intermediate, and also an important intermediate of synthesizing optoelectronic materials. It has been used as a reagent in the synthesis of P7C3-A20 which is a potent neuroprotective agent.Quality Control of 3,6-Dibromo-9H-carbazole

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2016,Kosikowska, Paulina; Bochno, Marta; Macegoniuk, Katarzyna; Forlani, Giuseppe; Kafarski, Pawel; Berlicki, Lukasz published 《Bisphosphonic acids as effective inhibitors of Mycobacterium tuberculosis glutamine synthetase》.Journal of Enzyme Inhibition and Medicinal Chemistry published the findings.Synthetic Route of C6H5Br2N The information in the text is summarized as follows:

Inhibition of glutamine synthetase (GS) is one of the most promising strategies for the discovery of novel drugs against tuberculosis. Forty-three bisphosphonic and bis-H-phosphinic acids of various scaffolds, bearing aromatic substituents, were screened against recombinant GS from Mycobacterium tuberculosis. Most of the studied compounds exhibited activities in micromolar range, with N-(3,5-dichlorophenyl)-2-aminoethylidenebisphoshonic acid, N-(3,5-difluorophenyl)-2-aminoethylidene-bisphoshonic acid, and N-(3,4-dichlorophenyl)-1-hydroxy-1,1-ethanebisphosphonic acid showing the highest potency with kinetic parameters similar to the reference compound, L-methionine-S-sulfoximine. Moreover, these inhibitors were found to be much more effective against the pathogenic enzyme than against the human ortholog. Thus, with the bone-targeting properties of the bisphosphonate compounds in mind, this activity/selectivity profile makes these compounds attractive agents for the treatment of bone tuberculosis. The experimental process involved the reaction of 3,5-Dibromoaniline(cas: 626-40-4Synthetic Route of C6H5Br2N)

3,5-Dibromoaniline(cas: 626-40-4) belongs to anime. Examples of direct uses of amines and their salts are as corrosion inhibitors in boilers and in lubricating oils (morpholine), as antioxidants for rubber and roofing asphalt (diarylamines), as stabilizers for cellulose nitrate explosives (diphenylamine), as protectants against damage from gamma radiation (diarylamines), as developers in photography (aromatic diamines), as flotation agents in mining, as anticling and waterproofing agents for textiles, as fabric softeners, in paper coating, and for solubilizing herbicides.Synthetic Route of C6H5Br2N

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《A three-component difunctionalization of N-alkenyl amides via organophotoredox radical-polar crossover》 were Dhungana, Roshan K.; Granados, Albert; Sharique, Mohammed; Majhi, Jadab; Molander, Gary A.. And the article was published in Chemical Communications (Cambridge, United Kingdom) in 2022. Application of 401-55-8 The author mentioned the following in the article:

Herein, a three-component organophotoredox coupling of N-alkenyl amides I [R1 = Me, R2 = H, Me; R1R2 = (CH2)3, (CH2)5; R3 = H, Me] with α-bromocarbonyls II (R4 = F, Me; R5 = EtO, Et2N) and various nucleophiles NuH (Nu = OH, 4-ClC6H4S, 2-pyrimidinylthio, EtO, N3, etc.) to give the corresponding compounds III is reported. This transition metal-free difunctionalization protocol installs sequential C-C and C-Y (Y = S/O/N) bonds in alkenes. This reaction works with terminal and internal alkenes containing both cyclic and acyclic amides via radical-polar crossover. In the experiment, the researchers used many compounds, for example, Ethylbromofluoroacetate(cas: 401-55-8Application of 401-55-8)

Ethylbromofluoroacetate(cas: 401-55-8) is a member of organofluorine compounds. Organofluorine compounds, which have carbon-fluorine bonds, show unique features such as high thermal and chemical stability, high surface activity, no light-absorbing ability, high pharmacological effect, and so on. Owing to their specific characters, they are indispensable chemicals for industry and our daily lives.Application of 401-55-8

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2004,Chemical Communications (Cambridge, United Kingdom) included an article by Moss, Rebecca J.; Wadsworth, Kelly J.; Chapman, Christopher J.; Frost, Christopher G.. Formula: C6H4BBrF3K. The article was titled 《Rhodium-catalyzed tandem conjugate addition-protonation: an enantioselective synthesis of 2-substituted succinic esters》. The information in the text is summarized as follows:

The rhodium-catalyzed addition of potassium trifluoro(organo)borates to di-Me itaconate generated an intermediate complex which on protonation provided enantioenriched succinic esters, e.g., I. After reading the article, we found that the author used potassium (3-bromophenyl)trifluoroborate(cas: 374564-34-8Formula: C6H4BBrF3K)

potassium (3-bromophenyl)trifluoroborate(cas: 374564-34-8) 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. Formula: C6H4BBrF3K

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Formula: C6H12Br2In 2022 ,《A cationic BODIPY photosensitizer decorated with quaternary ammonium for high-efficiency photodynamic inhibition of bacterial growth》 appeared in Journal of Materials Chemistry B: Materials for Biology and Medicine. The author of the article were Wang, Hongyu; Li, Chaonan; Wu, Qihang; Wen, Hui; Sun, Tingting; Xie, Zhigang. The article conveys some information:

On account of the constant evolution of antibiotic-resistant bacteria, the effects of existing antibacterial materials are being gradually weakened, and the difficulty in curing infectious diseases is increasing. Therefore, more novel antibacterial materials or methods are eagerly required to combat microbial infections. Recently, the advantages of photodynamic therapy in the antibacterial field have gradually been validated. Herein, a trimethylamine (TMA) salt-modified 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) photosensitizer (BODIPY-TMA) was synthesized for antibacterial applications. Due to the pos. charge of the TMA group, enhanced interactions were observed between the prepared BODIPY-TMA nanoparticles (BODIPY-TMA NPs) and neg.-charged bacterial membranes. The BODIPY-TMA NPs showed much better antibacterial effect toward both S. aureus and E. coli compared with their BODIPY-Br NPs counterpart without a pos. charge. Moreover, the BODIPY-TMA NPs efficiently prevented the formation of biofilms and destroyed pre-established biofilms. Thus, such pos.-charged photosensitizers may pave the way for the exploration of highly effective antibacterial agents.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

In 2019,Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy included an article by Liu, Ji-lin; Xu, Chun-ling; Yang, Ting; Hu, Zhi-ru; Zhang, Zhi-quan; Feng, Guo-dong. Reference of Ethyl 4-bromobutyrate. The article was titled 《Developed a novel sensor based on fluorescent graft conjugated polymer for the determination of aristolochic acid in traditional Chinese medicine》. The information in the text is summarized as follows:

A novel fluorescent graft conjugated polymer (poly (2, 5-bis (Polyethylene glycol oxybutyrate)-1, 4-phenylethynylene-alt-1, 4-phenyleneethynylene, PPE-OB-PEG)) has been designed and synthesized for the determination of aristolochic acid (AA). The detection conditions and detection characters of PPE-OB-PEG were systematically explored in this work. The fluorescence intensity of PPE-OB-PEG changes with the different concentration of AA. PPE-OB-PEG has a good linear range towards AA from 1.00×10-7 to 8.00×10-5 mol L-1 and the limit of detection (LOD) is 3.00×10-8 mol L-1 (S/N = 3). PPE-OB-PEG have been applied to detect AA in traditional Chinese medicine samples and the results are satisfactory. The exptl. results show that PPE-OB-PEG can be used as a fluorescence probe for rapid and sensitive detection of AA. In addition to this study using Ethyl 4-bromobutyrate, there are many other studies that have used Ethyl 4-bromobutyrate(cas: 2969-81-5Reference of Ethyl 4-bromobutyrate) was used in this study.

Ethyl 4-bromobutyrate(cas: 2969-81-5) 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 Ethyl 4-bromobutyrate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 1970,Zhurnal Prikladnoi Khimii (Sankt-Peterburg, Russian Federation) included an article by Sharnin, G. P.; Moisak, I. E.; Gryazin, E. E.. Quality Control of 3,3”,5,5”-Tetrabromo-5′-(3,5-dibromophenyl)-1,1′:3′,1”-terphenyl. The article was titled 《Synthesis of 1,3,5,-triphenylbenzene derivatives with fixed position of the functional groups》. The information in the text is summarized as follows:

PhCOMe and 9 acetophenones containing electron-withdrawing substituents in the meta and para positions are self-condensed, by using a K2S2O7-H2SO4 mixture, to the corresponding 1,3,5-triphenylbenzene derivatives in 21-75% yield after 6-10 hr at 80-180°. However, 3-HO-, 3-NH2-, 2-NO2-, and 2-ClC6H4COMe resinify under these conditions. The experimental process involved the reaction of 3,3”,5,5”-Tetrabromo-5′-(3,5-dibromophenyl)-1,1′:3′,1”-terphenyl(cas: 29102-67-8Quality Control of 3,3”,5,5”-Tetrabromo-5′-(3,5-dibromophenyl)-1,1′:3′,1”-terphenyl)

3,3”,5,5”-Tetrabromo-5′-(3,5-dibromophenyl)-1,1′:3′,1”-terphenyl(cas: 29102-67-8) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. The most pervasive is the naturally produced bromomethane.Quality Control of 3,3”,5,5”-Tetrabromo-5′-(3,5-dibromophenyl)-1,1′:3′,1”-terphenyl

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2017,Rodriguez Castanon, Jesus; Sano, Natsuhiro; Shiotsuki, Masashi; Sanda, Fumio published 《Synthesis of poly(1-chloro-2-arylacetylene)s with high cis-content and examination of their absorption/emission properties》.Journal of Polymer Science, Part A: Polymer Chemistry published the findings.Safety of 1-Bromo-2-isopropylbenzene The information in the text is summarized as follows:

A series of 1-chloro-2-arylacetylenes [Cl-CC-Ar, Ar = C6H5 (1), C6H4-p-iPr (2), C6H4-p-OiPr (3), C6H4-p-NHC(O)OtBu (4), and C6H4-o-iPr (5)] were polymerized using (tBu3P)PdMeCl/silver trifluoromethanesulfonate (AgOTf) and MoCl5/SnBu4 catalysts. The corresponding polymers [poly(1)-poly(5)] with weight-average mol. weights of 6500-690,000 were obtained in 10-91% yields. THF-insoluble parts, presumably high-mol. weight polymers, were formed together with THF-soluble polymers by the Pd-catalyzed polymerization The Pd catalyst polymerized nonpolar monomers 1 and 2 to give the polymers in yields lower than the Mo catalyst, while the Pd catalyst polymerized polar monomers 3 and 4 to give the corresponding polymers in higher yields. The 1H NMR and UV-vis absorption spectra of the polymers indicated that the cis-contents of the Pd-based polymers were higher than those of the Mo-based polymers, and the conjugation length of the Pd-based polymers was shorter than that of the Mo-based polymers. Pd-based poly(5) emitted fluorescence most strongly among poly(1)-poly(5). © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym.Chem. 2016. In the experiment, the researchers used 1-Bromo-2-isopropylbenzene(cas: 7073-94-1Safety of 1-Bromo-2-isopropylbenzene)

1-Bromo-2-isopropylbenzene(cas: 7073-94-1) belongs to organobromine compounds.The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. Safety of 1-Bromo-2-isopropylbenzene The principal reactions for organobromides include dehydrobromination, Grignard reactions, reductive coupling, and nucleophilic substitution.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Application In Synthesis of Ethyltriphenylphosphonium bromideIn 2022 ,《Regio-regular and cross-conjugated poly(thienylene vinylene)s through acyclic diene metathesis》 appeared in Journal of Polymer Science (Hoboken, NJ, United States). The author of the article were Bader, Yousef M. Katba; Guan, Chao; Qin, Yang. The article conveys some information:

Poly(thienylene vinylene)s (PTV’s) are early examples of conjugated polymers but have not been extensively studied when compared with closely analogous polythiophenes. PTV’s synthesized through previously reported techniques are similar in structures that contain various alkyl or alkoxy side-chains that exert limited impact on the polymer electronic properties. Herein, we report the preparation of a series of regio-regular PTV’s (rr-PTV’s) bearing cross-conjugated side-chains through ADMET polymerization of a common brominated di(thienylene vinylene) (DTV) monomer followed by PPM reactions on the resulting brominated PTV. These new polymers contain a bulky silyloxy alkyl side-chain and a functionalized thiophene moiety on every main-chain thiophene unit, and their regio-regular placement is confirmed by NMR spectroscopy. The thienyl based side-groups broaden polymer absorption ranges and at the same time lead to uncommon emission properties that are results of light-induced charge transfer events between the polymer main-chains and side-chains. Removal of the silyl groups on one of these rr-PTV’s led to insoluble materials and x-ray diffraction experiments on the collected solids displayed distinct scattering peaks that are absent from similarly functionalized regio-random PTV’s reported previously, thus suggesting better crystallinity originated from regio-regularity. In the experiment, the researchers used Ethyltriphenylphosphonium bromide(cas: 1530-32-1Application In Synthesis of Ethyltriphenylphosphonium bromide)

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. CatOnium ETPB is also used as catalysts in the synthesis of certain organic compounds.Application In Synthesis of Ethyltriphenylphosphonium bromide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary