Category: bromides-buliding-blocks

Abdul-Amir, R. M.; Al-Hassan, N. M. Abdu; Ghadban, H. published their research in Journal of Physics: Conference Series in 2021. The article was titled 《Synthesis of some new heterocyclic compounds derived from p-chlorobenzoylchloride and investigation of biological effectiveness》.Formula: C7H5BrO The article contains the following contents:

1,3-Oxazole-5-one blends I [R = 2-Cl, 3-O2N, 2-Br] were set up by cyclization of compound {[(4-chlorophenyl)carbonyl]amino}acetic acid with aromatic aldehyde auxiliaries. The starting compound {[(4-chlorophenyl)carbonyl]amino}acetic acid was expeditiously procured by the reaction of 4-chlorobenzoylchloride with aminoacetic acid. Blends I were changed over into a grouping of subordinates by the reaction with ethylenediamine to masterminded II [R1 = 2-Cl, 3-O2N, 2-Br; R2 = H2N] which then on reaction with aromatic aldehyde subsidiaries form organized II [R1 = 2-Cl, 3-O2N, 2-Br; R2 = (2-chlorophenyl)methyleneamino, (3-nitrophenyl)methyleneamino, (2-bromophenyl)methyleneamino]. Each new compound was depicted by proton at. attractive reverberation (1H-NMR), Fourier changes IR spectroscopy (FTIR) and UV spectroscopy. In addition to this study using o-Bromobenzaldehyde, there are many other studies that have used o-Bromobenzaldehyde(cas: 6630-33-7Formula: C7H5BrO) was used in this study.

o-Bromobenzaldehyde(cas: 6630-33-7) is used in L-threonine aldolase-catalyzed enantio/diastereoselective aldol reactions.Formula: 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

Espina-Casado, Jorge; Fernandez-Gonzalez, Alfonso; Diaz-Garcia, Marta E.; Badia-Laino, Rosana published their research in Sensors and Actuators, B: Chemical in 2021. The article was titled 《Smart carbon dots as chemosensor for control of water contamination in organic media》.Name: Methyl 3-bromopropanoate The article contains the following contents:

A novel nanoprobe was synthesized by functionalizing gluthatione/citric acid-carbon dots (CDs) with a benzo-isoquinolin-based mol., Me 3-(4-(2-(5-((methylsulfonyl)oxy)pentyl)-1,3-dioxo-2,3-dihydro-1H-benzo[de]isoquinolin-6-yl)piperazin-1-yl)propanoate (water chemosensor, WCS), to detect trace amounts of water in non-aqueous media via on-off fluorescence. The design and synthesis of the free mol. WCS and the functionalized nanoprobe (CD-WCS) are described in detail and as well as their full characterization by different spectroscopic methods. WCS was found to be an excellent indicator of pH in aqueous media and exhibited, in solvents of different polarity, solvatochromic behavior. On the other hand, the modified fluorescence intensity of CD-WCS was found to be an excellent indicator for water in non-aqueous media (organic solvents and oil-based lubricants). In these media, CD-WCS showed weak fluorescence intensity due to a photoinduced electron transfer (PET) process. Sequential addition of trace amount of water led to revival of CD-WCS fluorescence intensity. The fluorescence on-off mechanisms are proposed for WCS in aqueous media as well as for CD-WCS in non-aqueous media. The anal. performance characteristics of CD-WCS showed a limit of detection for water of 0.00021% (volume/volume) in toluene and 0.00014% volume/volume in base-oil lubricant. The potential application of CD-WCS as chemosensor of water contamination in oil-based lubricants as well as green anti-wear/anti-friction lubricant additive are outlined. The experimental part of the paper was very detailed, including the reaction process of Methyl 3-bromopropanoate(cas: 3395-91-3Name: 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.Name: Methyl 3-bromopropanoate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Song, Xianghai; Zhang, Xinyu; Wang, Mei; Li, Xin; Zhu, Zhi; Huo, Pengwei; Yan, Yongsheng published their research in Journal of Colloid and Interface Science in 2021. The article was titled 《Fabricating intramolecular donor-acceptor system via covalent bonding of carbazole to carbon nitride for excellent photocatalytic performance towards CO2 conversion》.Recommanded Product: 3,6-Dibromo-9H-carbazole The article contains the following contents:

Photocatalytic conversion of CO2 into hydrocarbon fuels is an ideal technol. of mitigating greenhouse effect caused by excessive emission of CO2. However, the high recombination rate of electron-hole pairs and limited charge carriers transport speed constrained the catalytic performance of many semiconductor catalysts. In this contribution, a series of carbon nitride (g-CN) samples with intramol. donor-acceptor (D-A) system were successfully prepared by introducing organic donor into their structures. Characterization results confirmed that carbazole was successful connected to the structure of g-CN via chem. bond. The formation of intramol. D-A system greatly enlarged the light response region of g-CN-xDbc. In addition, a new charge transfer transition mode was formed in g-CN-0.01Dbc due to the incorporation carbazole, which enable it to use light with energy lower than the intrinsic absorption of g-CN. Meanwhile, the D-A structure led to the spatial separation of electrons and holes in g-CN-xDbc and significantly decreased the recombination rate of electron-hole pairs. The g-CN-0.01Dbc presented the best catalytic performance and the CO evolution rate was 9.6 times higher than that of g-CN. Moreover, the reaction was performed in water without any additive, which made it green and sustainable. DFT simulation confirmed the D-A structure and charge carrier migration direction in the prepared samples. After reading the article, we found that the author used 3,6-Dibromo-9H-carbazole(cas: 6825-20-3Recommanded Product: 3,6-Dibromo-9H-carbazole)

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.Recommanded Product: 3,6-Dibromo-9H-carbazole

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Baiula, Monica; Cirillo, Martina; Martelli, Giulia; Giraldi, Valentina; Gasparini, Elisa; Anelli, Alessandro Claudio; Spampinato, Santi Mario; Giacomini, Daria published their research in ACS Pharmacology & Translational Science in 2021. The article was titled 《Selective Integrin Ligands Promote Cell Internalization of the Antineoplastic Agent Fluorouracil》.Recommanded Product: 5437-45-6 The article contains the following contents:

Drug conjugates consisting of an antineoplastic drug and a targeting receptor ligand could be effective to overcome the heavy side effects of unselective anticancer agents. To address this need, we report here the results of a project aimed to study agonist and antagonist integrin ligands as targeting head of mol. cargoes for the selective delivery of 5-fluorouracil (5-FU) to cancer or noncancer cells. Initially, two fluorescent β-lactam-based integrin ligands were synthesized and tested for an effective and selective internalization mediated by α4β1 or α5β1 integrins in Jurkat and K562 cells, resp. No cellular uptake was observed for both fluorescent compounds in HEK293 noncancerous control cells. Afterward, three conjugates composed of the β-lactam-based integrin ligand, suitable linkers, and 5-FU were realized. The best compound E (I), acting as α5β1 integrin agonist, is able to selectively deliver 5-FU into tumor cells, successfully leading to cancer cell death. The results came from multiple reactions, including 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

Park, Sangshin; Kwon, Hyukmin; Kang, Seokwoo; Park, Sunwoo; Jung, Hyocheol; Lee, Seungeun; Park, Jongwook published their research in Journal of Nanoscience and Nanotechnology in 2021. The article was titled 《Synthesis and electroluminescence property of anthracene green fluorescent derivatives based on optimized side groups》.Computed Properties of C14H8Br2 The article contains the following contents:

As new green fluorescent emitters, anthracenes I [R = 3-Me, 4-Me] were synthesized and the properties were evaluated. In solution state, photoluminescence (PL) maximum wavelength was 517 nm for I [R = 3-Me] and 529 nm for I [R = 4-Me] . In electroluminescence (EL) spectra, EL maximum wavelength of I [R = 3-Me] was 518 nm and I [R = 4-Me] was 533 nm. The doped device using I [R = 3-Me] as green fluorescent dopant exhibited current efficiency (CE) of 17.41 cd/A and external quantum efficiency (EQE) of 7.41%. The doped device with I [R = 4-Me] was optimized in order to achieve a green OLED with high efficiency. After reading the article, we found that the author used 9,10-Dibromoanthracene(cas: 523-27-3Computed Properties of C14H8Br2)

9,10-Dibromoanthracene(cas: 523-27-3) can be sublimated and oxidized to generate anthraquinone. Soluble in hot benzene and hot toluene, slightly soluble in alcohol, ether and cold benzene, insoluble in water.Computed Properties of C14H8Br2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Erdogan, Merve; Kilic, Burcu; Sagkan, Rahsan Ilikci; Aksakal, Fatma; Ercetin, Tugba; Gulcan, Hayrettin O.; Dogruer, Deniz S. published their research in European Journal of Medicinal Chemistry in 2021. The article was titled 《Design, synthesis and biological evaluation of new benzoxazolone/benzothiazolone derivatives as multi-target agents against Alzheimer’s disease》.Recommanded Product: 14660-52-7 The article contains the following contents:

In this study, four series of compounds I [R = N(Me)(Bn), N(CH2)2CH(Ph)(CH2)2, N(CH2)2N(Bn)(CH2)2, etc.; X = O, S], II [n = 2,3] and III with benzoxazolone and benzothiazolone cores were designed, synthesized and evaluated as multifunctional agents against Alzheimer’s disease (AD). Addnl., in order to shed light on the effect of the carbonyl groups of benzoxazolone/benzothiazolone, benzoxazole/benzothiazole-containing analogs were also synthesized and evaluated. Inhibition potency of all final compounds towards cholinesterase enzymes and their antioxidant activity were tested. Subsequently, the anti-inflammatory activity, cytotoxicity, apoptosis, and Aβ aggregation inhibition tests were also performed for selected compounds The results indicated that compounds II [R = N(CH2)2CH(Ph)(CH2)2, X = S, n = 3] and III [R = N(CH2)2CH(Ph)(CH2)2, X = S] were considered as promising multi-functional agents for further investigation against AD. The reversibility, kinetic and mol. docking studies were also performed for the compounds with the highest AChE III [R = N(CH2)2CH(Ph)(CH2)2, X = S] and BChE II [R = N(CH2)2CH(Ph)(CH2)2, X = S, n = 3] inhibitory activities.Ethyl 5-bromovalerate(cas: 14660-52-7Recommanded Product: 14660-52-7) was used in this study.

Ethyl 5-bromovalerate(cas: 14660-52-7) 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.Recommanded Product: 14660-52-7

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Design, synthesis and biological evaluation of novel hybrids of N-aryl pyrrothine-base α-pyrone as bacterial RNA polymerase inhibitors》 was published in Bioorganic & Medicinal Chemistry Letters in 2020. These research results belong to Tan, Xiangduan; Huang, Mohan; Nian, Siyun; Peng, Yanfen; Qin, Jianli; Kong, Bo; Duan, Xiaoqun. Category: bromides-buliding-blocks The article mentions the following:

Antibiotic resistance in bacteria has been an emerging public health problem, thus discovery of novel and effective antibiotics is urgent. A series of novel hybrids of N-aryl pyrrothine-base α-pyrone hybrids was designed, synthesized and evaluated as bacterial RNA polymerase (RNAP) inhibitors. Among them, compound I exhibited potent antibacterial activity against antibiotic-resistant S. aureus with the min. inhibitory concentration (MIC) in the range of 1-4μg/mL. Moreover, compound I exhibited strong inhibitory activity against E. coli RNAP with an IC50 value of 16.06μM, and cytotoxicity in HepG2 cells with IC50 value of 7.04μM. The mol. docking study further suggested that compound I binds to the switch region of bacterial RNAP. In summary, compound I is a novel bacterial RNAP inhibitor, and a promising lead compound for further optimization. In the part of experimental materials, we found many familiar compounds, such as Ethyl 5-bromovalerate(cas: 14660-52-7Category: bromides-buliding-blocks)

Ethyl 5-bromovalerate(cas: 14660-52-7) 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.Category: bromides-buliding-blocks

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Anisotropic Poisson Effect and Deformation-Induced Fluorescence Change of Elastic 9,10-Dibromoanthracene Single Crystals》 was published in Angewandte Chemie, International Edition in 2020. These research results belong to Hayashi, Shotaro; Ishiwari, Fumitaka; Fukushima, Takanori; Mikage, Shohei; Imamura, Yutaka; Tashiro, Motomichi; Katouda, Michio. Application of 523-27-3 The article mentions the following:

Elastic organic crystals have attracted considerable attention as next-generation flexible smart materials. However, the detailed information on both mol. packing change and macroscopic mech. crystal deformations upon applied stress is still insufficient. Herein, we report that fluorescent single crystals of 9,10-dibromoanthracene are elastically bendable and stretchable, which allows a detailed investigation of the deformation behavior. We clearly observed a Poisson effect for the crystal, where the short axes (b and c-axes) of the crystal are contracted upon elongation along the long axis (a-axis). Moreover, we found that the Poisson’s ratios along the b-axis and c-axis are largely different. Theor. mol. simulation suggests that the tilting motion of the anthracene may be responsible for the large deformation along the c-axis. Spatially resolved photoluminescence (PL) measurement of the bent elastic crystals reveals that the PL spectra at the outer (elongated), central (neutral), and inner (contracted) sides are different from each other. The experimental process involved the reaction of 9,10-Dibromoanthracene(cas: 523-27-3Application of 523-27-3)

9,10-Dibromoanthracene(cas: 523-27-3) can be sublimated and oxidized to generate anthraquinone. Soluble in hot benzene and hot toluene, slightly soluble in alcohol, ether and cold benzene, insoluble in water.Application of 523-27-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《A novel finding of nalbuphine-6-glucuronide, an active opiate metabolite, possessing potent antinociceptive effects: Synthesis and biological evaluation》 were Liang, Ren-Jong; Lai, Yen-Hsun; Kao, Yu-Ting; Yang, Ting-Hsuan; Chen, Yen-Lun; Wang, Hong-Jaan. And the article was published in European Journal of Medicinal Chemistry in 2019. Related Products of 21085-72-3 The author mentioned the following in the article:

Nalbuphine, a partial agonist/antagonist opioid analgesic, is structurally related to morphine. It is equipotent to morphine and has no serious side effects. In the past few decades, studies focusing on morphine metabolism have indicated that one of its sugar-conjugated metabolites, morphine-6-glucuronide, exerts a higher analgesic effect than its parent drug. Considering that nalbuphine is a morphine analog that follows a similar metabolic scheme, nalbuphine glucuronides were synthesized in this study and their potential analgesic effects were assessed. Nalbuphine-3-glucuronide (N3G) and nalbuphine-6-glucuronide (N6G) were synthesized based on Schmidt’s glycosylation with OPiv protections on the glycosyl donor. In a pharmacodynamic study, paw pressure and cold-ethanol tail-flick tests were conducted in rats to evaluate the analgesic response after intracisternal and i.p. administrations of nalbuphine, N3G, or N6G. The antinociceptive response was evaluated for each compound by calculating the area under the curve and the duration spent at greater than 50% maximum possible analgesia. In conclusion, intracisternal administration of N6G exhibited a stronger analgesic response than nalbuphine in the pain tests after both cold and mech. stimuli, but N3G had no obvious effect. Similar to that of morphine, the glucuronide metabolite of nalbuphine at the 6-O-position exerted at least three-fold higher antinociceptive potency and five-fold longer analgesic duration than nalbuphine. In the experiment, the researchers used (2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate(cas: 21085-72-3Related Products of 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.Related Products of 21085-72-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《Palladium-Catalyzed Construction of Quaternary Stereocenters by Enantioselective Arylation of γ-Lactams with Aryl Chlorides and Bromides》 were Jette, Carina I.; Geibel, Irina; Bachman, Shoshana; Hayashi, Masaki; Sakurai, Shunya; Shimizu, Hideki; Morgan, Jeremy B.; Stoltz, Brian M.. And the article was published in Angewandte Chemie, International Edition in 2019. Synthetic Route of C7H4BrF3 The author mentioned the following in the article:

The first Pd-catalyzed enantioselective arylation of α-substituted γ-lactams were reported. Two sets of conditions were developed for this transformation, allowing for the use of either aryl chlorides or bromides as electrophiles. Utilizing a highly electron-rich dialkylphosphine ligand, α-quaternary centers in good yields (up to 91% yield) and high enantioselectivities (up to 97% ee) was constructed.1-Bromo-4-(trifluoromethyl)benzene(cas: 402-43-7Synthetic Route of C7H4BrF3) 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. Synthetic Route of C7H4BrF3 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