Category: bromides-buliding-blocks

Computed Properties of Br3InIn 2018 ,《A five-component Biginelli-Diels-Alder cascade reaction》 appeared in Frontiers in Chemistry (Lausanne, Switzerland). The author of the article were Maskrey, Taber S.; Frischling, Madeline C.; Rice, Mikhaila L.; Wipf, Peter. The article conveys some information:

A new multi-component condensation was discovered during the reaction of urea, β-keto ester and formaldehyde. In the presence of catalytic indium bromide, a Biginelli dihydropyrimidinone intermediate such as I [R1 = Et, Me, Bn; X = O, S] was further converted to a five-component condensation product such as II [R1 = Me, Et, allyl, Bn; X = O, S] through a formal hetero Diels-Alder reaction. The product structure was confirmed by NMR and NOE anal. and the proposed stepwise mechanism was supported by the reaction of the Biginelli intermediate with Et 2-methylene-3-oxobutanoate. In the part of experimental materials, we found many familiar compounds, such as Indium(III) bromide(cas: 13465-09-3Computed Properties of Br3In)

Indium(III) bromide(cas: 13465-09-3) is used in organic synthesis as a water tolerant Lewis acid. It efficiently catalyzes the three-component coupling of β-keto esters, aldehydes and urea (or thiourea) to afford the corresponding dihydropyrimidinones.Computed Properties of Br3In

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Wu, Qianqian; Li, Minghong; He, Shuanglin; Xiong, Ying; Zhang, Ping; Huang, Heyan; Chen, Lin; Huang, Fang; Li, Fei published an article in Chemical Communications (Cambridge, United Kingdom). The title of the article was 《Hangman effect boosts hydrogen production by manganese terpyridine complex》.Recommanded Product: Bromopentacarbonylmanganese(I) The author mentioned the following in the article:

The manganese terpyridine complex 1 with a coordinated carboxylate in the axial position was obtained in situ. By virtue of a hangman effect, complex 1 catalyzes electrochem. hydrogen evolution from phenol in acetonitrile solution with a turnover frequency of 525 s-1 at a low overpotential of ca. 230 mV. After reading the article, we found that the author used Bromopentacarbonylmanganese(I)(cas: 14516-54-2Recommanded Product: Bromopentacarbonylmanganese(I))

Bromopentacarbonylmanganese(I)(cas: 14516-54-2) has many other uses. It is used in the formation of (eta6-arene)tricarbonylmanganese(I) by reacting with arene (arene= hexamethyl benzene, 1,2,4,5-tetramethyl benzene, mesitylene, p-xylene and toluene) in the presence silver salt.Recommanded Product: Bromopentacarbonylmanganese(I)

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Mohamed, Mohamed Gamal; Sharma, Santosh U.; Liu, Ni-Yun; Mansoure, Tharwat Hassan; Samy, Maha Mohamed; Chaganti, Swetha V.; Chang, Yu-Lung; Lee, Jyh-Tsung; Kuo, Shiao-Wei published an article in International Journal of Molecular Sciences. The title of the article was 《Ultrastable Covalent Triazine Organic Framework Based on Anthracene Moiety as Platform for High-Performance Carbon Dioxide Adsorption and Supercapacitors》.Application In Synthesis of 9,10-Dibromoanthracene The author mentioned the following in the article:

Conductive and porous nitrogen-rich materials have great potential as supercapacitor electrode materials. The exceptional efficiency of such compounds, however, is dependent on their larger surface area and the level of nitrogen doping. To address these issues, we synthesized a porous covalent triazine framework (An-CTFs) based on 9,10-dicyanoanthracene (An-CN) units through an ionothermal reaction in the presence of different molar ratios of molten zinc chloride (ZnCl2) at 400 and 500 °C, yielding An-CTF-10-400, An-CTF-20-400, An-CTF-10-500, and An-CTF-20-500 microporous materials. According to N2 adsorption-desorption analyses (BET), these An-CTFs produced exceptionally high sp. surface areas ranging from 406-751 m2·g-1. Furthermore, An-CTF-10-500 had a capacitance of 589 F·g-1, remarkable cycle stability up to 5000 cycles, up to 95% capacity retention, and strong CO2 adsorption capacity up to 5.65 mmol·g-1 at 273 K. As a result, our An-CTFs are a good alternative for both electrochem. energy storage and CO2 uptake. In the experimental materials used by the author, we found 9,10-Dibromoanthracene(cas: 523-27-3Application In Synthesis of 9,10-Dibromoanthracene)

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%.Application In Synthesis of 9,10-Dibromoanthracene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Hess, Andreas; Alandini, Nurtalya; Guelen, Hasret C.; Prohaska, Jan P.; Knochel, Paul published an article in 2022. The article was titled 《Regioselective magnesiations of functionalized arenes and heteroarenes using TMP2Mg in hydrocarbons》, and you may find the article in Chemical Communications (Cambridge, United Kingdom).Electric Literature of C7H5BrO2 The information in the text is summarized as follows:

The preparation of a new hydrocarbon-soluble magnesium amide TMP2Mg (TMP = 2,2,6,6-tetramethylpiperidyl) was report . This base showed excellent properties for the regioselective magnesiation of various arenes and heteroarenes bearing Et esters and carbamates under very mild reaction conditions. Subsequent trapping with aryl iodides (Negishi cross-coupling) gave access to a range of highly functionalized valuable building blocks such as I [R = 2-F,6-C(O)OEt, 2-F,6-C(O)Ot-Bu, 2-C(O)OEt, etc. R1 = I, 2-thienyl, 3-MeOC6H4, etc.]. The results came from multiple reactions, including the reaction of 5-Bromobenzo[d][1,3]dioxole(cas: 2635-13-4Electric Literature 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.Electric Literature of C7H5BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Hu, Qing-Hua; Jiang, Wei; Liang, Ru-Ping; Lin, Sen; Qiu, Jian-Ding published an article in 2021. The article was titled 《Synthesis of imidazolium-based cationic organic polymer for highly efficient and selective removal of ReO-4/TcO-4》, and you may find the article in Chemical Engineering Journal (Amsterdam, Netherlands).HPLC of Formula: 623-24-5 The information in the text is summarized as follows:

Rational design of anion-scavenging materials with high selectivity and stability under high acid/base extreme conditions for removing 99TcO4- is still a significant challenge. Herein, we put forward an anion exchange strategy that utilized an imidazolium-based cationic organic polymer (named ImCOP) for efficient capture of perrhenate (ReO4-), a surrogate for TcO4- with nonradioactive. ImCOP was synthesized via the quaternization reaction using tris (4-(1H-imidazol-1-yl) phenyl) amine, a tripodal flexible ligand, and 1,4-bis (bromomethyl) benzene to forming a semi-rigid structure. ImCOP exhibited high chem. stability even under 3 M HNO3 and 3 M NaOH, which was superior to those of most materials. Attributed to the charged imidazolium moieties and tertiary amine groups that produced rich adsorption sites, ImCOP can produce electrostatic interactions with ReO4-, thereby leading to a record uptake capability (1162 mg g-1) of ReO4-. Furthermore, ImCOP exhibited high selectivity for removing ReO4- in the presence of large excess of competitive anions, which was attributed to the hydrophobic surface of ImCOP. These excellent features endowed ImCOP successfully separated ReO4- from simulated Hanford waste with a high adsorption removal of 93.4%. The excellent performance suggested ImCOP would be a promising material for TcO4-/ReO4-removal, which provided a feasible pathway for designing a high-efficiency and durable material for nuclear-related environmental remediation. The results came from multiple reactions, including the reaction of 1,4-Bis(bromomethyl)benzene(cas: 623-24-5HPLC of Formula: 623-24-5)

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. HPLC of Formula: 623-24-5 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

Recommanded Product: 3,5-DibromoanilineIn 2020 ,《Structurally Informative Isotopic Shifts in Ion Mobility Spectra for Heavier Species》 was published in Journal of the American Society for Mass Spectrometry. The article was written by Pathak, Pratima; Baird, Matthew A.; Shvartsburg, Alexandre A.. The article contains the following contents:

The isotopic mol. envelopes due to stable isotopes for most elements were a staple of mass spectrometry since its origins, often leveraged to identify and quantify compounds However, all isomers share one MS envelope. As the mol. motion in media also depends on the isotopic composition, separations such as liquid chromatog. (LC) and ion mobility spectrometry (IMS) must also feature isotopic envelopes. These were largely not observed because of limited resolution, except for the (structurally uninformative) shifts in LC upon H/D exchange. We recently found the isotopic shifts in FAIMS for small haloanilines (∼130-170 Da) to hinge on the halogen position, opening a novel route to isomer characterization. Here, we extend the capability to heavier species: dibromoanilines (DBAs, ∼250 Da) and tribromoanilines (TBAs, ∼330 Da). The 13C shifts for DBAs and TBAs vary across isomers, some changing sign. While 81Br shifts are less specific, the 2-D 13C/81Br shifts unequivocally differentiate all isomers. The trends for DBAs track those for dichloroanilines, with the 13C shift order preserved for most isomers. The peak broadening due to merged isotopomers is also isomer-specific. The absolute shifts for TBAs are smaller than those for lighter haloanilines, but differentiate isomers as well because of compressed uncertainties. These results showcase the feasibility of broadly distinguishing isomers in the more topical ∼200-300 Da range using the isotopic shifts in IMS spectra. In the experimental materials used by the author, we found 3,5-Dibromoaniline(cas: 626-40-4Recommanded Product: 3,5-Dibromoaniline)

3,5-Dibromoaniline(cas: 626-40-4) belongs to anime. In organic chemistry, amines are compounds and functional groups that contain a basic nitrogen atom with a lone pair. Amines are formally derivatives of ammonia (NH3), wherein one or more hydrogen atoms have been replaced by a substituent such as an alkyl or aryl group (these may respectively be called alkylamines and arylamines; amines in which both types of substituent are attached to one nitrogen atom may be called alkylarylamines).Recommanded Product: 3,5-Dibromoaniline

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Recommanded Product: Ethyl 4-bromobutyrateIn 2022 ,《Solvatochromic spiropyran – a facile method for visualized, sensitive and selective response of lead (Pb2+) ions in aqueous solution》 was published in Journal of Photochemistry and Photobiology, A: Chemistry. The article was written by Liu, Guojie; Li, Yiwei; Cui, Congcong; Wang, Min; Gao, He; Gao, Jun; Wang, Jingbo. The article contains the following contents:

1′-(4′-carboxybutyl) -3′, 3′-dimethyl-6-nitro-8-hydroxylspiro [chromene-2, 2′-indoline] (SPC) is a visual, selective, and sensitive detector to lead (Pb2+) ions. The presence of 8 -hydroxyl in pyran ring makes SPC have a remarkable solvatochromism in polar solvents (SPC can isomerize to the ring-opening body (Mcc) spontaneously under visible light conditions), ascribed to the formation of intramol. hydrogen bonds. The color and spectrum of the Mcc solution could be changed instantly and significantly by addition of Pb2+, and Mcc showed excellent selectivity to Pb2+ in the simulated lead-zinc ore leachate. The complex Mcc – Pb2+, with a stoichiometry ratio of 1:1, can stably exist under visible light conditions, which is attributed to the interaction between Pb2+ and the deprotonated carboxy (-COO-), phenolic oxygen atom and 8-hydroxyl of the Mcc, and the whole process does not need UV irradiation, avoiding the serious photo-degradation of spiropyran derivatives The low limit of detection (0.61 μM) and the established test strips indicate that SPC has the potential to be applied in the quant. detection of Pb2+ in real samples.Ethyl 4-bromobutyrate(cas: 2969-81-5Recommanded Product: Ethyl 4-bromobutyrate) was used in this study.

Ethyl 4-bromobutyrate(cas: 2969-81-5) belongs to bromides. One prominent application of synthetic organobromine compounds is the use of polybrominated diphenyl ethers as fire-retardants, and in fact fire-retardant manufacture is currently the major industrial use of the element bromine.Recommanded Product: Ethyl 4-bromobutyrate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Synthetic Route of C18H12Br3NIn 2020 ,《Quantifying the nitrogen effect on CO2 capture using isoporous network polymers》 appeared in Chemical Communications (Cambridge, United Kingdom). The author of the article were Nguyen, Thien S.; Yavuz, Cafer T.. The article conveys some information:

The impact of nitrogen atoms on CO2 binding was evaluated for two isostructural porous bisimidazole-linked polymers (BILPs), which serendipitously had identical surface areas and pore size distributions, a rare observation. The two structures differ only in the core of the trialdehyde component, the nitrogen atom (BILP-19) vs. benzene ring (BILP-5). Such a slight difference, however, has brought about a stronger CO2 capture capacity of BILP-19 and hence increased CO2/N2 separation capability. In addition to this study using Tris(4-bromophenyl)amine, there are many other studies that have used Tris(4-bromophenyl)amine(cas: 4316-58-9Synthetic Route of C18H12Br3N) was used in this study.

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

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Kumar, Sandeep; Gupta, Sujeet Kumar published their research in World Journal of Pharmacy and Pharmaceutical Sciences in 2021. The article was titled 《Synthesis, characterization & biological activity of some N9 -(arylidene acetylhydrazino)-carbazole novel carbazole derivative》.Application of 6630-33-7 The article contains the following contents:

Synthesized six new derivatives of carbazole I[ R = 4-Cl, 4-NO2, 3-Br] test them for their anti-inflammatory activity using the carrageenan induced inflammation model in rat paw edema model. In scheme synthesized N-(chloroacetyl)-carbazole then react with hydrazine hydrate to give N-(hydrazinoacetyl)-carbazole were further reacted with various substituted aldehyde in the presence of ethanol and dioxan and found to six derivative of carbazole I. The structure of final product were confirmed by FTIR and 1H NMR. Value of FTIR, 1H NMR and thin layer chromatog. were found to be significant. All biol. activity screening by carrageenan induced inflammation in rat hind paw edema model. The compound I[ R = 3-Cl, 2-Br] most potent compound with compared to Diclofenc.o-Bromobenzaldehyde(cas: 6630-33-7Application of 6630-33-7) was used in this study.

o-Bromobenzaldehyde(cas: 6630-33-7) is used in L-threonine aldolase-catalyzed enantio/diastereoselective aldol reactions.Application of 6630-33-7It is a key starting material in the total synthesis of an anticancer agent, (-)-taxol.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Indium controlled regioselective 1,4-alkylarylation of 1,3-dienes with α-carbonyl alkyl bromides and N-heterocycles》 was published in Chemical Communications (Cambridge, United Kingdom) in 2020. These research results belong to Gu, Chang-Cheng; Ouyang, Xuan-Hui; Song, Ren-Jie; Li, Jin-Heng. Electric Literature of Br3In The article mentions the following:

A new, selective indium-promoted silver-mediated intermol. oxidative 1,4-alkylarylation of 1,3-dienes with α-carbonyl alkyl bromides and N-heterocycles for producing functionalized N-heterocycles, which was characterized by its exquisitely controllable regio-/stereo-selectivity and excellent tolerance of functional groups was described. Mechanistically, the formation of the carbonyl-coordinated η3-allyl-In complex radical intermediate was the key factor for successfully achieving regio- and stereo-selectivity toward 1,4-difunctionalization and (E)-isomers.Indium(III) bromide(cas: 13465-09-3Electric Literature of Br3In) was used in this study.

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.Electric Literature of Br3In

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary