Month: October 2022

Kopf, Sara; Neumann, Helfried; Beller, Matthias published their research in Chemical Communications (Cambridge, United Kingdom) in 2021. The article was titled 《Manganese-catalyzed selective C-H activation and deuteration by means of a catalytic transient directing group strategy》.Name: Bromopentacarbonylmanganese(I) The article contains the following contents:

A novel manganese-catalyzed C-H activation methodol. for selective hydrogen isotope exchange of benzaldehydes was presented. Using D2O as a cheap and convenient source of deuterium, the reaction proceeded with excellent functional group tolerance. High ortho-selectivity was achieved in the presence of catalytic amounts of specific amines, which in situ form a transient directing group. The results came from multiple reactions, including the reaction of Bromopentacarbonylmanganese(I)(cas: 14516-54-2Name: 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.Name: Bromopentacarbonylmanganese(I)

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Yu, Shaoze; Shen, Guosong; He, Faqian; Yang, Xiaoyu published an article in Chemical Communications (Cambridge, United Kingdom). The title of the article was 《Asymmetric synthesis of planar-chiral macrocycles via organocatalyzed enantioselective macrocyclization》.Application of 17696-11-6 The author mentioned the following in the article:

A novel enantioselective macrocyclization method was developed for the asym. synthesis of planar-chiral macrocycles I [R1 = Br, C≡Ccyclopropyl, C≡CPh, etc.; R2 = Me, Et; R3 = Piv, C(O)CMe2Et; n = 0, 1, 2, 3, 4] through chiral phosphoric acid-catalyzed intramol. addition of the hydroxy group with the allenamide moiety. A series of planar-chiral macrocycles bearing various ring sizes (18-member to 22-member) and various functional groups were generated with good to high enantioselectivities. In the part of experimental materials, we found many familiar compounds, such as 8-Bromooctanoic acid(cas: 17696-11-6Application of 17696-11-6)

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.Application of 17696-11-6

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Product Details of 626-40-4In 2018 ,《Dynamic or undynamic chirality generated by helical arrangement of a shape-persistent ring and rod doubly bridged in a molecule》 was published in Chemical Communications (Cambridge, United Kingdom). The article was written by Katoono, Ryo; Obara, Yudai; Kusaka, Keiichi; Suzuki, Takanori. The article contains the following contents:

We synthesized mol. assemblies of a ring and rod that were covalently bound in a mol. The bridged components were helically arranged in a threaded or unthreaded form to show unique chiroptical properties based on shape-persistent m-phenylacetylene rings with six, five and four units and phenylene-ethynylene rods. After reading the article, we found that the author used 3,5-Dibromoaniline(cas: 626-40-4Product Details of 626-40-4)

3,5-Dibromoaniline(cas: 626-40-4) belongs to anime.Typically the presence of an amine functional group is deduced by a combination of techniques, including mass spectrometry as well as NMR and IR spectroscopies. 1H NMR signals for amines disappear upon treatment of the sample with D2O. In their infrared spectrum primary amines exhibit two N-H bands, whereas secondary amines exhibit only one.Product Details of 626-40-4

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Low-energy regeneration and high productivity in a lanthanide-hexacarboxylate framework for high-pressure CO2-CH4-H2 separation》 was published in Chemical Communications (Cambridge, United Kingdom) in 2013. These research results belong to He, Yabing; Furukawa, Hiroyasu; Wu, Chuande; O’Keeffe, Michael; Krishna, Rajamani; Chen, Banglin. Category: bromides-buliding-blocks The article mentions the following:

A porous lanthanide-organic framework UTSA-62a of a jjt-a topol. has been synthesized from a hexacarboxylate and structurally characterized, exhibiting significant potential for use in CO2-CH4-H2 separation (H2 purification) processes with high productivities and low regeneration costs when operating at high pressure and room temperature In the experimental materials used by the author, we found 3,3”,5,5”-Tetrabromo-5′-(3,5-dibromophenyl)-1,1′:3′,1”-terphenyl(cas: 29102-67-8Category: bromides-buliding-blocks)

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.Category: bromides-buliding-blocks The most pervasive is the naturally produced bromomethane.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Optimization of an innovative vinylimidazole-based monolithic stationary phase and its use for pressured capillary electrochromatography》 was written by Murauer, Adele; Bakry, Rania; Partl, Gabriel; Huck, Christian W.; Ganzera, Markus. Electric Literature of C6H12Br2This research focused onvinylimidazole monolithic stationary phase pressured capillary electrochromatog; Caffeine; Capillary electrochromatography; Cationic monolith; Methylxanthines; Stationary phase optimization; Vinylimidazole. The article conveys some information:

A novel polymer monolith based on the dicationic crosslinker 3,3′-(hexane-1,6-diyl)bis(1-vinylimidazolium) bromide, the monomer 1-vinylimidazole and a ternary porogen mixture (1-propanol, decan-1-ol and water) was developed and optimized for capillary electrochromatog. This aim was accomplished by adjusting the composition of individual constituents in the polymerization mixture and monitored based on several relevant parameters (e.g. pore structure by SEM, generation of electroosmotic flow, or permeability of material). The ultimately selected composition yielded a monolithic phase which excellently resolved six methylxanthines (including caffeine, theobromine and theophylline) in 15 min. Key requirements concerning the used buffer were an acidic pH of 3 and the addition of 50% acetonitrile; addnl., a neg. voltage (-25 kV) had to be applied during analyses. The proposed separation mechanism was mixed mode, i.e. the combination of electrostatic repulsion and hydrophobic interaction. Monolith fabrication as well as separation efficiency are highly repeatable, the material was mech. stable and useable for at least 150 injections. Thus the presented stationary phase is definitely a very promising option for CEC. In the part of experimental materials, we found many familiar compounds, such as 1,6-Dibromohexane(cas: 629-03-8Electric Literature of C6H12Br2)

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 pyrrolo-tetrathiafulvalene molecular bridge (6PTTF6) to study redox switching behavior of single molecules; synthesis of water-soluble thermoresponsive polylactides.Electric Literature of C6H12Br2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Palladium(II)-Catalyzed C-H Bond Arylation of Electron-Deficient Arenes at Room Temperature》 was published in Angewandte Chemie, International Edition in 2011. These research results belong to Tredwell, Matthew J.; Gulias, Moises; Gaunt Bremeyer, Nadine; Johansson, Carin C. C.; Collins, Beatrice S. L.; Gaunt, Matthew J.. Computed Properties of C6H4BBrF3K The article mentions the following:

Herein, we report that the C-H bond arylation of benzaldimines with aryl-BF3K salts can be catalyzed by Pd(OAc)2 at room temperature The mild reaction conditions enable the functionalization of substrates displaying sensitive functionality. E.g., arylation of (E)-benzaldimine I with PhBF3K gave 82% II. Benzaldimine I could be phenylated to II in good yield using benzene as a source of the aryl group. The results came from multiple reactions, including the reaction of potassium (3-bromophenyl)trifluoroborate(cas: 374564-34-8Computed Properties of 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. Computed Properties of C6H4BBrF3K

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2010,Kumar, C. Kishor; Kumar, H. Vijay; Vijaya Kumar, Giriyapura R.; Naik, Nagaraja published 《3-Oxoisoindoline-5-carboxamides. Synthesis and their antioxidant activity studies》.Journal of Pharmaceutical Science & Technology published the findings.Application of 76006-33-2 The information in the text is summarized as follows:

3-Oxoisoindoline-5-carboxamides were synthesized from 3-oxoisoindoline-5-carboxylate. The synthesized compounds were evaluated for their antioxidant properties using 1,1-diphenyl-2-picrylhydrazine (DPPH) free radical scavenging assay and inhibition of human low-d. lipoprotein (LDL) oxidation assay. The results showed that all 3-oxoisoindoline-5-carboxamides possessed antioxidant activity. Among the synthesized analogous, one compound showed dominant activity. In the experiment, the researchers used 3-Bromo-2-methylbenzoic acid(cas: 76006-33-2Application of 76006-33-2)

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. Application of 76006-33-2 Alkyl bromides are mainly used as alkylating agents and also find application as a solvent to extract oil from seeds and wool.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《A light-responsive liposomal agent for MRI contrast enhancement and monitoring of cargo delivery》 were Reessing, F.; Stuart, M. C. A.; Samplonius, D. F.; Dierckx, R. A. J. O.; Feringa, B. L.; Helfrich, W.; Szymanski, W.. And the article was published in Chemical Communications (Cambridge, United Kingdom) in 2019. Safety of 4-Bromobutanoic acid The author mentioned the following in the article:

Medical magnetic resonance imaging (MRI) produces high-resolution anatomical images of the human body, but has limited capacity to provide useful mol. information. The light-responsive, liposomal MRI contrast agent described herein could be used to provide an intrinsic theranostic aspect to MRI and enable tracking the distribution and cargo release of drug delivery systems upon light-triggered activation. After reading the article, we found that the author used 4-Bromobutanoic acid(cas: 2623-87-2Safety 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.).Safety of 4-Bromobutanoic acid

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《Fabrication of nor-seco-cucurbit[10]uril based supramolecular polymers via self-sorting》 were Yang, Yuchong; Ni, Xin-Long; Xu, Jiang-Fei; Zhang, Xi. And the article was published in Chemical Communications (Cambridge, United Kingdom) in 2019. Computed Properties of C8H8Br2 The author mentioned the following in the article:

A nor-seco-CB[10] (ns-CB[10]) based linear supramol. polymer is firstly fabricated via self-sorting strategy. Through self-sorting of the monomer, ns-CB[10] and CB[7], the unfavorable factors for supramol. polymerization are avoided. Therefore, supramol. polymer with high mol. weight is successfully fabricated, and the mol. weight can be controllably regulated. The experimental part of the paper was very detailed, including the reaction process of 1,4-Bis(bromomethyl)benzene(cas: 623-24-5Computed Properties of C8H8Br2)

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) 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. Computed Properties of C8H8Br2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Building a smart surface with converse temperature-dependent wettability based on poly(acrylamide-co-acrylonitrile)》 was published in Chemical Communications (Cambridge, United Kingdom) in 2020. These research results belong to Chen, Longbin; Yang, Tao; Niu, Yue; Mu, Xin; Gong, Yelei; Feng, Yancong; de Rooij, Nicolaas Frans; Wang, Yao; Li, Hao; Zhou, Guofu. Quality Control of 1,4-Bis(bromomethyl)benzene The article mentions the following:

A smart surface with converse temperature-dependent (CTD) wettability was fabricated from an upper critical solution temperature-type (UCST-type) poly(acrylamide-co-acrylonitrile) (P(AAm-co-AN)) copolymer. The obtained surface exhibits a remarkable and reversible hydrophobic-hydrophilic transition depending on temperature with a high response rate. The static water contact angle of the surface decreases from 103° ± 2° to 60° ± 1° as the temperature increases from 30°C to 80°C. Further, the wettability of the UCST-type surface shows a pos. linear relationship between wettability and temperature This study for the first time provides an UCST-type smart surface with wettability that decreases by over 35° as the temperature increases by only 20°C. In the experiment, the researchers used 1,4-Bis(bromomethyl)benzene(cas: 623-24-5Quality Control of 1,4-Bis(bromomethyl)benzene)

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals.Quality Control of 1,4-Bis(bromomethyl)benzene Organobromine compounds have fallen under increased scrutiny for their environmental impact.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary