Category: bromides-buliding-blocks

Qiu, Shaotong; Gao, Xiang; Zhu, Shifa published their research in Chemical Science in 2021. The article was titled 《Dirhodium(II)-catalysed cycloisomerization of azaenyne: rapid assembly of centrally and axially chiral isoindazole frameworks》.Computed Properties of C4H7Br The article contains the following contents:

A dirhodium(II)-catalyzed asym. cycloisomerization reaction of azaenynes through a cap-tether synergistic modulation strategy, which represents the first catalytic asym. cycloisomerization of azaenynes. This reaction is highly challenging because of its inherent strong background reaction leading to racemate formation and the high capability of coordination of the nitrogen atom resulting in catalyst deactivation. Varieties of centrally chiral isoindazole derivatives was prepared in up to 99 : 1 d.r., 99 : 1 er and 99% yield and diverse enantiomerically enriched atropisomers bearing two five-membered heteroaryls was accessed by using an oxidative central-to-axial chirality transfer strategy. The tethered nitrogen atom incorporated into the starting materials enabled easy late-modifications of the centrally and axially chiral products via C-H functionalizations, which further demonstrated the appealing synthetic utilities of this powerful asym. cyclization.(Bromomethyl)cyclopropane(cas: 7051-34-5Computed Properties of C4H7Br) was used in this study.

(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.Computed Properties of C4H7Br

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Sarkar, Koushik; Das, Kuhali; Kundu, Abhishek; Adhikari, Debashis; Maji, Biplab published their research in ACS Catalysis in 2021. The article was titled 《Phosphine-Free Manganese Catalyst Enables Selective Transfer Hydrogenation of Nitriles to Primary and Secondary Amines Using Ammonia-Borane》.Formula: C5BrMnO5 The article contains the following contents:

The synthesis of primary amines RCH2NH2HCl [R = Ph, 2-phenylethyl, (1-oxo-1,3-dihydro-2-benzofuran-5-yl)methyl, etc.], 2,2′-(1,4-phenylene)bis(ethan-1-aminium) chloride, hexane-1,6-diaminium chloride sym. and unsym. secondary amines RCH2NHCH2R and RCH2NHR1 (R1 = pyridin-2-ylmethyl, cyclohexyl, n-Bu, etc.) by hydrogenation of nitriles RCN, 1,4-benzenediacetonitrile and hexanedinitrile, employing a borrowing hydrogenation strategy was reported. A class of phosphine-free manganese (I) complexes I [R2 = thiophen-2-yl, [2-(methylsulfanyl)phenyl]methyl, (2-methoxyphenyl)methyl, furan-2-yl] bearing sulfur side arms catalyzed the reaction under mild reaction conditions, where ammonia-borane is used as the source of hydrogen. The synthetic protocol is chemodivergent, as the final product is either primary or secondary amine, which can be controlled by changing the catalyst structure and the polarity of the reaction medium. The significant advantage of this method is that the protocol operates without externally added base or other additives as well as obviates the use of high-pressure dihydrogen gas required for other nitrile hydrogenation reactions. Utilizing this method, a wide variety of primary and sym. and asym. secondary amines were synthesized in high yields. A mechanistic study involving kinetic experiments and high-level DFT computations revealed that both outer-sphere dehydrogenation and inner-sphere hydrogenation were predominantly operative in the catalytic cycle. The experimental process involved the reaction of Bromopentacarbonylmanganese(I)(cas: 14516-54-2Formula: C5BrMnO5)

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.Formula: C5BrMnO5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,ChemPhysChem included an article by Urner, Leonhard H.; Schade, Boris; Schulze, Maiko; Folmert, Kristin; Haag, Rainer; Pagel, Kevin. Electric Literature of C4H7BrO2. The article was titled 《Switchable Solubility of Azobenzene-Based Bolaamphiphiles》. The information in the text is summarized as follows:

The ability to design amphiphiles with predictable solubility properties is of everlasting interest in supramol. chem. Relevant structural parameters include the hydrophobic-hydrophilic balance and structural flexibility. In this work, we investigate the water solubility of azobenzene-based triglycerol bolaamphiphiles (TGBAs). In particular, we analyzed the structural effects of backbone hydrophobicity, flexibility, and cis/trans isomerization on the water solubility of a subset of five TGBAs. This leads to the first example of a non-ionic bolaamphiphile whose water solubility can be changed by irradiation with light. The underlying kinetics were monitored using liquid chromatog. and a closer anal. of the underlying aggregation processes provides a mechanistic understanding of the light-driven dissolution process. We anticipate that the results obtained will help to engineer bolaamphiphiles with predictable solution properties in the future. In addition to this study using 4-Bromobutanoic acid, there are many other studies that have used 4-Bromobutanoic acid(cas: 2623-87-2Electric Literature of C4H7BrO2) was used in this study.

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.).Electric Literature of C4H7BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2018,Nishimoto, Yoshihiro; Yi, Junyi; Takata, Tatsuaki; Baba, Akio; Yasuda, Makoto published 《Regio- and stereoselective allylindation of alkynes using InBr3 and allylic silanes: synthesis, characterization, and application of 1,4-dienylindiums toward skipped dienes》.Molecules published the findings.Electric Literature of Br3In The information in the text is summarized as follows:

Regioselective anti-allylindation of alkynes was achieved using InBr3 and allylic silanes. Various types of alkynes and allylic silanes were applicable to the present allylindation. This sequential process used the generated 1,4-dienylindiums to establish novel synthetic methods for skipped dienes. The 1,4-dienylindiums were characterized by spectral anal. and treated with I2 to stereoselectively give 1-iodo-1,4-dienes. The Pd-catalyzed cross coupling of 1,4-dienylindium with iodobenzene successfully proceeded in a one-pot manner to afford the corresponding 1-aryl-1,4-diene. In the experiment, the researchers used Indium(III) bromide(cas: 13465-09-3Electric Literature 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.Electric Literature of Br3In

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2018,Novikova, Daria S.; Grigoreva, Tatyana A.; Zolotarev, Andrey A.; Garabadzhiu, Alexander V.; Tribulovich, Vyacheslav G. published 《Advanced palladium free approach to the synthesis of substituted alkene oxindoles via aluminum-promoted Knoevenagel reaction》.RSC Advances published the findings.Recommanded Product: Methyl 3-(bromomethyl)benzoate The information in the text is summarized as follows:

A synthetic route for the synthesis of (E)-3-((3-((4-Chlorophenyl)(phenyl)methylene)-2-oxoindolin-1-yl)methyl)benzoic acid (I), as well as for the design of focused libraries of direct AMP-activated protein kinase (AMPK) activators was developed based on a convergent strategy. The proposed scheme corresponded to the current trends in C-H bond functionalization. The use of aluminum isopropoxide as catalyst for synthesis of substituted indolinones II [R1 = H, 4-Cl, 4-OMe, etc.; R2 = H, Me, Ph, etc.; stereo = E, Z] via Knoevenagel condensation of oxindole with benzophenones was a noticeable point of this work.Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8Recommanded Product: Methyl 3-(bromomethyl)benzoate) was used in this study.

Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8) 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. Recommanded Product: Methyl 3-(bromomethyl)benzoate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2018,Hu, Xiao-Qiang; Hu, Zhiyong; Zhang, Guodong; Sivendran, Nardana; Goossen, Lukas J. published 《Catalytic C-N and C-H Bond Activation: ortho-Allylation of Benzoic Acids with Allyl Amines》.Organic Letters published the findings.Recommanded Product: 76006-33-2 The information in the text is summarized as follows:

A facile insertion of ruthenium into aromatic C-H and allylic C-N bonds are the key steps in a [Ru(p-cymene)Cl2]2-catalyzed ortho-C-H allylation of benzoic acids. This protocol allows drawing on the large pool of allylic amines for state-of-the-art ortho-functionalizations of arenes I (R = 2-Et, 2-F, 3-Me, etc.), turning neutral amines into leaving groups. Concise syntheses of biol. active compounds provide further evidence of the synthetic potential of this methodol. In the experimental materials used by the author, we found 3-Bromo-2-methylbenzoic acid(cas: 76006-33-2Recommanded Product: 76006-33-2)

3-Bromo-2-methylbenzoic acid(cas: 76006-33-2) belongs to organobromine compounds.Organobromine chemicals are produced naturally by an array of biological and other chemical processes in our environment. Recommanded Product: 76006-33-2Some 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

In 2017,Yamada, Takeshi; Miki, Shouta; Ul’Husna, Anisa; Michikawa, Akiko; Nakatani, Kazuhiko published 《Synthesis of Naphthyridine Carbamate Dimer (NCD) Derivatives Modified with Alkanethiol and Binding Properties of G-G Mismatch DNA》.Organic Letters published the findings.Product Details of 3395-91-3 The information in the text is summarized as follows:

Bis(naphthyridinecarbamates) of (mercaptoalkyl)dipropanolamines were prepared as thiol-containing DNA-binding compounds selective for G-G mismatches; in the presence of the G-G mismatch, the compounds undergo dimerization to form DNA complexes of the corresponding disulfides. The disulfide dimers of the naphthyridinecarbamates of (mercaptoalkyl)dipropanolamines produced 1:1 complexes with the dsDNA 5′-TCAACGGTTGA-3′:3′-AGTTGGCAACT-5′ with improved thermal stability and with higher pos. cooperativities than the corresponding thiols. The dimerization of bis(naphthyridinecarbamate) of a (mercaptoalkyl)dipropanolamine was selectively accelerated in the presence of CGG repeat DNA but not on CAG repeat DNA. In the experiment, the researchers used Methyl 3-bromopropanoate(cas: 3395-91-3Product Details of 3395-91-3)

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.Product Details of 3395-91-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2016,Serkov, I. V.; Proshin, A. N.; Ustinov, A. K.; Bachurin, S. O. published 《Nitroxyethylamides of carbazolecarboxylic acids》.Doklady Chemistry published the findings.Quality Control of Methyl 3-bromopropanoate The information in the text is summarized as follows:

A method of synthesis of carbazole-derived hybrid compounds containing nitroxy group as an NO-producing fragment was developed, the compounds were of interest as a base for designing potential remedies for the treatment of neurodegenerative diseases. In the experimental materials used by the author, we found Methyl 3-bromopropanoate(cas: 3395-91-3Quality Control of 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.Quality Control of Methyl 3-bromopropanoate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Li, Yan-Jun; Sasabe, Hisahiro; Su, Shi-Jian; Tanaka, Daisaku; Takeda, Takashi; Pu, Yong-Jin; Kido, Junji published an article on February 5 ,2010. The article was titled 《Highly efficient green phosphorescent OLED based on pyridine-containing starburst electron-transporting materials》, and you may find the article in Chemistry Letters.SDS of cas: 29102-67-8 The information in the text is summarized as follows:

Starburst materials, 1,3,5-tris[3,5-bis(pyrid-4-yl)phenyl]benzene (1a) and 1,3,5-tris[3,5-bis(pyrid-3-yl)phenyl]benzene (1b) were designed and synthesized. By using fac-tris(2-phenylpyridyl)iridium(III) [Ir(ppy)3] as a green emitter and 1 as an electron-transporting material, a green organic LED (OLED) was fabricated. The OLED exhibited a maximum power efficiency (PE) of 96 lm W-1 with an external quantum efficiency (EQE) of 23% at 2.1 cd m-2, and a PE of 75 lm W-1 with an EQE of 23% at 100 cd m-2. In addition to this study using 3,3”,5,5”-Tetrabromo-5′-(3,5-dibromophenyl)-1,1′:3′,1”-terphenyl, there are many other studies that have used 3,3”,5,5”-Tetrabromo-5′-(3,5-dibromophenyl)-1,1′:3′,1”-terphenyl(cas: 29102-67-8SDS of cas: 29102-67-8) was used in this study.

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.SDS of cas: 29102-67-8 The most pervasive is the naturally produced bromomethane.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Brem, Jurgen; Panduwawala, Tharindi; Hansen, Jon Ulf; Hewitt, Joanne; Liepins, Edgars; Donets, Pawel; Espina, Laura; Farley, Alistair J. M.; Shubin, Kirill; Campillos, Gonzalo Gomez; Kiuru, Paula; Shishodia, Shifali; Krahn, Daniel; Lesniak, Robert K.; Schmidt, Juliane; Calvopina, Karina; Turrientes, Maria-Carmen; Kavanagh, Madeline E.; Lubriks, Dmitrijs; Hinchliffe, Philip; Langley, Gareth W.; Aboklaish, Ali F.; Eneroth, Anders; Backlund, Maria; Baran, Andrei G.; Nielsen, Elisabet I.; Speake, Michael; Kuka, Janis; Robinson, John; Grinberga, Solveiga; Robinson, Lindsay; McDonough, Michael A.; Rydzik, Anna M.; Leissing, Thomas M.; Jimenez-Castellanos, Juan Carlos; Avison, Matthew B.; Da Silva Pinto, Solange; Pannifer, Andrew D.; Martjuga, Marina; Widlake, Emma; Priede, Martins; Hopkins Navratilova, Iva; Gniadkowski, Marek; Belfrage, Anna Karin; Brandt, Peter; Yli-Kauhaluoma, Jari; Bacque, Eric; Page, Malcolm G. P.; Bjorkling, Fredrik; Tyrrell, Jonathan M.; Spencer, James; Lang, Pauline A.; Baranczewski, Pawel; Canton, Rafael; McElroy, Stuart P.; Jones, Philip S.; Baquero, Fernando; Suna, Edgars; Morrison, Angus; Walsh, Timothy R.; Schofield, Christopher J. published an article on January 31 ,2022. The article was titled 《Imitation of β-lactam binding enables broad-spectrum metallo-β-lactamase inhibitors》, and you may find the article in Nature Chemistry.Formula: C7H5Br2F The information in the text is summarized as follows:

Carbapenems are vital antibiotics, but their efficacy is increasingly compromised by metallo-β-lactamases (MBLs). Here we report the discovery and optimization of potent broad-spectrum MBL inhibitors. A high-throughput screen for NDM-1 inhibitors identified indole-2-carboxylates (InCs) as potential β-lactamase stable β-lactam mimics. Subsequent structure-activity relationship studies revealed InCs as a new class of potent MBL inhibitor, active against all MBL classes of major clin. relevance. Crystallog. studies revealed a binding mode of the InCs to MBLs that, in some regards, mimics that predicted for intact carbapenems, including with respect to maintenance of the Zn(II)-bound hydroxyl, and in other regards mimics binding observed in MBL-carbapenem product complexes. InCs restore carbapenem activity against multiple drug-resistant Gram-neg. bacteria and have a low frequency of resistance. InCs also have a good in vivo safety profile, and when combined with meropenem show a strong in vivo efficacy in peritonitis and thigh mouse infection models. [graphic not available: see fulltext] The experimental part of the paper was very detailed, including the reaction process of 4-Bromo-1-(bromomethyl)-2-fluorobenzene(cas: 76283-09-5Formula: C7H5Br2F)

4-Bromo-1-(bromomethyl)-2-fluorobenzene(cas: 76283-09-5) 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. Formula: C7H5Br2F 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