Category: bromides-buliding-blocks

Dow, Nathan W.; Cabre, Albert; MacMillan, David W. C. published their research in Chem in 2021. The article was titled 《A general N-alkylation platform via copper metallaphotoredox and silyl radical activation of alkyl halides》.COA of Formula: C4H7Br The article contains the following contents:

The catalytic union of amides, sulfonamides, anilines, imines, or N-heterocycles with a broad spectrum of electronically and sterically diverse alkyl bromides has been achieved via a visible-light-induced metallaphotoredox platform. The use of a halogen abstraction-radical capture (HARC) mechanism allows for room temperature coupling of C(sp3)-bromides using simple Cu(II) salts, effectively bypassing the prohibitively high barriers typically associated with thermally induced SN2 or SN1 N-alkylation. This regio- and chemoselective protocol is compatible with >10 classes of medicinally relevant N-nucleophiles, including established pharmaceutical agents, in addition to structurally diverse primary, secondary, and tertiary alkyl bromides. Furthermore, the capacity of HARC methodologies to engage conventionally inert coupling partners is highlighted via the union of N-nucleophiles with cyclopropyl bromides and unactivated alkyl chlorides, substrates that are incompatible with nucleophilic substitution pathways. Preliminary mechanistic experiments validate the dual catalytic, open-shell nature of this platform, which enables reactivity previously unattainable in traditional halide-based N-alkylation systems. The experimental process involved the reaction of (Bromomethyl)cyclopropane(cas: 7051-34-5COA of Formula: C4H7Br)

(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.COA of Formula: C4H7Br

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Remote control of mechanical forces via mitochondrial-targeted magnetic nanospinners for efficient cancer treatment》 was written by Chen, Mengwei; Wu, Jiaojiao; Ning, Peng; Wang, Jingjing; Ma, Zuan; Huang, Liqun; Plaza, Gustavo R.; Shen, Yajing; Xu, Chang; Han, Yu; Lesniak, Maciej S.; Liu, Zhongmin; Cheng, Yu. Related Products of 2623-87-2 And the article was included in Small in 2020. The article conveys some information:

In cells, mech. forces play a key role in impacting cell behaviors, including adhesion, differentiation, migration, and death. Herein, a 20 nm mitochondria-targeted zinc-doped iron oxide nanocube is designed as a nanospinner to exert mech. forces under a rotating magnetic field (RMF) at 15 Hz and 40 mT to fight against cancer. The nanospinners can efficiently target the mitochondria of cancer cells. By means of the RMF, the nanocubes assemble in alignment with the external field and produce a localized mech. force to impair the cancer cells. Both in vitro and in vivo studies show that the nanospinners can damage the cancer cells and reduce the brain tumor growth rate after the application of the RMF. This nanoplatform provides an effective magnetomech. approach to treat deep-seated tumors in a spatiotemporal fashion. The experimental process involved the reaction of 4-Bromobutanoic acid(cas: 2623-87-2Related Products of 2623-87-2)

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.).Related Products of 2623-87-2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《New zwitterionic polyurethanes containing pendant carboxyl-pyridinium with shape memory, shape reconfiguration, and self-healing properties》 was written by Xiao, Xuan; Chen, Heng; Chen, Shaojun. Computed Properties of C4H7BrO2This research focused onzwitterionic polyurethane shape memory self healing property. The article conveys some information:

In this paper, novel zwitterionic polyurethane containing pendant carboxyl-pyridinium were successfully prepared with N,N-bis(2-hydroxyethyl) isonicotinamide (BINA) and hexamethylene diisocyanate (HDI), followed by zwitterionization with 4-bromobutyric acid. The structure, morphol. and properties, including shape memory, shape reconfiguration and self-healing properties, were carefully investigated. The obtained results showed that introduction of zwitterionic units reduced glass transition temperature The shape recovery increased with increasing carboxyl zwitterion content. Finally, good shape memory properties with 99% shape memory and 99% shape recovery was achieved. Addnl., the carboxyl-pyridinium zwitterionic polyurethane had good shape reconfiguration properties, and new permanent shapes could be reconfigured easily upon heating. Moreover, the carboxyl-pyridinium zwitterionic polyurethanes possessed moisture-induced self-healing properties, where its complex structure was self-repaired in a humidity-rich environment after inevitable damage. This study opens a new door to intelligent zwitterionic polymers, which is highly significance in the field of smart biomedical. In the experiment, the researchers used 4-Bromobutanoic acid(cas: 2623-87-2Computed Properties of C4H7BrO2)

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.).Computed Properties of C4H7BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Related Products of 14516-54-2In 2020 ,《Manganese-Catalyzed Enantioselective Hydrogenation of Simple Ketones Using an Imidazole-Based Chiral PNN Tridentate Ligand》 was published in Synlett. The article was written by Ling, Fei; Chen, Jiachen; Nian, Sanfei; Hou, Huacui; Yi, Xiao; Wu, Feifei; Xu, Min; Zhong, Weihui. The article contains the following contents:

A series of Mn(I) catalysts containing imidazole-based chiral PNN tridentate ligands I (R = diphenylphosphanyl, bis(3,5-dimethylphenyl)phosphanyl, bis(propan-2-yl)phosphanyl; R1 = 1-benzyl-1H-imidazol-2-yl, 1-benzyl-1H-1,3-benzodiazol-2-yl, 1-(propan-2-yl)-1H-1,3-benzodiazol-2-yl, etc.) with controllable ‘side arm’ groups have been established, enabling the inexpensive base-promoted asym. hydrogenation of simple ketones R2C(O)R3 (R2 = naphthalen-2-yl, 9H-fluoren-1-yl, benzofuran-2-yl, etc.; R3 = Me, cyclohexyl, propan-2-yl, etc.) and 1,2,3,4-tetrahydronaphthalen-1-one with outstanding activities (up to 8200 TON) and good enantioselectivities (up to 88.5% ee). This protocol features wide substrate scope and functional group tolerance, thereby providing easy access to a key intermediate of crizotinib. The experimental part of the paper was very detailed, including the reaction process of Bromopentacarbonylmanganese(I)(cas: 14516-54-2Related Products of 14516-54-2)

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.Related Products of 14516-54-2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Wang, Weijie; An, Ruiqi; Wang, Tong; Li, Hongxiang; Zhang, Jidong; Tian, Hongkun; Wu, Xiaofu; Tong, Hui; Wang, Lixiang published an article in Giant. The title of the article was 《Nitrogen-bridged star-shaped fused-ring electron acceptors for organic solar cells》.Synthetic Route of C4H2Br2S The author mentioned the following in the article:

Two kinds of nitrogen-bridged star-shaped fused-ring electron acceptors based on benzo[1,2-b:3,4-b′-5,6-b””]tri(4-H-dithieno[3,2-b:2′,3′-d]pyrrole) (BTDTP) core with linear and branched alkyl side chains on bridging nitrogen atoms are developed. Both electron acceptors exhibit strong intramol. charge transfer absorption bands at 500-800 nm (molar extinction coefficient of 3.0 x 105 M-1 cm-1) with narrow optical bandgaps around 1.58 eV, but reveal different mol. packing and morphol. Compared to acceptor with linear side chains, the acceptor bearing branched side chains exhibits ordered face-on orientation with tight π-π stacking, as well as more favorable phase separation morphol. and balanced charge transport when blended with polymer donor PM6. Organic solar cell device based on acceptors bearing branched side chains achieves a power conversion efficiency (PCE) of 9.95% with a fill factor of 74.98% and a short-circuit c.d. of 14.90 mA cm-2, which is much superior to the device using acceptors bearing linear side chains (a PCE of 6.74%). The experimental process involved the reaction of 2,5-Dibromothiophene(cas: 3141-27-3Synthetic Route of C4H2Br2S)

2,5-Dibromothiophene(cas: 3141-27-3) , is mainly used as pharmaceutical intermediate and synthesis intermediate. 2,5-Dibromothiophene may be used as starting reagent for the synthesis of α,α′-didecylquater-, -quinque- and -sexi-thiophenes.Synthetic Route of C4H2Br2S

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Li, Ping; Lee, Boon Chong; Zhang, Xiaoxiang; Koh, Ming Joo published an article in 2022. The article was titled 《Base-Mediated Site-Selective Hydroamination of Alkenes》, and you may find the article in Synthesis.Application In Synthesis of Ethyltriphenylphosphonium bromide The information in the text is summarized as follows:

A base-mediated hydroamination protocol, using substoichiometric amounts of a hydrosilane and potassium tert-butoxide, that operates under mild conditions at 30° is presented. Many aryl- and heteroatom-substituted olefins as well as arylamines are tolerated, affording the desired products with complete regioselectivity. Preliminary mechanistic investigations reveal a non-radical pathway for hydroamination. A sequential remote hydroamination strategy involving an initial Fe-catalyzed olefin isomerization followed by the base-mediated hydroamination was also developed to directly access β-arylamines from terminal aliphatic alkenes. In addition to this study using Ethyltriphenylphosphonium bromide, there are many other studies that have used Ethyltriphenylphosphonium bromide(cas: 1530-32-1Application In Synthesis of Ethyltriphenylphosphonium bromide) was used in this study.

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. It is also used as catalysts in the synthesis of certain organic compounds and as a pharmaceutical intermediate.Application In Synthesis of Ethyltriphenylphosphonium bromide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

He, Xiaohui; Zou, Jianhua; Guo, Yan; Wang, Kai; Wu, Bin; Wen, Yufei; Zang, Xiujing; Chen, Defu published their research in Polymer in 2021. The article was titled 《Synthesis of halogenated benzonorbornadiene monomer and preparation of self-crosslinking bisimidazole cationic functionalized benzonorbornadiene triblock copolymer anion exchange membrane》.Synthetic Route of C6H12Br2 The article contains the following contents:

In this paper, a series of anion exchange membranes of bisimidazolium functionalized triblock copolymers were synthesized by ring-opening metathesis polymerization of alkyl bromide functionalized benzonorbornadiene derivatives, 1,2-di-Me imidazole and epoxy functionalized norbornene under the action of Grubbs 2nd catalyst. The designed decomposition temperature of the triblock copolymer anion exchange membrane (AEM) exceeded 320 °C, which was much higher than the actual working temperature of anion exchange membrane fuel cell. TEM and AFM characterization proved that the AEM had formed an obvious microphase separation structure. The OH- conductivity of AEM-40 at 80 °C was as high as 56.09 mS cm-1. The single cell performance of the prepared AEM was tested at 60 °C, and we found that AEM-40 reached the highest power d. of 189.1 mW cm-2 at 352.1 mA cm-2. The experimental part of the paper was very detailed, including the reaction process of 1,6-Dibromohexane(cas: 629-03-8Synthetic Route 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.Synthetic Route of C6H12Br2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《Optical detection of fe3+ ions in aqueous solution with high selectivity and sensitivity by using sulfasalazine functionalized microgels》 were Ji, Weiming; Zhu, Zumei; Dong, Shunni; Nie, Jingjing; Du, Binyang. And the article was published in Sensors in 2019. Recommanded Product: 1,6-Dibromohexane The author mentioned the following in the article:

A highly selective and sensitive optical sensor was developed to colorimetric detect trace Fe3+ ions in aqueous solution The sensor was the sulfasalazine (SSZ) functionalized microgels (SSZ-MGs), which were fabricated via in-situ quaternization reaction. The obtained SSZ-MGs had hydrodynamic radius of about 259 ± 24 nm with uniform size distribution at 25°C. The SSZ-MG aqueous suspensions can selectively and sensitively response to Fe3+ ions in aqueous solution at 25°C and pH of 5.6, which can be quantified by UV-visible spectroscopy and also easily distinguished by the naked eye. Job’s plot indicated that the molar binding ratio of SSZ moiety in SSZ-MGs to Fe3+ was close to 1:1 with an apparent association constant of 1.72 x 104 M-1. A linear range of 0-12μM with the detection limit of 0.110μM (0.006 mg/L) was found. The obtained detection limit was much lower than the maximum allowance level of Fe3+ ions in drinking water (0.3 mg/L) regulated by the Environmental Protection Agency (EPA) of the United States. The existence of 19 other species of metal ions, namely, Ag+, Li+, Na+, K+, Ca2+, Ba2+, Cu2+, Ni2+, Mn2+, Pb2+, Zn2+, Cd2+, Co2+, Cr3+, Yb3+, La3+, Gd3+, Ce3+-, and Bi3+, did not interfere with the detection of Fe3+ ions. In the experimental materials used by the author, we found 1,6-Dibromohexane(cas: 629-03-8Recommanded Product: 1,6-Dibromohexane)

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.Recommanded Product: 1,6-Dibromohexane

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,Synlett included an article by Cao, Hongen; Chen, Tian; Yang, Chenggen; Ye, Jianqing; Zhang, Xu. SDS of cas: 586-76-5. The article was titled 《Diphenyl Diselenide Catalyzed Oxidative Degradation of Benzoin to Benzoic Acid》. The information in the text is summarized as follows:

The di-Ph diselenide catalyzed oxidative degradation of benzoins RC(O)CH(OH)R (R = Ph, 4-tolyl, benzyl, etc.) to benzoic acids RCOOH has been reported. As this reaction can convert the malodorous compound into an odorless and innocuous product under mild conditions, it might be useful for pollutant disposal. The reaction does not require a transition-metal catalyst or a chem. oxidant, so that it can be performed at low cost and without generation of wastes. This is believed to be the first example of the use of organoselenium catalysis technol. in pollutant destruction, thereby expanding its range of applications. In the experiment, the researchers used many compounds, for example, 4-Bromobenzoic acid(cas: 586-76-5SDS of cas: 586-76-5)

4-Bromobenzoic acid(cas: 586-76-5) has been used in bromine-specific detection of the metabolites of 2-,3-and 4-bromobenzoic acid in the urine and bile of rats by inductively coupled plasma mass spectrometry.SDS of cas: 586-76-5 It was used to study the metabolic fate of 2-,3-and 4-bromo benzoic acids in rat hepatocytes incubation using high temperature liquid chromatography.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Recommanded Product: 4-Bromobenzoic acidIn 2021 ,《DEAD-Mediated Oxidative Ugi/Aza-Wittig Reaction for the Synthesis of 5-(1,2,3,4-Tetrahydroisoquinolin-1-yl)-1,3,4-oxadiazoles Starting from (N-Isocyanimine)triphenylphosphorane》 was published in Synthesis. The article was written by Sun, Mei; Zhao, Long; Yu, Yan-Ling; Ding, Ming-Wu. The article contains the following contents:

A one-pot protocol for the synthesis of 5-(1,2,3,4-tetrahydroisoquinolin-1-yl)-1,3,4-oxadiazoles I [R1 = Me, i-Pr, 4-MeC6H4, etc.; R2 = H, 6,7-di-MeO; Ar = Ph, 4-MeC6H4, 2-ClC6H4, 4-BrC6H4] via DEAD-mediated oxidative Ugi/aza-Wittig reaction was developed. The reaction of (N-isocyanimine)triphenylphosphorane, carboxylic acids and N-aryl-1,2,3,4-tetrahydroisoquinolines produced polysubstituted 5-(1,2,3,4-tetrahydroisoquinolin-1-yl)-1,3,4-oxadiazoles directly in good yields in the presence of DEAD as an oxidant. In the experimental materials used by the author, we found 4-Bromobenzoic acid(cas: 586-76-5Recommanded Product: 4-Bromobenzoic acid)

4-Bromobenzoic acid(cas: 586-76-5) has been used to study the metabolic fate of 2-,3-and 4-bromo benzoic acids in rat hepatocytes incubation using high temperature liquid chromatography. It was used in bromine-specific detection of the metabolites of 2-,3-and 4-bromobenzoic acid in the urine and bile of rats by inductively coupled plasma mass spectrometry.Recommanded Product: 4-Bromobenzoic acid

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary