Tag: 200-300

Henke, Wade C.; Kerr, Tyler A.; Sheridan, Thomas R.; Henling, Lawrence M.; Takase, Michael K.; Day, Victor W.; Gray, Harry B.; Blakemore, James D. published their research in Dalton Transactions in 2021. The article was titled 《Synthesis, structural studies, and redox chemistry of bimetallic [Mn(CO)3] and [Re(CO)3] complexes》.SDS of cas: 14516-54-2 The article contains the following contents:

Manganese ([Mn(CO)3]) and rhenium tricarbonyl ([Re(CO)3]) complexes represent a workhorse family of compounds with applications in a variety of fields. Here, the coordination, structural, and electrochem. properties of a family of mono- and bimetallic [Mn(CO)3] and [Re(CO)3] complexes are explored. In particular, a novel heterobimetallic complex featuring both [Mn(CO)3] and [Re(CO)3] units supported by 2,2′-bipyrimidine (bpm) has been synthesized, structurally characterized, and compared to the analogous monomeric and homobimetallic complexes. To enable a comprehensive structural anal. for the series of complexes, authors have carried out new single crystal x-ray diffraction studies of seven compounds: Re(CO)3Cl(bpm), anti-[{Re(CO3)Cl}2(bpm)], Mn(CO)3Br(bpz) (bpz = 2,2′-bipyrazine), Mn(CO)3Br(bpm), syn- and anti-[{Mn(CO3)Br}2(bpm)], and syn-[Mn(CO3)Br(bpm)Re(CO)3Br]. Electrochem. studies reveal that the bimetallic complexes are reduced at much more pos. potentials (ΔE ≥ 380 mV) compared to their monometallic analogs. This redox behavior is consistent with introduction of the second tricarbonyl unit which inductively withdraws electron d. from the bridging, redox-active bpm ligand, resulting in more pos. reduction potentials. [Re(CO3)Cl]2(bpm) was reduced with cobaltocene; the ESR spectrum of the product exhibits an isotropic signal (near g = 2) characteristic of a ligand-centered bpm radical. Their findings highlight the facile synthesis as well as the structural characteristics and unique electrochem. behavior of this family of complexes. In addition to this study using Bromopentacarbonylmanganese(I), there are many other studies that have used Bromopentacarbonylmanganese(I)(cas: 14516-54-2SDS of cas: 14516-54-2) was used in this study.

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.SDS of cas: 14516-54-2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Synthesis of π-extended B←N coordinated phenanthroimidazole dimers and their linear and nonlinear optical properties》 was written by Vanga, Mukundam; Sa, Shreenibasa; Kumari, Anupa; Murali, Anna Chandrasekar; Nayak, Prakash; Das, Ritwick; Venkatasubbaiah, Krishnan. Product Details of 3141-27-3 And the article was included in Dalton Transactions in 2020. The article conveys some information:

Intramol. B←N coordinated fluorophores have shown potential applications in optoelectronics and as sensors due to their unique photophys. properties. In this work, we report the synthesis and characterization of π-conjugated boron doped phenanthroimidazole dimers I [7-11, R = H, C6H13; X = bond, 2,5-(C6H13O)2C6H3, 2,5-thiophenediyl, 9,9-(C6H14)2-2,7-fluorenediyl, 9-C6H14-2,7-carbazolediyl]. The synthesis starts from 1-(4-RC6H4)-2-(4-BrC6H4)-1H-phenanthro[9,10-d]imidazole via BBr3 borylation, methylation of the boron center, boronation and Suzuki coupling with dibromides BrXBr. All the π-conjugated B←N coordinated phenanthroimidazole dimers exhibited high quantum yields in solution (up to 99%) and moderate quantum yields in the solid state (up to 51%). We investigated the nonlinear optical properties of phenanthroimidazole dimers and found that the measurement of two-photon-absorption cross-section is correlated with the conjugation length. In the experimental materials used by the author, we found 2,5-Dibromothiophene(cas: 3141-27-3Product Details of 3141-27-3)

2,5-Dibromothiophene(cas: 3141-27-3) , is mainly used as pharmaceutical intermediate and synthesis intermediate. 2,5-Dibromothiophene polymerizes by debromination with magnesium catalyzed by nickel compounds to form poly(2,5- thienylene) .Product Details of 3141-27-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《1,2-Dibromoethane and KI mediated α-acyloxylation of ketones with carboxylic acids》 was written by Wang, Xujie; Li, Gangsheng; Yang, Yanan; Jiang, Jianshuang; Feng, Ziming; Zhang, Peicheng. Quality Control of 4-Bromobenzoic acid And the article was included in Chinese Chemical Letters in 2020. The article conveys some information:

The 1,2-dibromoethane- and KI-mediated α-acyloxylation of ketones is reported in moderate to good yield without the use of transition metals and strong oxidants. Various acids are well tolerated with wide functional group compatibility. An 1,2-dibromoethane- and KI-catalyzed reaction mechanism is proposed based on the results of control experiments The experimental part of the paper was very detailed, including the reaction process of 4-Bromobenzoic acid(cas: 586-76-5Quality Control of 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.Quality Control of 4-Bromobenzoic acid

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Amidoxime-Functionalized Covalent Organic Nanosheets for Sequestration of Uranium In Vivo》 was published in ACS Applied Bio Materials in 2020. These research results belong to Chen, Long; Bai, Ru; Wang, Xiaomei; Zhang, Yijing; He, Linwei; Zhang, Mingxing; Chong, Yu; Chai, Zhifang; Wang, Xiao-Feng; Diwu, Juan. Quality Control of 1,4-Bis(bromomethyl)benzene The article mentions the following:

Finding efficient actinide decorporation agents is crucial for public health and the development of the nuclear industry. The current inventory of decorporation agents is predominately limited to a handful of ligands. In this work, a two-dimensional (2D) covalent organic nanosheet (CON) material was rationally designed and tested for in vivo uranium decorporation. This material is extensively grafted with amidoxime (AO), a classic uranium-recognition ligand, which not only provides selective binding sites for uranyl but also expands the interlayer spacing of CON, making the active sites more accessible. Significantly, the results of in vivo experiments demonstrate that, in both prophylactic and prompt administration groups, CON-AO exhibits a higher excretion ratio of uranium from kidneys than that of ZnNa3-diethylenetriamine pentaacetate (DTPA), while presenting a similar level of cytotoxicity. These results suggest that functionalized CONs may emerge as a promising type of actinide in vivo decorporation agent. In the part of experimental materials, we found many familiar compounds, such as 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

《Hydrogenation of Alkenes Catalyzed by a Non-pincer Mn Complex》 was published in ChemCatChem in 2020. These research results belong to Rahaman, S. M. Wahidur; Pandey, Dilip K.; Rivada-Wheelaghan, Orestes; Dubey, Abhishek; Fayzullin, Robert R.; Khusnutdinova, Julia R.. Product Details of 14516-54-2 The article mentions the following:

Hydrogenation of substituted styrenes and unactivated aliphatic alkenes by mol. hydrogen has been achieved using a Mn catalyst with a non-pincer, picolylphosphine ligand. This is the second reported example of alkene hydrogenation catalyzed by a Mn complex. Mechanistic studies showed that a Mn hydride formed by H2 activation in the presence of a base is the catalytically active species. Based on exptl. and DFT studies, H2 splitting is proposed to occur via a metal-ligand cooperative pathway involving deprotonation of the CH2 arm of the ligand, leading to pyridine dearomatization. In the experiment, the researchers used many compounds, for example, Bromopentacarbonylmanganese(I)(cas: 14516-54-2Product Details 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.Product Details of 14516-54-2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Wang, Zhifan; Yang, Beiqi; Yang, Qi; Wang, Yuanhua published an article in Organic Chemistry Frontiers. The title of the article was 《C(sp3)-H 1,3-diamination of cumene derivatives catalyzed by a dirhodium(II) catalyst》.Safety of 1-Bromo-3,4,5-trimethoxybenzene The author mentioned the following in the article:

The simultaneous and direct amination of multiple inert Csp3-H bonds is a challenging method for C-N bond formation. Here, a radical sequential reaction mediated by a dirhodium(II) catalyst was developed for the successful one-step synthesis of 1,3-diamines via the interaction of cumene derivatives with N-fluorobenzenesulfonimide (NFSI). Mechanistic studies revealed that the reaction underwent an iterative radical polar crossover and desaturation activation procedure to achieve the activation of three adjacent C-H bonds. The synthesized diamine compounds were converted into useful functional mols. by further removal of phenylsulfonyl groups. In the experiment, the researchers used many compounds, for example, 1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8Safety of 1-Bromo-3,4,5-trimethoxybenzene)

1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8) is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff.Safety of 1-Bromo-3,4,5-trimethoxybenzene1-Bromo-3,4,5-trimethoxybenzene can be used to synthesize N,N′-diarylated indolo[3,2-b]carbazole derivatives, which can find applications in electrophotography.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Three-component coupling reaction for the synthesis of fully substituted triazoles: reactivity control of Cu-acetylide toward alkyl azides and diazo compounds》 was written by Chen, Fa-Jie; Mamidipalli, Phani; Sabbasani, Venkata Reddy; Liu, Huaqing; Xia, Yuanzhi; Lee, Daesung. Formula: C9H9BrO2This research focused ontriazole preparation; alkyne alkyl azide diazo compound multicomponent coupling copper catalyst. The article conveys some information:

Herein, a Cu-catalyzed three-component coupling reaction of alkynes, azides, and diazo compounds for the synthesis of fully substituted triazoles I [R = n-Bu, CH2OH, CO2Et, etc.; R1 = CH2SiMe3, Bn, 4-MeC6H4CH2, etc.; R2 = Et, n-hexyl, Bn, 2-adamantyl] was reported. The reactivities of alkyl azides and diazo compounds toward Cu-acetylide were controlled by the introduction of a ligand and the stoichiometry of azide and diazo compounds to suppress the undesired protonation or the alkyne-diazo coupling, maximizing the selectivity for the three-component coupling. Besides, the use of aliphatic alkynes was crucial for achieving high selectivity for the three-component coupling reaction. This method featured mild reaction conditions, broad substrate scope, and good functional group tolerance. A variety of fully substituted triazoles and ring-fused triazoles were synthesized by this method in moderate to good yields. The experimental process involved the reaction of Benzyl 2-bromoacetate(cas: 5437-45-6Formula: C9H9BrO2)

Benzyl 2-bromoacetate(cas: 5437-45-6) has been used in the alkylation of (-)-2,3-O-isopropylidene-D-threitol that afforded lipopeptide, 2-[(4R,5R)-5-({[(9H-fluoren-9-yl)methoxy]carbonylaminomethyl}-2,2-dimethyl-1,3-dioxolan-4-yl)methoxy]acetic acid.Formula: C9H9BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Access to 12-membered cyclic ortho,meta-diarylheptanoids: total synthesis of Actinidione via Isomyricanone》 was written by Masse, Paul; Choppin, Sabine; Chiummiento, Lucia; Colobert, Francoise; Hanquet, Gilles. Synthetic Route of C9H11BrO3This research focused ontwelve membered cyclic ortho meta diarylheptanoid synthesis; Suzuki Miyaura coupling ring closing metathesis; Actinidione synthesis Isomyricanone. The article conveys some information:

We describe herein the first access to 12-membered cyclic[7,0]ortho,meta-diarylheptanoids. The key features of the synthesis include both a Suzuki-Miyaura coupling and a ring closing metathesis. Actinidione, a promising natural product, along with a bioactive tetracyclic derivative were obtained in 14 steps for the first time from cheap com. available substrates with an overall yield of 18-21%. Our modus operandi complies with the principles of the synthesis ideality by using notably strategic reactions. After reading the article, we found that the author used 1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8Synthetic Route of C9H11BrO3)

1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8) is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff.Synthetic Route of C9H11BrO31-Bromo-3,4,5-trimethoxybenzene can be used to synthesize analogs of HA14-1, which shows promising anticancer properties.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Ma, Chun-Hua; Zhao, Lu; He, Xing; Jiang, Yu-Qin; Yu, Bing published an article in Organic Chemistry Frontiers. The title of the article was 《Visible-light-induced direct 3-ethoxycarbonylmethylation of 2-aryl-2H-indazoles in water》.COA of Formula: C9H9BrO2 The author mentioned the following in the article:

A visible-light-driven rhodamine B-catalyzed transition-metal-free 3-ethoxycarbonylmethylation of 2-aryl-2H-indazoles and imidazo[1,2-a]pyridines (40 examples) using com. available α-bromoesters was realized in water. This protocol features sustainability, operational simplicity, mild reaction conditions, and remarkable substrate scope. Importantly, α-bromoamides are also appropriate substrates for affording 3-carbamylmethylation products. It could be used for the synthesis of the drug zolpidem and the late-stage modification of natural products. In the experiment, the researchers used Benzyl 2-bromoacetate(cas: 5437-45-6COA of Formula: C9H9BrO2)

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.COA of Formula: C9H9BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Choi, Hosam; Choi, Joohee; Han, Jongyeol; Lee, Kiyoun published an article in Journal of Organic Chemistry. The title of the article was 《Divergent Total Syntheses of Gymnothelignan N, Beilschmin A, and Eupomatilones 1, 3, 4, and 7》.Reference of 1-Bromo-3,4,5-trimethoxybenzene The author mentioned the following in the article:

A seven-step asym. total synthesis of gymnothelignan N is detailed in the current report. The approach is based on an early-stage one-carbon homologative lactonization reaction, which we recently revisited and modified to construct the core γ-butyrolactone motif with the requisite β,γ-vicinal stereogenic centers. By design, the utilization of the same chiral γ-butyrolactone intermediate permitted the rapid and effective divergent assembly of optically active eupomatilones 1, 3, 4, and 7 in five or six steps from com. available materials. This represents one of the shortest and highest-yielding syntheses reported to date. In the experiment, the researchers used 1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8Reference of 1-Bromo-3,4,5-trimethoxybenzene)

1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8) is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff.Reference of 1-Bromo-3,4,5-trimethoxybenzene1-Bromo-3,4,5-trimethoxybenzene can be used to synthesize N,N′-diarylated indolo[3,2-b]carbazole derivatives, which can find applications in electrophotography.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary