Tag: 200-300

Product Details of 3141-27-3In 2021 ,《Non-fullerene organic photovoltaics based on thienopyrroledione comprising random copolymers; effect of alkyl chains》 was published in Renewable Energy. The article was written by Yasa, Mustafa; Depci, Tolga; Alemdar, Eda; Hacioglu, Serife O.; Cirpan, Ali; Toppare, Levent. The article contains the following contents:

Two new random donor-acceptor (D-A) copolymers, signed as P1 and P2, were designed and synthesized. Electrochem. and spectroelectrochem. measurements were performed to investigate absorption, energy levels, electronic and optical band gaps for comparison. The polymers were used as donor polymers in the active layer to fabricate non-fullerene, bulk heterojunction (BHJ) organic photovoltaics (OPVs). Investigations were carried out through the conventional BHJ structure; ITO/PEDOT: PSS/Active Layer/LiF/Al, where active layer consists of 3,9-bis(2-methylene-(3-(1,1-dicyanomethylene)-indanone))-5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3-d:2′,3′-d′]-s-indaceno[1,2-b:5,6-b′]dithiophene (ITIC) as the acceptor and thienopyrroledione containing donors. The device based on P1:ITIC(1:1) blend with a thickness of 161 nm gave the best performance with a power conversion efficiency (PCE) of 7.94%, an open-circuit voltage (VOC) of 0.86 V, a short-c.d. (JSC) of 18.45 mA cm-2 and a fill factor (FF) of 50.12%. The highest PCE obtained from P2 based organic solar cell is 1.96%. P2 exhibited low solubility attributed to the lack of alkyl groups enhancing polymer solubility, electronic properties, and photovoltaic performances. The research outputs exhibit that introduction of alkyl chains on the polymer backbone can enhance device performance. In the part of experimental materials, we found many familiar compounds, such as 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

SDS of cas: 2675-79-8In 2019 ,《Asymmetric synthesis of the allocolchicinoid natural product N-acetylcolchinol methyl ether (suhailamine), solid state and solution phase conformational analysis》 was published in Tetrahedron. The article was written by Davies, Stephen G.; Fletcher, Ai M.; Roberts, Paul M.; Thomson, James E.; Yeung, Angus. The article contains the following contents:

An asym. synthesis of the allocolchicinoid N-acetylcolchinol Me ether (NCME) from 3-methoxybenzaldehyde is reported. Comparison of 1H and 13C NMR spectroscopic data obtained for this sample of NCME provide further evidence for the assertion that this compound is congruous with the natural product that has been dubbed suhailamine, establishing NCME as a naturally-occurring allocolchicinoid. The single crystal X-ray diffraction structure of NCME is also reported for the first time, revealing a preference for adoption of the (7S,Ra,Z) form-i.e., describing the orientation of the biaryl axis and the amide N-CO bond as well as the configuration of the stereogenic center-in the solid state. A preference for the same form in DMSO-d6 solution is revealed upon anal. by a range of NMR spectroscopic techniques, while an interconverting 69:24:7 mixture of the (7S,Ra,Z), (7S,Sa,Z) and (7S,Ra,E) forms is observed in CDCl3. After reading the article, we found that the author used 1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8SDS of cas: 2675-79-8)

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.SDS of cas: 2675-79-81-Bromo-3,4,5-trimethoxybenzene can be used to synthesize analogs of HA14-1, which shows promising anticancer properties.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Recommanded Product: 4-Bromobenzoic acidIn 2020 ,《A practical catalytic reductive amination of carboxylic acids》 was published in Chemical Science. The article was written by Stoll, Emma L.; Tongue, Thomas; Andrews, Keith G.; Valette, Damien; Hirst, David J.; Denton, Ross M.. The article contains the following contents:

Reductive alkylation reactions of amines using carboxylic acids as nominal electrophiles was reported. The two-step reaction exploits the dual reactivity of phenylsilane and involves a silane-mediated amidation followed by a Zn(OAc)2-catalyzed amide reduction The reaction is applicable to a wide range of amines and carboxylic acids and has been demonstrated on a large scale (305 mmol of amine). The rate differential between the reduction of tertiary and secondary amide intermediates is exemplified in a convergent synthesis of the antiretroviral medicine maraviroc. Mechanistic studies demonstrate that a residual 0.5 equiv of carboxylic acid from the amidation step is responsible for the generation of silane reductants with augmented reactivity, which allow secondary amides, previously unreactive in zinc/phenylsilane systems, to be reduced. In the part of experimental materials, we found many familiar compounds, such as 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

Category: bromides-buliding-blocksIn 2020 ,《Base-Controlled Directed Synthesis of Metal-Methyleneimidazoline (MIz) and Metal-Mesoionic Carbene (MIC) Compounds》 was published in Organometallics. The article was written by Kaur, Mandeep; Patra, Kamaless; Din Reshi, Noor U.; Bera, Jitendra K.. The article contains the following contents:

C2-Substituted imidazolium salts undergo base-controlled metalation of 2-Me group or formation of C4-metalated (MIC) complexes in reaction with ruthenium chloride-bridged precursor. Reactions of a host of metal precursors with pyridyl(benzamide)-functionalized C2-methyl-protected imidazolium salts [L1H2]I and [L2H]I afforded the metal-methyleneimidazoline (MIz) compounds [Ru(L1-κC1)(p-cymene)]I (1, H2L1-I = PhCONH-2,6-py-2,3-Me2-1H-imidazolium iodide), [Mn(L1-κC1)(CO)3] (2), [Ru(L2-κC1)(p-cymene)Cl]PF6(3, HL2-I = 2,3-dimethyl-1-(2-pyridyl)-1H-imidazolium iodide), and [Ir(L2-κC1)(Cp*)Cl]PF6 (4) in the presence of different external bases, such as LiHMDS, Na2CO3, tBuOK, and NaH. However, the use of NaOAc led to the selective formation of the metal-mesoionic carbene (MIC) compounds [Ru(L2-κC5)(p-cymene)Cl]PF6 (5), [Ir(L2-κC5)(Cp*)Cl]PF6 (6), [Ir2(L1-κC5)(Cp*)2I]PF6 (8), and the ortho-metalated compound [Ir(L1)(Cp*)I] (7). All compounds have been characterized by spectroscopic techniques and X-ray crystallog. Being more acidic, the C2-Me is readily deprotonated by the external base to give the metal-MIz products. A metal-bound acetate, in contrast, interacts selectively with the imidazolium C5-H and drives the reaction toward the metal-MIC formation. DFT calculations support a concerted metalation-deprotonation pathway for selective C-H activation and metalation. In the experiment, the researchers used Bromopentacarbonylmanganese(I)(cas: 14516-54-2Category: bromides-buliding-blocks)

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.Category: bromides-buliding-blocks

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《CuSO4-Catalyzed Tandem C(sp3)-H Insertion Cyclization of Toluenes with Isonitriles to Form Indoles》 was published in Organic Letters in 2020. These research results belong to Shan, Xiang-Huan; Wang, Mei-Mei; Tie, Lin; Qu, Jian-Ping; Kang, Yan-Biao. Computed Properties of C6H5Br2N The article mentions the following:

A CuSO4-catalyzed tandem benzylic C-H insertion cyclization of toluene derivatives and isonitriles is described. The naturally abundant salt CuSO4 serves as a low-cost ligand-free redox catalyst. This reaction provides a practical modular synthesis of N-aryl indoles from isonitriles.3,5-Dibromoaniline(cas: 626-40-4Computed Properties of C6H5Br2N) was used in this study.

3,5-Dibromoaniline(cas: 626-40-4) belongs to anime. Amines can be classified according to the nature and number of substituents on nitrogen. Aliphatic amines contain only H and alkyl substituents. Aromatic amines have the nitrogen atom connected to an aromatic ring.Important amines include amino acids, biogenic amines, trimethylamine, and aniline. Inorganic derivatives of ammonia are also called amines, such as monochloramine (NClH2).Computed Properties of C6H5Br2N

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Base- and Catalyst-Induced Orthogonal Site Selectivities in Acylation of Amphiphilic Diols》 was published in Organic Letters in 2020. These research results belong to Ashush, Natali; Fallek, Reut; Fallek, Amit; Dobrovetsky, Roman; Portnoy, Moshe. SDS of cas: 17696-11-6 The article mentions the following:

Seeking to selectively functionalize natural and synthetic amphiphiles, we explored acylation of model amphiphilic diols. The use of a nucleophilic catalyst enabled a remarkable shift of the site selectivity from the polar site, preferred in background noncatalyzed or base-promoted reactions, to the apolar site. This tendency was significantly enhanced for organocatalysts comprising an imidazole active site surrounded by long/branched tails. An explanation of these orthogonal modes of selectivity is supported by competitive experiments with monoalc. substrates. The experimental process involved the reaction of 8-Bromooctanoic acid(cas: 17696-11-6SDS of cas: 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.SDS of cas: 17696-11-6

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,Electrochimica Acta included an article by Wu, Hong Yue; Yang, Qian; Gao, Xue Lang; Zhu, Zhao Yu; Sun, Qi Hui; Zhang, Qiu Gen; Zhu, Ai Mei; Liu, Qing Lin. Quality Control of 1,6-Dibromohexane. The article was titled 《Novel crosslinked aliphatic anion exchange membranes with pendant pentafluorophenyl groups》. The information in the text is summarized as follows:

To enhance the performance of anion exchange membranes (AEMs) by constructing effective ion channels, the authors synthesized novel aliphatic polymers with pentafluorophenyl pendent groups via superacid catalyzed polyhydroxyalkylation and quaternization by grafting multi-cation crosslinker through the Menshutkin reaction. The procedure adopted in this study for preparing the AEMs circumvented the use of precious metal catalysts and made it easy to control the reaction conditions. Compared with the traditional aliphatic AEMs, the AEMs prepared by the new strategy exhibited well-developed microphase-separated structures by increasing the hydrophilic/hydrophobic difference between the polymer backbones and the side chains. Also, the multi-cation crosslinker not only provides ion exchange groups but also constrains the swelling of the AEMs. As the authors expected, the well-defined ion channels were validated by TEM and small angle x-ray scattering (SAXS). The CPFBP-TQA-100 membrane shows a highest ion conductivity of 76.85 mS cm-1 and a swelling ratio of only 24.8% at 80°. A maximum power d. of 116.7 mW cm-2 is achieved by a single cell using the CPFBP-TQA-100 membrane at a c.d. of 300 mA cm-2 at 80°. Besides, all the AEMs display excellent thermal stability and reasonable alk. stability. The results came from multiple reactions, including the reaction of 1,6-Dibromohexane(cas: 629-03-8Quality Control of 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 solvent processable and conductive polyfluorene ionomers for alkaline fuel cell applications; synthesis of cross-linkable regioregular poly(3-(5-hexenyl)thiophene) (P3HNT) for stabilizing the film morphology in polymer photovoltaic cells.Quality Control of 1,6-Dibromohexane

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,Dyes and Pigments included an article by Ma, Xiao-Qiang; Wang, Yun; Wei, Tai-Bao; Qi, Li-Hua; Jiang, Xiao-Mei; Ding, Jin-Dong; Zhu, Wen-Bo; Yao, Hong; Zhang, You-Ming; Lin, Qi. Computed Properties of C6H12Br2. The article was titled 《A novel AIE chemosensor based on quinoline functionalized Pillar[5]arene for highly selective and sensitive sequential detection of toxic Hg2+ and CN-》. The information in the text is summarized as follows:

Aggregation-induced emission (AIE) is widely used for fluorescence on-off-on detection ions and mol. Herein, the authors report a novel AIE chemosensor through self-assembly of quinoline functionalized pillar[5]arene (SPQ5). The SPQ5 can bind with Hg2+ tightly through coordinating reaction. By introducing Hg2+ into AIE-based chemosensor, metal-coordinated chemosensor (SPQ5-Hg2+) was obtained, the SPQ5-Hg2+ could high selectively and sensitively detection of CN- by competitive coordinating interactions. The LODs of SPQ5 for Hg2+ and CN- are 2.53 × 10-8 M and 7.71 × 10-8 M, resp. Hg2+ test kit was prepared by loading the SPQ5 chemosensor on a silica gel plate, which could more convenient and efficiency detection Hg2+ and CN-. The chemosensor SPQ5 could instant sense the Hg2+ and CN- by the changing of fluorescence color and fluorescence intensity. Notably, the fluorescence intensity changes of SPQ5 upon the addition of Hg2+ and CN- were used as an IMP logic gate at the mol. level, using Hg2+ and CN- as chem. inputs and the fluorescence intensity signal as the output. However, the test kit by loading SPQ5 on a silica gel plate was prepared for convenient detection of Hg2+. This study provides a practical application for the sensing of toxic ions in aqueous solution by the construction of supramol. system. In the part of experimental materials, we found many familiar compounds, such as 1,6-Dibromohexane(cas: 629-03-8Computed Properties 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 solvent processable and conductive polyfluorene ionomers for alkaline fuel cell applications; synthesis of cross-linkable regioregular poly(3-(5-hexenyl)thiophene) (P3HNT) for stabilizing the film morphology in polymer photovoltaic cells.Computed Properties of C6H12Br2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Herr, Patrick; Kerzig, Christoph; Larsen, Christopher B.; Haussinger, Daniel; Wenger, Oliver S. published an article in 2021. The article was titled 《Manganese(I) complexes with metal-to-ligand charge transfer luminescence and photoreactivity》, and you may find the article in Nature Chemistry.Related Products of 14516-54-2 The information in the text is summarized as follows:

Precious metal complexes with the d6 valence electron configuration often exhibit luminescent metal-to-ligand charge transfer (MLCT) excited states, which form the basis for many applications in lighting, sensing, solar cells and synthetic photochem. Iron(II) has received much attention as a possible Earth-abundant alternative, but to date no iron(II) complex has been reported to show MLCT emission upon continuous-wave excitation. Manganese(I) has the same electron configuration as that of iron(II), but until now has typically been overlooked in the search for cheap MLCT luminophores. Here we report that isocyanide chelate ligands give access to air-stable manganese(I) complexes that exhibit MLCT luminescence in solution at room temperature These compounds were successfully used as photosensitizers for energy- and electron-transfer reactions and were shown to promote the photoisomerization of trans-stilbene. The observable electron transfer photoreactivity occurred from the emissive MLCT state, whereas the triplet energy transfer photoreactivity originated from a ligand-centered 3π-π* state. [graphic not available: see fulltext]. In the experiment, the researchers used many compounds, for example, 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

Duan, Jingxiang; Xiong, Zongli; Zhou, Yuqiao; Yao, Weijun; Li, Xiaoyi; Zhang, Min; Wang, Zhen published their research in Organic Letters in 2021. The article was titled 《Access to Chiral Chromenones through Organocatalyzed Mannich/Annulation Sequence》.Recommanded Product: Benzyl 2-bromoacetate The article contains the following contents:

An efficient and practical method to access chiral chromenones I (R1 = H, 5-OBn, 6-Cl, 7-OMe, etc.; R2 = H, Me, n-pentyl, 2-phenylethenyl, etc.; R3 = Ph, TMS, cyclohexyl, etc.), II bearing one α-amino stereogenic center in the β position of the carbonyl group was reported. The quinine-derived squaramide could efficiently promote Mannich/cycloketalization/dehydration tandem reactions between 1-(2-hydroxyaryl)-1,3-diketones 2-OH-R4C6H3C(O)CH2C(O)R2 (R4 = H, 5-Cl, 4-OMe, 4-OBn, etc.) and functionalized imines R3CCCH(NHBoc)OEt/R5N(OBoc)CH2COOBn (R5 = Cbz, Boc) generated in situ, providing a wide range of chiral chromenones with propargylamine I or α-amino ester moieties II with good results (54 examples, up to 98% ee). In the experimental materials used by the author, we found Benzyl 2-bromoacetate(cas: 5437-45-6Recommanded Product: Benzyl 2-bromoacetate)

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.Recommanded Product: Benzyl 2-bromoacetate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary