Tag: 200-300

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

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

Hu, Hao; Ichiryu, Hiroki; Nakajima, Kiyohiko; Ogasawara, Masamichi published an article in 2021. The article was titled 《Estimating Effective Steric and Electronic Impacts of a Ferrocenyl Group in Organophosphines》, and you may find the article in ACS Omega.Computed Properties of C7H5BrO2 The information in the text is summarized as follows:

A series of monodentate ferrocenylphosphines, Fc3P (1a), Fc2PhP (1b), and Fc2ArP (1c; Fc = ferrocenyl, Ar = 3,4-methylenedioxyphenyl), were prepared, and their electronic and steric properties were quant. determined By the IR measurements of their resp. Ni(CO)3(phosphine) complexes, the electronic properties of the ferrocenyl group in organophosphines were estimated to be similar to those of primary alkyl groups. The ferrocenyl group is a better electron donor than a Me group and a poorer donor than an Et group. The gold(I) chloride complexes of 1a-c were prepared and their X-ray crystal structures were determined The %Vbur parameters for 1a-c were calculated using the X-ray structural data, and their ”Tolman cone angles” were estimated The steric influence of the ferrocenyl group in organophosphines was clarified to be larger than those of cyclohexyl, tert-Bu, and o-tolyl groups and is comparable to that of a mesityl group. In addition to this study using 5-Bromobenzo[d][1,3]dioxole, there are many other studies that have used 5-Bromobenzo[d][1,3]dioxole(cas: 2635-13-4Computed Properties of C7H5BrO2) was used in this study.

Furthermore, the coupling of 5-Bromobenzo[d][1,3]dioxole(cas: 2635-13-4) with β-methallyl alcohol was catalyzed by Pd(OAc)2 in combination with P(t-Bu)3.Computed Properties of C7H5BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Category: bromides-buliding-blocksIn 2019 ,《Small antibacterial molecules highly active against drug-resistant Staphylococcus aureus》 was published in MedChemComm. The article was written by Dey, Rajib; De, Kathakali; Mukherjee, Riya; Ghosh, Sreyan; Haldar, Jayanta. The article contains the following contents:

The rapid growth of antibiotic resistance in Staphylococcus aureus coupled with their biofilm forming ability has made the infections difficult to treat with conventional antibiotics. This has created a massive threat towards public health and is a huge concern worldwide. Aiming to address this challenging issue, herein we report a new class of small antibacterial mols. (SAMs) with high antibacterial activity against multidrug-resistant S. aureus. The design principle of the mols. was based on the variation of hydrophobic/hydrophilic balance through incorporation of two quaternary ammonium groups, ethanol moieties, non-peptidic amide bonds and aliphatic chains. The lead compound, identified through a comprehensive anal. of structure-activity relationships, displayed high activity against clin. isolates of methicillin-resistant S. aureus (MRSA) and vancomycin-resistant S. aureus (VRSA) with MIC values in the range of 1-4μg mL-1. More importantly, this compound was capable of killing stationary phase bacteria and disrupting established biofilms of MRSA. Addnl., the compound revealed min. toxicity towards human erythrocytes (HC50 = 577μg mL-1) and did not show significant toxicity towards mammalian cells (MDCK and A549) up to 128 g mL-1. Remarkably, the incorporation of non-peptidic amide bonds made the compounds less susceptible to degradation in human plasma, serum and mouse liver homogenate. Taken together, the results therefore indicate great promise for this class of mols. to be developed as potent antibacterial agents in treating infections caused by drug-resistant S. aureus. In the experiment, the researchers used many compounds, for example, 1,6-Dibromohexane(cas: 629-03-8Category: bromides-buliding-blocks)

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.Category: bromides-buliding-blocks

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Synthetic Route of C7H5BrO2In 2019 ,《Catalyst-Free Approach for Hydroboration of Carboxylic Acids under Mild Conditions》 appeared in ACS Omega. The author of the article were Xu, Xiaojuan; Yan, Dandan; Zhu, Zhangye; Kang, Zihan; Yao, Yingming; Shen, Qi; Xue, Mingqiang. The article conveys some information:

Aryl and alkyl carboxylic acids underwent hydroboration with pinacolborane under solvent-free conditions or in THF to yield primary alkyl pinacolborate esters. Seven of the borate esters were hydrolyzed to the corresponding primary alcs. in 90-93% yields with silica in MeOH. Benzoic acid was reduced under solvent-free conditions to yield benzyl pinacol borate in 98% yield on 15 mmol scale. After reading the article, we found that the author used 4-Bromobenzoic acid(cas: 586-76-5Synthetic Route of C7H5BrO2)

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.Synthetic Route of C7H5BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Liu, Pei; Zhang, Sheng; Pei, Xiaomei; Song, Binglei; Jiang, Jianzhong; Cui, Zhenggang; Binks, Bernard P. published an article in Soft Matter. The title of the article was 《Recyclable and re-usable smart surfactant for stabilization of various multi-responsive emulsions alone or with nanoparticles》.Electric Literature of C8H15BrO2 The author mentioned the following in the article:

A novel multi-responsive surfactant (abbreviated as N+-8P8-N) was synthesized, in which one octyl trimethylamine group (quaternary ammonium) and one octyl dimethylamine group are connected to a benzene ring through ether bonds. This novel surfactant can stabilize conventional oil-in-water (O/W) emulsions alone, and O/W Pickering emulsions and novel oil-in-dispersion emulsions together with oppositely and similarly charged nanoparticles, resp. In all cases rapid demulsification can be achieved through either pH or CO2/N2 triggers, by which the surfactant is reversibly converted between a normal cationic surfactant form (N+-8P8-N) and a strongly hydrophilic and surface-inactive bola form (N+-8P8-NH+). Notably, the bola form N+-8P8-NH+ dissolves in the aqueous phase alone or together with nanoparticles after demulsification without contamination of the oil phase, and the aqueous phase can be recycled many times triggered by pH or CO2/N2 in accordance with the principle of green chem. This newly designed re-usable smart surfactant is significant for the development of various temporarily stable emulsions, which are extensively applied in emulsion polymerization, new material synthesis, heterogeneous catalysis and oil transportation.8-Bromooctanoic acid(cas: 17696-11-6Electric Literature of C8H15BrO2) was used in this study.

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. And 8-Bromooctanoic Acid is a useful compound for sonodynamic therapy.Electric Literature of C8H15BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Li, Fusheng; Lin, Shuangjie; Li, Xiyu; Shi, Lei published their research in Synthesis in 2021. The article was titled 《Photocatalytic Generation of π-Allyltitanium Complexes from Butadiene via a Radical Strategy》.SDS of cas: 5437-45-6 The article contains the following contents:

This study reported a conceptually new radical strategy for the photocatalytic generation of π-allyltitanium complexes from butadiene. This novel and environmentally benign strategy enables the direct three-component allylation of carbonyls with 1,3-butadiene and α-bromocarboxylates, providing rapid access to valuable homoallylic alcs. with exceptional regio- and diastereoselectivity control. The experimental process involved the reaction of Benzyl 2-bromoacetate(cas: 5437-45-6SDS of cas: 5437-45-6)

Benzyl 2-bromoacetate(cas: 5437-45-6) belongs to benzyl acetate. Benzyl acetate is a synthetic chemical produced for industry from benzyl alcohol and acetic acid, but is also naturally present in the essential oils of many plants, including jasmine and ylang ylang.SDS of cas: 5437-45-6

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary