bromides-buliding-blocks Archives - Page 865 of 1419

Peng, Lingteng’s team published research in Organic & Biomolecular Chemistry in 2022 | 3959-07-7

Organic & Biomolecular Chemistry published new progress about Amines Role: SPN (Synthetic Preparation), PREP (Preparation). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Application of C7H8BrN.

Peng, Lingteng; Hu, Zhifang; Zhao, Yanting; Peng, Lifen; Xu, Zhi; Yin, Shuang-Feng; Tang, Zilong; Qiu, Renhua; Kambe, Nobuaki published the artcile< One-pot synthesis of phosphorylnaphth[2,1-d]oxazoles and products as P,N-ligands in C-N and C-C formation>, Application of C7H8BrN, the main research area is carbon nitrogen bond formation palladium catalyst nickel phosphinylnaphthoxazole; crystal structure mol phosphinylnaphthoxazole methoxy phenyl preparation; phosphorylnaphthoxazole preparation coupling catalyst nitrogen carbon bond formation.

Phosphinylnaphtho[2,1-d]oxazoles were synthesized successfully through one-pot phosphonation of naphthoquinone with diaryl(alkyl)phosphine oxides and Cu-catalyzed oxidative condensation with imines, followed by methylation and reduction Upon applying 4-phosphinylnaphtho[2,1-d]oxazole as a P,N-chelating ligand, Pd-catalyzed C-N formation of amines or nitrobenzene as well as Ni-catalyzed C-C formation and the synthesis of quinoline proceeded successfully. The reaction was facilely scaled up to give a N-benzylaniline in a gram scale synthesis. This research provided a facile and convenient protocol to synthesize phosphinylnaphtho[2,1-d]oxazoles, which could be applied as an efficient P,N-ligand in transition-metal-catalyzed C-N and C-C formation to produce the desired products in high yields with wide functional group tolerance under small catalyst loading, solvent-free conditions in many reactions.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Sevgili, Omer’s team published research in Composites, Part B: Engineering in 2019-09-01 | 184239-35-8

Composites, Part B: Engineering published new progress about Electric contacts. 184239-35-8 belongs to class bromides-buliding-blocks, and the molecular formula is C26H18Br2, Recommanded Product: 1,2-Bis(4-bromophenyl)-1,2-diphenylethene.

Sevgili, Omer; Lafzi, Ferruh; Karabulut, Abdulkerim; Orak, Ikram; Bayindir, Sinan published the artcile< The synthesis of new bola-amphiphile TPEs and the comparison of current transformer mechanism and structural properties for Al/Bis(HCTA)-TPE/p-Si and Al/Bis(HCOA)-TPE/p-Si heterojunctions>, Recommanded Product: 1,2-Bis(4-bromophenyl)-1,2-diphenylethene, the main research area is bola amphiphile tetraphenylethylene silicon heterojunction current transformer.

In this study, the new bola-amphiphile tetraphenylethylene derivatives Bis(HCTA)-TPE and Bis(HCOA)-TPE were synthesized to use in device application by a green approach. Al/organic layer/p-Si heterojunctions were fabricated by the usage of Bis(HCTA)-TPE and Bis(HCOA)-TPE organic interfacial layers. The mentioned organic layers were coated on the polished side of silicon wafer using the spin coating method. The surface and morphol. analyses of materials coated on silicon substrate were investigated by using at. force microscopy (AFM) and SEM (SEM) images. Besides, the elec. characteristics of fabricated heterojunctions were examined by the use of current-voltage (I-V) and current-time (I-t) measurements and compared with each other. I-V characteristics were investigated under various illumination conditions, and also the behavior of these characteristics against changing temperature conditions has been determined At the same time, transient photocurrent measurements were performed to determine the photoresponse behaviors. The results show that the fabricated device with Bis(HCTA)-TPE organic interfacial layer exhibits better elec. characteristics than the Bis(HCOA)-TPE organic layer. The other result of this experiment is that the fabricated devices could be used in optoelectronic and photovoltaic applications.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Kumar, Mukesh’s team published research in Organic Letters in 2017-06-02 | 3893-18-3

Organic Letters published new progress about Aldol condensation. 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, Electric Literature of 3893-18-3.

Kumar, Mukesh; Chauhan, Pankaj; Valkonen, Arto; Rissanen, Kari; Enders, Dieter published the artcile< Asymmetric Synthesis of Functionalized Tricyclic Chromanes via an Organocatalytic Triple Domino Reaction>, Electric Literature of 3893-18-3, the main research area is asym synthesis functionalized tricyclic chromane organocatalysis triple domino; secondary amine catalyzed domino Michael aldol condensation aldehyde nitrochromene; alpha beta unsaturated aldehyde Michael aldol condensation nitrochromene; crystal mol structure tricyclic chromane.

A highly stereoselective triple domino reaction for the synthesis of functionalized tricyclic chromane scaffolds has been developed. A secondary amine-catalyzed domino Michael/Michael/aldol condensation reaction between aliphatic aldehydes, nitro-chromenes, and α,β-unsaturated aldehydes leads to the formation of synthetically important tricyclic chromanes bearing four contiguous stereogenic centers including a tetrasubstituted carbon in good yields (20-66%) and excellent stereoselectivities (>20:1 dr and >99% ee).

Organic Letters published new progress about Aldol condensation. 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, Electric Literature of 3893-18-3.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Plunkett, Shane’s team published research in Organic Letters in 2020-10-02 | 6942-39-8

Organic Letters published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 6942-39-8 belongs to class bromides-buliding-blocks, and the molecular formula is C8H6BrFO2, Safety of Methyl 2-bromo-5-fluorobenzoate.

Plunkett, Shane; DeRatt, Lindsey G.; Kuduk, Scott D.; Balsells, Jaume published the artcile< Synthesis of 4-Alkylated Isocoumarins via Pd-Catalyzed α-Arylation Reaction>, Safety of Methyl 2-bromo-5-fluorobenzoate, the main research area is isocoumarin preparation; palladium catalyst cyclocondensation aldehyde halobenzoate.

A convergent method for the rapid preparation of substituted isocoumarins such as I is reported. The transformation takes advantage of a spontaneous intramol. cyclization that follows the Pd-catalyzed α-arylation of aldehydes such as butyraldehyde and ketones (cyclohexanone and 2,3-dihydro-4-benzopyranone) with 2-halobenzoic esters such as Me 2-bromo-5-methoxybenzoate. The reaction uses an air-stable, single-component palladium catalyst (Xantphos Pd G3) and provides access to 4-alkylated isocoumarins in one step from com. starting materials. The applicability of the method using both cyclic and linear ketones as well as transformations of the isocoumarin core is also demonstrated.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Wang, Chang-An’s team published research in Polymer Chemistry in 2017 | 3893-18-3

Polymer Chemistry published new progress about Adsorption. 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, Name: 3-(4-Bromophenyl)acrylaldehyde.

Wang, Chang-An; Li, Yan-Wei; Han, Yin-Feng; Zhang, Jian-Ping; Wu, Ren-Tao; He, Guo-Fang published the artcile< The ""bottom-up"" construction of chiral porous organic polymers for heterogeneous asymmetric organocatalysis: MacMillan catalyst built-in nanoporous organic frameworks>, Name: 3-(4-Bromophenyl)acrylaldehyde, the main research area is chiral porous polymer organocatalyst enantioselectivity.

Although many porous organic polymers (POPs) embedded with chiral ligand-metal catalytic activities have been examined as heterogeneous asym. catalysts, examples of metal-free stereoselective POP catalysts are very scarce. Herein, we report a “”bottom-up”” strategy used to construct a MacMillan catalyst-embedded chiral porous organic polymer, Mac-CPOPs. The porosity of the Mac-CPOPs frameworks could be adjusted by varying the mol. length of the rigid structural monomers. Due to the high Brunauer-Emmett-Teller sp. surface area and the built-in character of the covalently linked MacMillan catalyst, the Mac-CPOP-2 polymer can be applied as a highly efficient and recoverable heterogeneous organocatalyst in the asym. Diels-Alder reaction, which gives products in good yields and with good enantioselectivity. Moreover, the Mac-CPOP-2 polymer can be reused 6 times for the asym. Diels-Alder reaction without any significant loss of catalytic activity and enantioselectivity.

Polymer Chemistry published new progress about Adsorption. 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, Name: 3-(4-Bromophenyl)acrylaldehyde.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

He, Junhui’s team published research in Organic Letters in 2020-04-03 | 3959-07-7

Organic Letters published new progress about C-C bond cleavage (C=C). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Related Products of 3959-07-7.

He, Junhui; Dong, Jianyu; Su, Lebin; Wu, Shaofeng; Liu, Lixin; Yin, Shuang-Feng; Zhou, Yongbo published the artcile< Selective Oxidative Cleavage of 3-Methylindoles with Primary Amines Affording Quinazolinones>, Related Products of 3959-07-7, the main research area is quinazolinone preparation; methylindole primary amine selective oxidative cleavage tetrabutylammonium iodide catalyst.

A selective functionalization of C-C=C bonds toward N-C=O bonds is realized by an n-Bu4NI-catalyzed reaction of 3-methylindoles I (R1 = 7-Me, 5-MeO, 5-F, etc.) and 3-methyl-1H-pyrrolo[2,3-c]pyridine with primary amines R2NH2 (R2 = Bu, benzyl, cyclopropyl, thiophen-2-yl, etc.) using TBHP as the unique oxidant. The systematic process involves oxygenation, nitrogenation, ring-opening, and recyclization, affording a broad range of quinazolinones II (R3 = 8-Me, 6-MeO, 6-Br, etc.) and 3-benzylpyrido[3,4-d]pyrimidin-4(3H)-one in good to excellent yields.

Organic Letters published new progress about C-C bond cleavage (C=C). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Related Products of 3959-07-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Matharu, Daljit S’s team published research in Journal of Medicinal Chemistry in 2014-12-26 | 14062-30-7

Journal of Medicinal Chemistry published new progress about Antiviral agents. 14062-30-7 belongs to class bromides-buliding-blocks, and the molecular formula is C10H11BrO2, SDS of cas: 14062-30-7.

Matharu, Daljit S.; Flaherty, Daniel P.; Simpson, Denise S.; Schroeder, Chad E.; Chung, Donghoon; Yan, Dan; Noah, James W.; Jonsson, Colleen B.; White, E. Lucile; Aube, Jeffrey; Plemper, Richard K.; Severson, William E.; Golden, Jennifer E. published the artcile< Optimization of Potent and Selective Quinazolinediones: Inhibitors of Respiratory Syncytial Virus That Block RNA-Dependent RNA-Polymerase Complex Activity>, SDS of cas: 14062-30-7, the main research area is quinazolinedione inhibitor respiration syncytial virus RNA polymerase.

A quinazolinedione-derived screening hit 2 was discovered with cellular antiviral activity against respiratory syncytial virus (CPE EC50 = 2.1 μM), moderate efficacy in reducing viral progeny (4.2 log at 10 μM), and marginal cytotoxic liability (selectivity index, SI ∼ 24). Scaffold optimization delivered analogs with improved potency and selectivity profiles. Most notable were compounds 15 and 19 (EC50 = 300-500 nM, CC50 > 50 μM, SI > 100), which significantly reduced viral titer (>400,000-fold), and several analogs were shown to block the activity of the RNA-dependent RNA-polymerase complex of RSV.

Journal of Medicinal Chemistry published new progress about Antiviral agents. 14062-30-7 belongs to class bromides-buliding-blocks, and the molecular formula is C10H11BrO2, SDS of cas: 14062-30-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Wang, Kai’s team published research in ACS Catalysis in 2021-09-03 | 51605-97-1

ACS Catalysis published new progress about [4+2] Cycloaddition reaction. 51605-97-1 belongs to class bromides-buliding-blocks, and the molecular formula is C9H12BrN, Quality Control of 51605-97-1.

Wang, Kai; Lin, Xiangfeng; Liu, Yan; Li, Can published the artcile< Palladium-Catalyzed Asymmetric Allylic C-H Functionalization for the Synthesis of Hydroquinolines through Intermolecular [4+2] Cycloadditions>, Quality Control of 51605-97-1, the main research area is hydroquinoline preparation stereoselective; ortho allyl aniline alkene allylic alkylation intermol cycloaddition palladium.

Catalytic asym. [4+2] cycloadditions via allylic C-H functionalization are of great interest and importance but remain unexplored. Herein, an intermol. [4+2] cycloaddition involving the direct Pd(0)-catalyzed allylic C-H functionalization with readily accessible olefin substrates is reported. Key to the success of this reaction is a chiral alkylphosphine ligand, which enables the asym. allylic C-H alkylation to deliver a broad range of hydroquinolines in high diastereoselectivities (up to >20:1) and enantioselectivities (up to 98% ee). Control experiments show that allylic C-H functionalization takes place possibly via the concerted proton and two-electron transfer process. This strategy opens a route for synthesizing chiral heterocycles in a straightforward way with readily accessible substrates and minimal functional-group manipulation.

ACS Catalysis published new progress about [4+2] Cycloaddition reaction. 51605-97-1 belongs to class bromides-buliding-blocks, and the molecular formula is C9H12BrN, Quality Control of 51605-97-1.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Xiang, Ming’s team published research in Journal of Power Sources in 2022-07-01 | 3959-07-7

Journal of Power Sources published new progress about Cyclic voltammetry. 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Reference of 3959-07-7.

Xiang, Ming; Xu, Zhihua; Wu, Qianhui; Wang, Yanchen; Yan, Zhaoxiong published the artcile< Selective electrooxidation of primary amines over a Ni/Co metal-organic framework derived electrode enabling effective hydrogen production in the membrane-free electrolyzer>, Reference of 3959-07-7, the main research area is metal organic framework hydrogen production electrooxidation.

The overall water electrolysis always needs an ion-conductive membrane to sep. the generated hydrogen and oxygen from the corresponding cathode and anode, which improves the manufacturing cost of the electrolyzer. The substitution of thermodynamically more favorable organic oxidation reactions for oxygen evolution reaction avoids the requirement of the membrane, accompanied by the generation of value-added products at the anode. Herein, with the help of the bimetallic Ni/Co metal-organic framework derivative (t-Ni/Co MOF) as the anodic electrocatalyst, we develop an oxidant-free condition for the selective conversion of primary amines into nitriles. Specifically, aromatic and aliphatic nitriles can be conveniently obtained with good yields and faradaic efficiencies over the t-Ni/Co MOF electrode when coupling with the hydrogen evolution reaction. Notably, benzylamine can be oxidized into benzonitrile even at an ultralow potential of 1.30 V vs. reversible hydrogen electrode (RHE) over the t-Ni/Co MOF electrode, which is lower than that of the reported Ni-based monometallic electrocatalysts for benzylamine elecrooxidn. Control experiments suggest that the reversible electron transfer process of Co2+ ↔ Co3+ at a relatively low potential contributes to the formation of higher valence Ni species, which accelerates the kinetics of the primary amine oxidation, simultaneously reducing power consumption for hydrogen production

Journal of Power Sources published new progress about Cyclic voltammetry. 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Reference of 3959-07-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Zhu, Jun’s team published research in Nature Chemistry in 2021-09-30 | 1530-33-2

Nature Chemistry published new progress about Biaryls Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 1530-33-2 belongs to class bromides-buliding-blocks, and the molecular formula is C21H22BrP, Electric Literature of 1530-33-2.

Zhu, Jun; Zhang, Rui; Dong, Guangbin published the artcile< Orthogonal cross-coupling through intermolecular metathesis of unstrained C(aryl)-C(aryl) single bonds>, Electric Literature of 1530-33-2, the main research area is biaryl ruthenium catalyst regioselective orthogonal cross coupling reaction.

Ruthenium-catalyzed reversible C-C single-bond metathesis reaction that allowed redox- and pH-neutral biaryl synthesis. Assisted by directing groups, unstrained homo-biaryl compounds underwent aryl exchanges to generate cross-biaryl products, catalyzed by a well-defined air-stable ruthenium(II) complex. Functional groups reactive under typical cross-coupling reactions, such as halogen, silyl and boronate moieties, were compatible under the metathesis conditions. Mechanistic studies disclosed an intriguing ‘olefin-metathesis-like’ pathway that involved an unexpected heptacoordinated, 18-electron closed-shell intermediate. The distinct reaction mode discovered here is expected to inspire the development of more general C-C single-bond metathesis and orthogonal cross-coupling reactions.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary