Tag: M.W=150-200

Xia, Youfu; Du, Yanqing; Xiang, Qian; Humphrey, Mark G. published the artcile< Highly efficient room-temperature phosphorescent materials with a heavy-atom effect of bromine>, Synthetic Route of 576-83-0, the main research area is bromine carbazole phosphorescent material crystal packing.

Room-temperature phosphorescent (RTP) materials with long luminescence lifetimes have stimulated considerable interest. However, pure organic mols. with persistent room-temperature phosphorescence are still rarely reported. In this work, we study two mols., DCzMPh and TCzMPh, in which persistent room-temperature phosphorescence in the amorphous state is achieved via the heavy-atom effect of bromine atoms in their structure. Their final quantum yields are found to be as high as 90 and 93%, resp., at the phosphorescence lifetimes of 0.27 and 0.28 s, resp. Moreover, both mols. are shown to be appropriate for security protection applications.

New Journal of Chemistry published new progress about Crystal packing (particle). 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Synthetic Route of 576-83-0.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Kang, Seokwoo; Huh, Jin-Suk; Kim, Jang-Joo; Park, Jongwook published the artcile< Highly efficient deep-blue fluorescence OLEDs with excellent charge balance based on phenanthro[9,10-d]oxazole-anthracene derivatives>, Name: 4-Bromobenzylamine, the main research area is phenanthrooxazole anthracene derivative fluorescence organic light emitting diode.

Two blue fluorescent materials, m-PO-ABN and p-PO-ABN, are newly synthesized by controlling the conjugation length based on different linkages of the meta or para position between the phenanthro[9,10-d]oxazole (PO) moiety and anthracene substituted with a cyano group. The two materials emit deep-blue light with a high photoluminescence quantum yield (PLQY) in solution state. Non-doped devices fabricated using m-PO-ABN and p-PO-ABN show the EL peaks at 448 and 460 nm corresponding to the Commission Internationale de L’Eclairage (CIE) coordinates of (0.148, 0.099) and (0.150, 0.164), resp. The external quantum efficiency (EQE) values of the devices are 5.9% and 5.3% for m-PO-ABN and p-PO-ABN, resp. Transient EL measurements and optical calculation results reveal that both materials exhibit good charge balance and triplet-triplet annihilation in the devices, which may originate from enhanced bipolar characteristics due to the insertion of PO and cyano moieties.

Journal of Materials Chemistry C: Materials for Optical and Electronic Devices published new progress about Blue electroluminescence. 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Name: 4-Bromobenzylamine.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Deng, Lanqing; Chen, Lang; Zhu, Liangdi; Li, Yang; Ou-Yang, Jie; Wu, Shaofeng; Chen, Peng; Shen, Sheng; Guo, Junkang; Zhou, Yongbo; Au, Chak-Tong; Yin, Shuang-Feng published the artcile< Green, versatile, and scale-up synthesis of amides by aerobic oxidative amination over Ag2O/P-C3N4 photocatalyst>, Reference of 3959-07-7, the main research area is green versatile scale amide aerobic oxidative amination photocatalyst.

Being extensively applied in various fields of chem. and chem. industry, the development of a green and versatile method for the synthesis of amides is in line with the demand of sustainable chem. Herein, a direct, highly selective, and scale-up (5-20 mmol) method for photocatalytic synthesis of amides through aerobic oxidative amination of alcs. with amines was developed under visible light, room temperature, using air as the oxidant. Benefiting from the adsorption of sodium hemiaminal on catalyst lengthens the C-H bond (1.148 Å), this novel process is feasible for a broad range of functionlized amides (69 examples), especially those for drug manufacture (e.g., moclobemide and pipobroman). Imines was almost prevented with excellent amide selectivity up to 99% could be ascribed to the low energy barrier for hemiaminal dehydrogenation while that for dehydration is high (2.13 eV). This green and efficient protocol represents an ideal alternative to the currently known methods.

Chemical Engineering Science published new progress about Adsorption. 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

Yu, Bangkui; Zou, Suchen; Huang, Hanmin published the artcile< Palladium-Catalyzed Ring-Closing Reaction for the Synthesis of Saturated N-Heterocycles with Aminodienes and N,O-Acetals>, Application of C7H8BrN, the main research area is saturated heterocycle preparation; aminodiene acetal palladium catalyst ring closing reaction.

An efficient palladium-catalyzed ring-closing reaction of aminodienes e.g., (E)-N-(2-(benzylamino)ethyl)-4-methyl-N-(penta-2,4-dien-1-yl)benzenesulfonamide with N,O-acetals RN(R1)CH2OCH3 [R = n-Bu, Bn, (4-bromophenyl)methyl, etc.; R1 = n-Bu, Bn, (4-bromophenyl)methyl, etc.; RR1 = -(CH2)2O(CH2)2-] for the synthesis of saturated N-heterocycles e.g., (E)-N,N-dibenzyl-3-(1-benzyl-4-tosyl-1,4-diazepan-6-yl)prop-2-en-1-amine is described. The reaction is consistently operated at room temperature and tolerates a wide range of functional groups with volatile MeOH as the sole byproduct. This method provides rapid and practical access to a broad range of saturated N-heterocycles e.g., (E)-N,N-dibenzyl-3-(1-benzyl-4-tosyl-1,4-diazepan-6-yl)prop-2-en-1-amine with diverse structural backbones that are useful building blocks in natural product synthesis and drug discovery.

Journal of Organic Chemistry published new progress about Acetals Role: RCT (Reactant), RACT (Reactant or Reagent) (N, O). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Application of C7H8BrN.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Irmler, Peter; Gogesch, Franciska S.; Larsen, Christopher B.; Wenger, Oliver S.; Winter, Rainer F. published the artcile< Four different emissions from a Pt(Bodipy)(PEt3)2(S-Pyrene) dyad>, Quality Control of 576-83-0, the main research area is BPtSPyr MesPtSPyr dyad toluene acetone emission.

The Pt(bodipy)-(mercaptopyrene) dyad BPtSPyr shows four different emissions: intense near-IR phosphorescence (Φph up to 15%) from a charge-transfer state pyrS ̇+-Pt-BDP ̇-, addnl. fluorescence and phosphorescence emissions from the 1ππ* and 3ππ* states of the bodipy ligand at r.t., and phosphorescence from the pyrene 3ππ* and the bodipy 3ππ* states in a glassy matrix at 77 K.

Dalton Transactions published new progress about Energy level. 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Quality Control of 576-83-0.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Gao, Run-Duo; Shuler, Scott A.; Watson, Donald A. published the artcile< Tandem aza-Heck Suzuki and carbonylation reactions of O-phenyl hydroxamic ethers: complex lactams via carboamination>, Recommanded Product: 4-Bromobenzylamine, the main research area is hydroxamic ether arylboronic acid palladium catalyst tandem aza Heck; amine carbon monoxide hydroxamic ether tandem aza heck carbonylation; lactam preparation.

The palladium-catalyzed tandem aza-Heck-Suzuki and aza-Heck-carbonylation reactions of O-Ph hydroxamic ethers were reported. These formal alkene carboamination reactions provided highly versatile access to wide range complex, stereogenic secondary lactams and exhibited outstanding functional group tolerance and high diastereoselectivity.

Chemical Science published new progress about Alkenes Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Recommanded Product: 4-Bromobenzylamine.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Zhou, Jun; Li, Xia; Ma, Xiaoming; Sheng, Wenlong; Lang, Xianjun published the artcile< Cooperative photocatalysis of dye-TiO2 nanotubes with TEMPO+BF-4 for selective aerobic oxidation of amines driven by green light>, Quality Control of 3959-07-7, the main research area is photocatalysis dye titania nanotube selective aerobic oxidation amine.

Visible light photocatalysis could offer an eco-friendly alternative for selective transformation of organic mols. Herein, a cooperative system is created with alizarin red S (ARS), TiO2 nanotubes (TNTs), and an extra redox mediator. The electron transfer between oxidatively quenched ARS-TNTs and the redox mediator is the key to secure cooperative photocatalysis. The selective aerobic oxidation of primary and secondary amines was constructed by cooperative photocatalysis of ARS-TNTs with 2,2,6,6-tetramethylpiperidine-1-oxoammonium tetrafluoroborate (TEMPO+BF-4) driven by green light. Specifically, the activity of anatase TNTs could reach about 2.2 times that of the P25 (Aeroxide P25) TiO2 precursor. Due to increased polarity, TEMPO+BF-4 serves more efficiently for electron transfer than (2,2,6,6-tetramethylpiperidin-1-yl)oxy (TEMPO), conferring above 1.5 times of activity that of TEMPO for the selective aerobic conversion of amines. This work features the potential of designing redox mediators in amplifying cooperative photocatalysis driven by visible light.

Applied Catalysis, B: Environmental published new progress about Aromatic amines Role: RCT (Reactant), RACT (Reactant or Reagent). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Quality Control of 3959-07-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

MacKenzie, Ian A.; Wang, Leifeng; Onuska, Nicholas P. R.; Williams, Olivia F.; Begam, Khadiza; Moran, Andrew M.; Dunietz, Barry D.; Nicewicz, David A. published the artcile< Discovery and characterization of an acridine radical photoreductant>, Electric Literature of 576-83-0, the main research area is intramol photoinduced electron transfer dehalogenation acridine detosylation photocatalyst photocatalysis.

Photoinduced electron transfer (PET) is a phenomenon whereby the absorption of light by a chem. species provides an energetic driving force for an electron-transfer reaction1-4. This mechanism is relevant in many areas of chem., including the study of natural and artificial photosynthesis, photovoltaics and photosensitive materials. In recent years, research in the area of photoredox catalysis has enabled the use of PET for the catalytic generation of both neutral and charged organic free-radical species. These technologies have enabled previously inaccessible chem. transformations and have been widely used in both academic and industrial settings. Such reactions are often catalyzed by visible-light-absorbing organic mols. or transition-metal complexes of ruthenium, iridium, chromium or copper5,6. Although various closed-shell organic mols. have been shown to behave as competent electron-transfer catalysts in photoredox reactions, there are only limited reports of PET reactions involving neutral organic radicals as excited-state donors or acceptors. This is unsurprising because the lifetimes of doublet excited states of neutral organic radicals are typically several orders of magnitude shorter than the singlet lifetimes of known transition-metal photoredox catalysts7-11. Here we document the discovery, characterization and reactivity of a neutral acridine radical with a maximum excited-state oxidation potential of -3.36 V vs. a SCE, which is similarly reducing to elemental lithium, making this radical one of the most potent chem. reductants reported12. Spectroscopic, computational and chem. studies indicate that the formation of a twisted intramol. charge-transfer species enables the population of higher-energy doublet excited states, leading to the observed potent photoreducing behavior. We demonstrate that this catalytically generated PET catalyst facilitates several chem. reactions that typically require alkali metal reductants and can be used in other organic transformations that require dissolving metal reductants.

Nature (London, United Kingdom) published new progress about Dehalogenation catalysts, photochem.. 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Electric Literature of 576-83-0.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Li, Xia; Zhang, Fulin; Wang, Yuexin; Xiong, Kanghui; Lang, Xianjun published the artcile< Extending the 2D conjugated microporous polymers linked by thiazolo[5,4-d]thiazole for green light-driven selective aerobic oxidation of amines>, Quality Control of 3959-07-7, the main research area is benzylimine preparation regioselective photochem; benzylamine aerobic oxidation thiazolothiazole microporous polymer catalyst; regioselective aerobic oxidation photocatalyst thiazolothiazole microporous polymer.

Donor-π-acceptor (D-π-A) type CMPs linked by the electron-deficient thiazolo[5,4-d]thiazole (TzTz, i.e. the acceptor) were designed by extending the donor from benzene to pyrene to broaden the visible light activity. Subsequently, two-dimensional (2D) CMPs, TzTz-CMP-Be and TzTz-CMP-Py, were constructed via a solvothermal process. The more extended π-conjugation and planar pyrene bestow upon TzTz-CMP-Py with broader absorption of visible light and higher efficiency of charge transfer than TzTz-CMP-Be. Significantly, TzTz-CMP-Py outperformed TzTz-CMP-Be in the green light-driven selective aerobic oxidation of amines RCH2NHR1 [R = Ph, pyridin-2-yl, thiophen-2-yl, etc.; R1 = H, t-Bu, Bn, 4-fluorobenzyl, etc.]. Remarkable photocatalytic performance was observed in converting a wealth of primary and secondary amines to corresponding imines RCH=NR1 with mol. oxygen (O2) over TzTz-CMP-Py. This work suggests that CMPs can be rationally designed for extensive visible light-driven selective organic transformations.

Journal of Materials Chemistry A: Materials for Energy and Sustainability published new progress about Aromatic imines Role: SPN (Synthetic Preparation), PREP (Preparation). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Quality Control of 3959-07-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Wu, Shaofeng; Geng, Furong; Dong, Jianyu; Liu, Long; Zhou, Yongbo published the artcile< Metal-Free Oxidative Annulation of Phenols and Amines: A General Synthesis of Benzoxazoles>, Product Details of C7H8BrN, the main research area is benzoxazole preparation; phenol amine oxidative annulation.

Under metal-free conditions, a highly general synthesis of benzoxazoles I [R = 5-i-Pr, 5,7-di-ter-Bu, 6-Ph, etc.; R1 = n-Pr, t-Bu, Ph, etc.] direct from abundant and easily available phenols and amines was developed via a modular phenol functionalization controlled by TEMPO. In the reaction, various phenols and primary amines with a broad range of functional groups were compatible, producing structurally and functionally diverse benzoxazoles I without or with trace observation of the byproducts of phenol transformation with amines. The practical synthesis, especially for drug tafamidis, demonstrated decisive advantages in generality, selectivity, efficiency, and atom- and step-economies over traditional methods, even in the cases of low yields. Mechanistically, the radical adducts of TEMPO with ortho-cyclohexa-2,4-dien-1-one radicals rather than the well-recognized cyclohexa-3,5-diene-1,2-diones might serve as intermediates.

Journal of Organic Chemistry published new progress about Aryl halides Role: RCT (Reactant), RACT (Reactant or Reagent). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Product Details of C7H8BrN.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary