Category: bromides-buliding-blocks

Sun, Wenhao; Xiang, Yonggang; Jiang, Zhihui; Wang, Shengyao; Yang, Nan; Jin, Shangbin; Sun, Linhao; Teng, Huailong; Chen, Hao published the artcile< Designed polymeric conjugation motivates tunable activation of molecular oxygen in heterogeneous organic photosynthesis>, Product Details of C7H8BrN, the main research area is thioether photocatalyst oxidation; sulfoxide preparation; aryl methanamine photocatalyst oxidative coupling reaction; diaryl azapropene preparation.

Herein, the first identification of tunable mol. oxygen activation induced by polymeric conjugation in nonmetallic conjugated microporous polymers (CMP) was reported. The conjugation between these can be achieved by the introduction of alkynyl groups. CMP-A with an alkynyl bridge facilitates the intramol. charge mobility while CMP-D, lacking an alkynyl group enhances the photoexcited carrier build-up on the surface from diffusion. These different processes dominate the directed ROS generation of the superoxide radical (·O-2) and singlet oxygen (1O2), resp. This theory is substantiated by the different performances of these CMPs in the aerobic oxidation of sulfides and the dehydrogenative coupling of amines, and could provide insight into the rational design of CMPs for various heterogeneous organic photosynthesis.

Science Bulletin 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, Product Details of C7H8BrN.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Kurppa, Kari J.; Liu, Yao; To, Ciric; Zhang, Tinghu; Fan, Mengyang; Vajdi, Amir; Knelson, Erik H.; Xie, Yingtian; Lim, Klothilda; Cejas, Paloma; Portell, Andrew; Lizotte, Patrick H.; Ficarro, Scott B.; Li, Shuai; Chen, Ting; Haikala, Heidi M.; Wang, Haiyun; Bahcall, Magda; Gao, Yang; Shalhout, Sophia; Boettcher, Steffen; Shin, Bo Hee; Thai, Tran; Wilkens, Margaret K.; Tillgren, Michelle L.; Mushajiang, Mierzhati; Xu, Man; Choi, Jihyun; Bertram, Arrien A.; Ebert, Benjamin L.; Beroukhim, Rameen; Bandopadhayay, Pratiti; Awad, Mark M.; Gokhale, Prafulla C.; Kirschmeier, Paul T.; Marto, Jarrod A.; Camargo, Fernando D.; Haq, Rizwan; Paweletz, Cloud P.; Wong, Kwok-Kin; Barbie, David A.; Long, Henry W.; Gray, Nathanael S.; Janne, Pasi A. published the artcile< Treatment-Induced Tumor Dormancy through YAP-Mediated Transcriptional Reprogramming of the Apoptotic Pathway>, Recommanded Product: 3-Bromobenzotrifluoride, the main research area is tumor dormancy YAP transcriptional reprogramming apoptotic pathway; YAP; dormancy; drug resistance; drug tolerance; epidermal growth factor receptor; lung cancer; senescence.

Eradicating tumor dormancy that develops following epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI) treatment of EGFR-mutant non-small cell lung cancer, is an attractive therapeutic strategy but the mechanisms governing this process are poorly understood. Blockade of ERK1/2 reactivation following EGFR TKI treatment by combined EGFR/MEK inhibition uncovers cells that survive by entering a senescence-like dormant state characterized by high YAP/TEAD activity. YAP/TEAD engage the epithelial-to-mesenchymal transition transcription factor SLUG to directly repress pro-apoptotic BMF, limiting drug-induced apoptosis. Pharmacol. co-inhibition of YAP and TEAD, or genetic deletion of YAP1, all deplete dormant cells by enhancing EGFR/MEK inhibition-induced apoptosis. Enhancing the initial efficacy of targeted therapies could ultimately lead to prolonged treatment responses in cancer patients.

Cancer Cell published new progress about Aging, animal. 401-78-5 belongs to class bromides-buliding-blocks, and the molecular formula is C7H4BrF3, Recommanded Product: 3-Bromobenzotrifluoride.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Dewar, Michael J. S.; Poesche, Werner H. published the artcile< New heteroaromatic compounds. XVIII. Boron-containing analogs of benz[a]anthracene>, Name: 4-Bromoisobenzofuran-1,3-dione, the main research area is .

The amines, 2,3-Ph(H2N)C10H6 (I) and 2-(2-H2NC6H4)C10H7 (II) on treatment with BCl3 and a catalytic amount of AlCl3 in boiling xylene gave the corresponding chloroborazarobenz[a]anthracenes (III, R = Cl) (IV) and (V, R = Cl) (VI). NaNO2 (55 ml., 2M) in concentrated H2SO4 stirred below 25° with addition of 18.8 g. 3,2-O2N(H2N)C10H6 in 670 ml. AcOH (boiled and cooled rapidly to 20°) and the mixture kept 15 min., added with stirring to 38 g. CuBr in 200 ml. 48% HBr and kept overnight, and diluted with H2O yielded 54% 3,2-Br(O2N)C10H6, m. 79-80°. The compound (20.8 g.) and 55 g. PhI stirred 36 hrs. at 110° with 31.8 g. Cu bronze yielded 74% 3,2-Ph(O2N)C10H6 (VII), m. 96.0-6.8° (MeOH). VII (6.0 g.) and 0.2 g. 10% Pd-C in 230 ml. boiling alc. treated gradually with 20 ml. N2H4.H2O and kept 1 hr. yielded quant. I, m. 82.7-3.5° (90% MeOH). I (10 g.) in 160 ml. dry xylene added (N atm.) slowly to 7.0 g. BCl3 in 45 ml. ice-cold xylene and the mixture treated with 0.2 g. AlCl3, the mixture heated to 140° in 4 hrs. and the temperature maintained 16 hrs., cooled and taken up in 750 ml. 2:1 Et2O-C6H6, the H2O-washed and dried (MgSO4) solution evaporated on a steam bath and the residue taken up in 500 ml. hot MeOH, the solution concentrated and kept at -15°, the product recovered from hot MeOH and the purified material (4.2 g.) recrystallized using an efficient dry box gave III (R = OMe) (VIII), m. 159° (evacuated capillary). The mother liquors gave 0.85 g. III (R = 1/2 O), C32H22B2N2O, m. 322°. VIII (1.3 g.) in 40 ml. dry Et2O stirred (H2O-free atm.) at 0° with addition of 12.5 ml. 0.6M MeMgBr and the mixture stirred 24 hrs. with rise of temperature to 20, the filtered solution evaporated and the residue sublimed at 150°/0.005 mm. gave III (R = Me) (VIIIa), m. 160.0-1.3° (petr. ether, b. 60-8°). LiAlH4 (1.35 millimoles) added to 3.86 millimoles VIII in 40 ml. dry Et2O and the mixture refluxed 2 hrs. with 0.45 millimole AlCl3 gave 5,6-borazarobenz[a]anthracene (III, R = H) (IX), m. 139° (decomposition). Cu bronze (46.5 g.), 65.0 g. 2-IC10H7, and 56.0 g. 1,2-Br(O2N)C6H4 stirred 40 hrs. at 110° gave 60% 2-(o-O2NC6H4)C10H7 (X), m. 101° (MeOH). X (9.0 g.) in 450 ml. alc. hydrogenated at 20° and 30 lb./in.2 with 0.3 g. 10% Pd-C and the filtered solution concentrated gave 6.0g. II, m. 95-7°. X (32 g.) and 1.0 g. 10% Pd-C refluxed 1 hr. in 1400 ml. alc. with gradual addition of 45 ml. N2H4.H2C and the filtered solution concentrated gave 22 g. II. II (22.0 g.) in 350 ml. dry xylene added slowly with stirring to 13.0 g. BCl3 in 100 ml. ice-cold xylene and the mixture heated 4 hrs. at 140° with 0.5 g. AlCl3 and stirred 16 hrs. at 140° gave 10.4 g. V (R = 1/2 O) (XI), m. 261-4°, recrystallized from PhMe(C) to give an analytical sample, m. 275.5°. Further concentration of the mother liquors gave a 2nd crop of XI (4.8 g., m. 264-5°), and evaporation of the filtrate yielded 8.6 g. residue (XII), m. 225-47°. The ether XI (12.7 g.) taken up in 500 ml. hot absolute MeOH and concentrated to 350 ml., cooled and the product (10.5 g., m. 174-6°) recrystallized from MeOH (C) gave V (R = OMe) (XIII), m. 183-4° (evacuated capillary). The filtrate evaporated and the residue combined with XII, the mixture recrystallized from absolute MeOH to give 4.80 g. XIII, and the filtrate evaporated in vacuo gave a dark brown oil with an ultraviolet spectrum identical with that of XIII and containing no other bands. XIII (2.6 g.) stirred at 20° in 100 ml. dry Et2O with dropwise addition of 15 ml. M MeMgBr in Et2O and the mixture stirred 2 hrs., the filtered solution diluted with moist Et2O and shaken with H2O, the organic layer dried over CaCl2 and evaporated yielded 87% product, m. 136-40°, sublimed at 120°/0.1 mm. to give V (R = Me) (XIV), m. 141-3°. XIII (1.00 g.) stirred at 0° in 30 ml. dry Et2O with gradual addition of 1.00 millimole LiAlH4 (standardized Et2O solution) and the mixture refluxed 2 hrs. with 0.04 g. AlCl3, the filtered solution evaporated and the residue sublimed at 120°/0.005 mm. gave 65% V (R = H) (XV), m. 136.5-7.0° (decomposition). XIII (2.0 g.) in 20 ml. hot AcOH treated with 10 ml. concentrated HCl and the mixture cooled quickly to 5°, diazotized with 0.60 g. NaNO2 in a min. of H2O and kept 2 hrs., added with stirring to 300 ml. boiling H2O and the mixture boiled 30 min., kept overnight and the precipitate recrystallized twice from PhMe(C) gave 64% 6-hydroxy-6,5-boroxarobenz[a]-anthracene (XVI), m. 279.5-81.0°. The cyclization of II to V rather than to a borazachrysene illustrated very clearly the large steric requirements of the Friedel-Crafts reaction. The charge transfer spectra of the complexes formed by III and V with tetracyanoethylene (XVII) were determined in CHCl3. No difficulty was encountered with the Me or MeO derivatives, VIII, VIIIa, XIII, or XIV, all of which gave stable colorations with XVII, but the parent compounds, IX and XV, reacted rapidly with the acceptor. XV in CHCl3 and XVII in CHCl3 initially gave a green mixture rapidly changing to violet before fading and forming a white precipitate The ultraviolet spectrum of the final colorless solution was identical with that of XIII, suggesting that EtOH in the CHCl3 was forming V (R = OEt) and precipitating (NC)2CHCH(CN)2. The wave lengths of the charge transfer spectra of XVII complexes are given (compound and wave lengths of charge transfer band in A given): IX, 614; VIII, 627; VIIIa, 620; XV, 690, 477; XIII, 701, 500; XIV, 704, 486. The π-electron distribution in these compounds is probably too uneven for first-order perturbation theory to be applicable. The ultra violet spectra of IX and XV in methylcyclohexane and alc.-free CHCl3, and of VIII, XIII, VIIIa, and XIV in CHCl3 were tabulated with the spectrum of benz[a]anthracene (XVIII) in methylcyclohexane listed for comparison. The estimated band maximum (mμ of π-π transitions in methyl cyclohexane for XVIII, IX, and XV were tabulated. The spectra of IX and XV are very similar to that of XVIII, the main difference being an increase in intensity of the α-bands in the hetero aromatics, in accordance with theory.

Journal of the American Chemical Society published new progress about Entropy. 82-73-5 belongs to class bromides-buliding-blocks, and the molecular formula is C8H3BrO3, Name: 4-Bromoisobenzofuran-1,3-dione.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Jiang, Xueyang; Zhou, Junting; Wang, Yang; Liu, Xin; Xu, Kaiying; Xu, Jian; Feng, Feng; Sun, Haopeng published the artcile< PROTACs suppression of GSK-3β, a crucial kinase in neurodegenerative diseases>, Category: bromides-buliding-blocks, the main research area is neurodegenerative diseases proteolysis targeting chimera GSK 3beta protein degradation; Glycogen synthase kinase 3β; Neurodegenerative diseases; Proteolysis targeting chimera.

Glycogen synthase kinase 3β (GSK-3β) is involved in a variety of diseases such as neurodegenerative diseases, bipolar disorder, and diabetes. In this study, a series of heterobifunctional small mol. proteolysis targeting chimera (PROTAC) were designed and synthesized based on E3 ubiquitin ligase cereblon (CRBN). Most of PROTACs displayed good inhibitory activity, with the IC50 values at the double-digits nanomolar levels and moderate protein degradation ability against GSK-3β. Western-blot data showed compound PG21(I) can effectively degrade GSK-3β in a dose-dependent manner, which can induce 44.2% protein degradation at 2.8μM. Further pharmacol. experiments revealed that the ability of PG21 to degrade GSK-3β is mediated by the ubiquitin-proteasome system (UPS). In addition, PG21 protects against glutamate-induced cell death in HT-22 cells. As the first PROTAC example to degrade GSK-3β protein, the present study has provided potential candidates for further investigation in the biol. function of GSK-3β protein and its association with diseases.

European Journal of Medicinal Chemistry published new progress about Cereblons Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 337536-14-8 belongs to class bromides-buliding-blocks, and the molecular formula is C9H8Br2O2, Category: bromides-buliding-blocks.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Li, Peihe; Wang, Yingying; Wang, Xia; Wang, Yin; Liu, Ying; Huang, Keke; Hu, Jing; Duan, Limei; Hu, Changwen; Liu, Jinghai published the artcile< Selective Oxidation of Benzylic C-H Bonds Catalyzed by Cu(II)/{PMo12}>, Name: 1-Bromo-3-ethylbenzene, the main research area is selective oxidation benzylic carbon hydrogen bond copper polyoxometalate catalyst; ketone preparation selective oxidation benzylic carbon hydrogen mechanism.

Precise catalytic regulation of carbon radical generation by a highly active oxygen radical to abstract the H atom in a C-H bond is an effective method for the selective activation of C-H synthetic chem. Herein, we report a facile catalyst system with com. available copper(II)/{PMo12} to form a tert-butanol radical intermediate for the selective oxidation of benzylic C-H bonds. The reaction shows a broad range of substrates (benzyl methylene, benzyl alcs.) with good functional group tolerance and chem. selectivity. The corresponding carbonyl compounds were synthesized with good yields under mild conditions. DFT calculations and exptl. anal. further demonstrated a reasonable carbon radical mechanism for this type of organic transformation reaction.

Journal of Organic Chemistry published new progress about Aralkyl alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 2725-82-8 belongs to class bromides-buliding-blocks, and the molecular formula is C8H9Br, Name: 1-Bromo-3-ethylbenzene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Sander, Kerstin; Galante, Eva; Gendron, Thibault; Yiannaki, Elena; Patel, Niral; Kalber, Tammy L.; Badar, Adam; Robson, Mathew; Johnson, Sean P.; Bauer, Florian; Mairinger, Severin; Stanek, Johann; Wanek, Thomas; Kuntner, Claudia; Kottke, Tim; Weizel, Lilia; Dickens, David; Erlandsson, Kjell; Hutton, Brian F.; Lythgoe, Mark F.; Stark, Holger; Langer, Oliver; Koepp, Matthias; Arstad, Erik published the artcile< Development of Fluorine-18 Labeled Metabolically Activated Tracers for Imaging of Drug Efflux Transporters with Positron Emission Tomography>, SDS of cas: 128577-47-9, the main research area is fluorine 18 PET tracer imaging drug efflux transporter.

Increased activity of efflux transporters, e.g., P-glycoprotein (P-gp) and breast cancer resistance protein (BCRP), at the blood-brain barrier is a pathol. hallmark of many neurol. diseases, and the resulting multiple drug resistance represents a major clin. challenge. Noninvasive imaging of transporter activity can help to clarify the underlying mechanisms of drug resistance and facilitate diagnosis, patient stratification, and treatment monitoring. We have developed a metabolically activated radiotracer for functional imaging of P-gp/BCRP activity with positron emission tomog. (PET). In preclin. studies, the tracer showed excellent initial brain uptake and clean conversion to the desired metabolite, although at a sluggish rate. Blocking with P-gp/BCRP modulators led to increased levels of brain radioactivity; however, dynamic PET did not show differential clearance rates between treatment and control groups. Our results provide proof-of-concept for development of prodrug tracers for imaging of P-gp/BCRP function in vivo but also highlight some challenges associated with this strategy.

Journal of Medicinal Chemistry published new progress about ATP-binding cassette transporter ABCG2 Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 128577-47-9 belongs to class bromides-buliding-blocks, and the molecular formula is C9H8BrFO2, SDS of cas: 128577-47-9.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Jia, Min-Qiang; Li, Guo-Tai; You, Shu-Li published the artcile< DPEN-derived triazolium salts catalyzed annulation reactions of α,β-unsaturated aldehydes with 1,3-dicarbonyl compounds>, Application of C9H7BrO, the main research area is unsaturated aldehyde dicarbonyl enantioselective annulation triazolium catalyst mol sieves; hydropyrone asym synthesis.

Enantioselective N-heterocyclic carbene-catalyzed annulation reactions of α,β-unsaturated aldehydes with various dicarbonyl compounds were carried out. With 10 mol% of a (1R,2R)-1,2-diphenylethylamine- (DPEN)-derived triazolium salt, 15 mol% of DBU, 4 Å mol. sieves, and 100 mol% of quinone as the oxidant, various 3,4-dihydro-α-pyrones were obtained in good yields and enantioselectivity (≤92% yield, 88% ee).

International Journal of Chemistry (Mumbai, India) published new progress about 1,3-Dicarbonyl compounds Role: RCT (Reactant), RACT (Reactant or Reagent). 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, Application of C9H7BrO.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Chen, Qiang; Baumgarten, Martin; Wagner, Manfred; Hu, Yunbin; Hou, Ian Cheng-Yi; Narita, Akimitsu; Muellen, Klaus published the artcile< Dicyclopentaannelated Hexa-peri-hexabenzocoronenes with a Singlet Biradical Ground State>, Related Products of 576-83-0, the main research area is dicyclopentaannelated hexa peri hexabenzocoronene preparation singlet biradical ground state; hexabenzocoronene low bandgap optical electrochem ESR DFT; dicyclopentaannelation; hexa-peri-hexabenzocoronene; low energy gap; not-fully benzenoid PAH; open-shell biradical.

Synthesis of two dicyclopentaannelated hexa-peri-hexabenzocoronene (PHBC) regioisomers was carried out, using nonplanar oligoaryl precursors with fluorenyl groups: mPHBC I with two pentagons in the “”meta””-configuration was obtained as a stable mol., while its structural isomer with the “”para””-configuration, pPHBC II, could be generated and characterized only in situ due to its high chem. reactivity. Both PHBCs exhibit low energy gaps, as reflected by UV-vis-NIR absorption and electrochem. measurements. They also show open-shell singlet ground states according to ESR (EPR) measurements and d. functional theory (DFT) calculations The use of fully benzenoid HBC as a bridging moiety leads to significant singlet biradical characters (y0) of 0.72 and 0.96 for mPHBC I and pPHBC II, resp., due to the strong rearomatization tendency of the HBC π-system; these values are among the highest for planar carbon-centered biradical mols. The incorporation of fully unsaturated pentagons strongly perturbs the aromaticity of the parent HBC and makes the constituted benzene rings less aromatic or antiarom. These results illustrate the high impact of cyclopentaannelation on the electronic structures of fully benzenoid polycyclic aromatic hydrocarbons (PAHs) and open up a new avenue towards open-shell PAHs with prominent singlet biradical characters.

Angewandte Chemie, International Edition published new progress about Biradicals Role: FMU (Formation, Unclassified), RCT (Reactant), FORM (Formation, Nonpreparative), RACT (Reactant or Reagent). 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Related Products of 576-83-0.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Wang, Zhan-Yong; Yang, Ting; Wang, Kai-Kai; Chen, Rongxiang; Liu, Menghan; Liu, Hongxin published the artcile< Oxidative N-heterocyclic carbene-catalyzed [3 + 3] annulation reaction of enals with benzofuran-3-ones: efficient access to benzofuran-fused δ-lactones>, COA of Formula: C9H7BrO, the main research area is benzofuranone enal azacyclic carbene catalyst heterocyclization; dihydropyranobenzofuranone preparation.

A facile route to benzofuran-fused δ-lactones was developed via an N-heterocyclic carbene-catalyzed [3 + 3] annulation reaction, giving the expected products in high yields (up to 99%) with excellent enantioselectivities (up to 98% ee). It should be noted that benzofuran-fused pyrones can be obtained stepwise in one pot with excellent yields (up to 96%) by using this methodol.

Organic Chemistry Frontiers published new progress about Benzofurans Role: RCT (Reactant), RACT (Reactant or Reagent). 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, COA of Formula: C9H7BrO.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Zhang, Huan-Huan; Zhan, Guo-Peng; Liu, Zi-Kun; Wu, Chuan-De published the artcile< Photocatalytic Hydrogen Evolution Coupled with Production of Highly Value-Added Organic Chemicals by a Composite Photocatalyst CdIn2S4@MIL-53-SO3Ni1/2>, COA of Formula: C7H8BrN, the main research area is photocatalytic hydrogen evolution catalyst cadmium indium sulfide; hydrogen evolution; metal-organic frameworks; photocatalysis; suspended ion catalysts; water splitting.

Photocatalytic water splitting coupled with the production of highly value-added organic chems. is of significant importance, which represents a very promising pathway for transforming green solar energy into chem. energy. Herein, we report a composite photocatalyst CdIn2S4@MIL-53-SO3Ni1/2, which is highly efficient on prompting water splitting for the production of H2 in the reduction half-reaction and selective oxidation of organic mols. for the production of highly value-added organic chems. in the oxidation half-reaction under visible light irradiation The superior photocatalytic properties of the composite photocatalyst CdIn2S4@MIL-53-SO3Ni1/2 should be ascribed to coating suspended ion catalyst (SIC), consisting of redox-active NiII ions in the anionic pores of coordination network MIL-53-SO3-, on the surface of photoactive CdIn2S4, which endows photogenerated electron-hole pairs sep. more efficiently for high rate production of H2 and selective production of highly value-added organic products, demonstrating great potential for practical applications.

Chemistry – An Asian Journal published new progress about Band gap. 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, COA of Formula: C7H8BrN.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary