Month: April 2022

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 1,3-Dimesityl-1H-imidazol-3-ium tetrafluoroborate, is researched, Molecular C21H25BF4N2, CAS is 286014-53-7, about Access to Fluorescent Azines from N-Heterocyclic Carbene Precursors and N-Tosylhydrazones, the main research direction is triazolopyridine arylidenehydrazono preparation fluorescence rotamerism; imidazole benzimidazole pyrrolotriazole arylidenehydrazono preparation; triazolopyridinium imidazolium benzimidazolium tetrafluoroborate coupling tosyl hydrazone.Category: bromides-buliding-blocks.

An efficient synthesis of azines from the reaction of N-heterocyclic carbene precursors, e.g. I (R1 = Me, Et, Ph), with N-tosylhydrazones R2R3C:NNHTs (R2 = Ph, 4-MeOC6H4, 3-BrC6H4, 1-naphthyl, 2-thienyl, PhCH:CH, etc., R3 = H; R2 = R3 = Ph, 3-F3CC6H4; R2 = Ph, R3 = Me; etc.) has been developed. This method avoids the direct use of diazo compounds and allows the synthesis of structurally diverse azines, e.g. II. The azine II (R1 = R2 = Ph) was further found to exhibit strong yellow fluorescence and showed promise as a reagent for biol. imaging.

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Reference:
Bromide – Wikipedia,
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So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Maruoka, Keiji; Ito, Takayuki; Araki, Yoshitaka; Shirasaka, Tadashi; Yamamoto, Hisashi researched the compound: (S)-3,3′-Dibromo-1,1′-bi-2-naphthol( cas:119707-74-3 ).Name: (S)-3,3′-Dibromo-1,1′-bi-2-naphthol.They published the article 《Efficient synthesis of sterically hindered chiral binaphthol derivatives》 about this compound( cas:119707-74-3 ) in Bulletin of the Chemical Society of Japan. Keywords: binaphthol bistrialkylsilyl chiral; bromobisiloxybinaphthol lithiation rearrangement. We’ll tell you more about this compound (cas:119707-74-3).

Silylation of chiral dibromobinaphthol (R)-I (R = Br, R1 = H) with trialkylsilyl halides gave siloxy derivatives (R)-I (R = Br, R1 = SiR23; R2 = Me, Ph, C6H4CMe3-4, C6H3Me2-3,5; SiR23 = SiMe2CMe3, SiPh2CMe3) (II) in 80-97% yields. Treatment of siloxy derivatives II with Me3CLi gave the corresponding bis(trialkylsilyl)binaphthols (R)-I (R = SiR23, R1H)8 in 80-96% yields. (S)-I (R = SiPh3, R1 = H) was prepared similarly.

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Reference:
Bromide – Wikipedia,
bromide – Wiktionary

HPLC of Formula: 837-52-5. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 7-Chloro-4-(piperazin-1-yl)quinoline, is researched, Molecular C13H14ClN3, CAS is 837-52-5, about Synthesis and biological evaluation of certain new cyclohexane-1-carboxamides as apoptosis inducers. Author is Abd-Allah, Walaa Hamada; Elshafie, Mohamed Fathy.

Series of 1-(N-phenyl-2-(heteroalicyclic-1-yl)acetamido)cyclohexane-1-carboxamide derivatives (5a-m) and 1-(phenyl(heteroalicyclic-1-ylmethyl)amino)cyclohexane-1-carboxamide (6a-f) were designed and synthesized with biol. interest through coupling of 1-(2-chloro-N-phenylacetamido)cyclohexane-1-carboxamide (4) and (phenylamino)cycloakanecarboxamide (2) with different amines. The structures of the target compounds were elucidated via IR, 1H and 13C NMR, MS, and microanal. Compounds 5a-m and 6a-f were evaluated for their in vitro antitumor activity against four different cancer cell lines, MCF-7, HepG2, A549, and Caco-2. Compound 5i exhibited a promising activity against breast cancer cell line (IC50 value = 3.25 μM) compared with doxorubicin (IC50 value = 6.77 μM). Results from apoptosis and cell cycle anal. for compound 5i revealed good antitumor activity against MCF-7 cancer cell line and potent inhibition.

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Reference:
Bromide – Wikipedia,
bromide – Wiktionary

Quality Control of 1,3-Dimesityl-1H-imidazol-3-ium tetrafluoroborate. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 1,3-Dimesityl-1H-imidazol-3-ium tetrafluoroborate, is researched, Molecular C21H25BF4N2, CAS is 286014-53-7, about Targeted and Systematic Approach to the Study of pKa Values of Imidazolium Salts in Dimethyl Sulfoxide. Author is Dunn, Michelle H.; Konstandaras, Nicholas; Cole, Marcus L.; Harper, Jason B..

A range of more than 25 imidazolium salts, chosen for their differing steric and electronic features, were prepared, and their pKa values were determined using the bracketing indicator method. Through the systematic change in the structure of the imidazolium cation, the effect of varying substituents at each position on the heterocyclic ring was determined; particularly, the transmission of electronic effects was quantified using Hammett parameters. These new data give an indication of the strength of base required for deprotonation and the potential to correlate these data with the nucleophilicity of the corresponding carbenes.

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Reference:
Bromide – Wikipedia,
bromide – Wiktionary

So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Qu, Bo; Haddad, Nizar; Rodriguez, Sonia; Sieber, Joshua D.; Desrosiers, Jean-Nicolas; Patel, Nitinchandra D.; Zhang, Yongda; Grinberg, Nelu; Lee, Heewon; Ma, Shengli; Ries, Uwe Jorg; Yee, Nathan K.; Senanayake, Chris H. researched the compound: (S)-3,3′-Dibromo-1,1′-bi-2-naphthol( cas:119707-74-3 ).Application In Synthesis of (S)-3,3′-Dibromo-1,1′-bi-2-naphthol.They published the article 《Ligand-Accelerated Stereoretentive Suzuki-Miyaura Coupling of Unprotected 3,3′-Dibromo-BINOL》 about this compound( cas:119707-74-3 ) in Journal of Organic Chemistry. Keywords: stereoretentive Suzuki unprotected bromo BINOL enantioselective synthesis arylated BINOL; ligand accelerated palladium catalyzed stereoretentive Suzuki bromo BINOL. We’ll tell you more about this compound (cas:119707-74-3).

An efficient synthesis of the enantiomerically pure 3,3′-bis-arylated BINOL derivatives is accomplished through the palladium-catalyzed Suzuki-Miyaura coupling of the unprotected 3,3′-dibromo-BINOL with complete retention of enantiopurity. The active catalyst system Pd(OAc)2/BI-DIME [BI-DIME = I, (S)- or (±)-I] has enabled mild reaction conditions at palladium loads as low as 500 ppm.

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Reference:
Bromide – Wikipedia,
bromide – Wiktionary

Related Products of 17696-11-6. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 8-Bromooctanoic acid, is researched, Molecular C8H15BrO2, CAS is 17696-11-6, about Discovery of potent epidermal growth factor receptor (EGFR) degraders by proteolysis targeting chimera (PROTAC). Author is Zhang, Hao; Zhao, Hong-Yi; Xi, Xiao-Xiao; Liu, Yan-Jie; Xin, Minhang; Mao, Shuai; Zhang, Jun-Jie; Lu, A-Xin; Zhang, San-Qi.

Herein, the discovery of small mol. EGFR degraders based on the proteolysis targeting chimera (PROTAC) strategy was reported. In the present study, 13 EGFR degraders containing pyrido[3,4-d]pyrimidine moiety I [X = CH2C(O)NHCH2CH2C(O), CH2CH2CH2CH2C(O), CH2CH2CH2CH2CH2C(O), etc.], II [C = CH2C(O)NHCH2CH2C(O), CH2CH2CH2CH2CH2CH2CH2C(O)] and III [X = CH2CH2CH2CH2C(O), CH2CH2OCH2CH2OCH2CH2, CH2CH2CH2CH2CH2CH2C(O), etc.] were designed and synthesized. Promising PROTACs I [X = CH2CH2CH2CH2CH2CH2CH2C(O)] and III [X = CH2CH2CH2CH2CH2CH2C(O)] induced degradation of EGFR in HCC827 cells with the DC50 values of 45.2 and 34.8 nM, resp. Cellular protein-controlling machinery ubiquitin proteasome system (UPS) was involved in the degradation process. Furthermore, the degraders I [X = CH2CH2CH2CH2CH2CH2CH2C(O)] and III [X = CH2CH2CH2CH2CH2CH2C(O)] could significantly induce the apoptosis of HCC827 cells and arrest the cells in G1 phase. These findings demonstrated that compounds I [X = CH2CH2CH2CH2CH2CH2CH2C(O)] and III [X = CH2CH2CH2CH2CH2CH2C(O)] could serve as effective EGFRdel19-targeting degraders in HCC827 cells. v.

Here is just a brief introduction to this compound(17696-11-6)Related Products of 17696-11-6, more information about the compound(8-Bromooctanoic acid) is in the article, you can click the link below.

Reference:
Bromide – Wikipedia,
bromide – Wiktionary

Quality Control of (S)-3,3′-Dibromo-1,1′-bi-2-naphthol. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: (S)-3,3′-Dibromo-1,1′-bi-2-naphthol, is researched, Molecular C20H12Br2O2, CAS is 119707-74-3, about Iridium-Catalyzed Asymmetric Allylic Amination Reactions with N-Aryl Phosphoramidite Ligands. Author is Zhang, Xiao; Liu, Wen-Bo; Cheng, Qiang; You, Shu-Li.

N-aryl phosphoramidite ligands were synthesized, and the Ir complexes derived from these novel ligands were proven to be efficient catalysts for asym. intermol. allylic amination reactions. This C-N bond forming process readily accommodates a diverse range of amines and allylic carbonates, especially for the previously challenging ortho-substituted cinnamyl substrates. Also, isolation and characterization of the corresponding (π-allyl)-Ir complex K1 reveal that the active iridacycle is generated through a C(sp2)-H bond insertion of tetrahydroquinoline of the ligand.

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Bromide – Wikipedia,
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Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 837-52-5, is researched, SMILESS is C1=C(Cl)C=C2C(=C1)C(=CC=N2)N3CCNCC3, Molecular C13H14ClN3Journal, Article, Research Support, Non-U.S. Gov’t, Journal of Medicinal Chemistry called Optimization of 4-Aminoquinoline/Clotrimazole-Based Hybrid Antimalarials: Further Structure-Activity Relationships, in Vivo Studies, and Preliminary Toxicity Profiling, Author is Gemma, Sandra; Camodeca, Caterina; Sanna Coccone, Salvatore; Joshi, Bhupendra P.; Bernetti, Matteo; Moretti, Vittoria; Brogi, Simone; Bonache de Marcos, Maria Cruz; Savini, Luisa; Taramelli, Donatella; Basilico, Nicoletta; Parapini, Silvia; Rottmann, Matthias; Brun, Reto; Lamponi, Stefania; Caccia, Silvio; Guiso, Giovanna; Summers, Robert L.; E. Martin, Rowena; Saponara, Simona; Gorelli, Beatrice; Novellino, Ettore; Campiani, Giuseppe; Butini, Stefania, the main research direction is antimalarial aminoquinoline clotrimazole hybrid preparation toxicity pharmacokinetics modeling; structure activity antimalarial aminoquinoline clotrimazole hybrid preparation modeling.Computed Properties of C13H14ClN3.

Despite recent progress in the fight against malaria, the emergence and spread of drug-resistant parasites remains a serious obstacle to the treatment of infections. We recently reported the development of a novel antimalarial drug that combines the 4-aminoquinoline pharmacophore of chloroquine with that of clotrimazole-based antimalarials. Here we describe the optimization of this class of hybrid drug through in-depth structure-activity relation studies. Antiplasmodial properties and mode of action were characterized in vitro and in vivo, and interactions with the parasite’s ‘chloroquine resistance transporter’ were investigated in a Xenopus laevis oocyte expression system. These tests indicated that piperazine derivatives 4b and 4d may be suitable for coadministration with chloroquine against chloroquine-resistant parasites. The potential for metabolism of the drugs by cytochrome P 450 was determined in silico, and the lead compounds were tested for toxicity and mutagenicity. A preliminary pharmacokinetic anal. undertaken in mice indicated that compound 4b has an optimal half-life.

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Bromide – Wikipedia,
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The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 6-Bromo-3-methyl-1H-indole(SMILESS: CC1=CNC2=C1C=CC(Br)=C2,cas:1219741-50-0) is researched.Related Products of 60827-45-4. The article 《Facile synthesis of 9H-pyrrolo[1,2-a]indoles via Bronsted acid catalyzed cascade reactions》 in relation to this compound, is published in Chemical Communications (Cambridge, United Kingdom). Let’s take a look at the latest research on this compound (cas:1219741-50-0).

An efficient Bronsted acid catalyzed Friedel-Crafts alkenylation/1,6-addition/condensation cascade reaction has been developed. This protocol enables effective access to various highly functionalized 9H-pyrrolo[1,2-a]indoles I (R1 = Bu, 3-chlorophenyl, thiophen-2-yl, etc.; R2 = Me, thiophen-2-yl, naphthalen-1-yl, etc.; R3 = H, 7-Me, 8-MeO, 6-F, etc.; R4 = Me, phenyl; R5 = H, 6-Cl, 7-MeO, etc.) in moderate to high yields. Mechanistic studies indicate that the in situ vinylogous reactivity intermediate might be formed in the catalytic system.

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So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Ye, Peijun; Li, Qiuyun; Bai, Zhongsheng; Dong, Kun; Liu, Qiancai researched the compound: (S)-3,3′-Dibromo-1,1′-bi-2-naphthol( cas:119707-74-3 ).Synthetic Route of C20H12Br2O2.They published the article 《Chiral 9,9′-binaphtho[2,3-b]furans》 about this compound( cas:119707-74-3 ) in Heterocycles. Keywords: diiodo diacetoxybinaphthalene alkyne Sonogashira coupling cylization; binaphthofuran preparation. We’ll tell you more about this compound (cas:119707-74-3).

A series of novel difuro-fused binaphthalenes were reported. Synthetic methods include methylation, halogenation, Sonogashira coupling as well as base-mediated cyclization were employed to furnish the title compounds from chiral BINOL (R-BINOL and S-BINOL). The final products were confirmed by NMR spectra and mass spectra.

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Reference:
Bromide – Wikipedia,
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