Category: bromides-buliding-blocks

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Transesterification reactions. Thiophenols with ethyl β-ethoxyacrylates》. Authors are Croxall, W. J.; Freimiller, L. R.; Shropshire, E. Y..The article about the compound:Ethyl 3-Ethoxy-2-Propenoatecas:1001-26-9,SMILESS:O=C(OCC)/C=C/OCC).Reference of Ethyl 3-Ethoxy-2-Propenoate. Through the article, more information about this compound (cas:1001-26-9) is conveyed.

cf. C.A. 44, 9917f. PhSH (110 g.) and 144 g. EtOCH:CHCO2Et, distilled from 1 g. NaHSO4, give 91% EtOH and 87% Et β-(phenylmercapto)acrylate (I), b2.3 145-50°, n20D 1.5808; p-tolyl analog, b0.5 137-8°, n20D 1.5752, 86%; p-chlorophenyl analog, b1 147°, n20D 1.5920, 82%; 3,4-dichlorophenyl analog, b1 152-4°, n20D 1.6018, 80%. I (50 g.) and 15.8 g. KOH in 100 ml. H2O, refluxed 2 hrs., give 90% β-(phenylmercapto)acrylic acid which, recrystallized from petr. ether-Me2CO, gives 63 g. product m. 127-8.5° and 6 g. m. 83-6°; these are cis-trans isomers. β-(p-Tolylmercapto)acrylic acid, m. 136-8° and 104-7°, 92%; p-chlorophenyl analog, m. 98-112°, 90%; 3,4-dichlorophenyl analog, m. 98-128°, 87%.

As far as I know, this compound(1001-26-9)Reference of Ethyl 3-Ethoxy-2-Propenoate can be applied in many ways, which is helpful for the development of experiments. Therefore many people are doing relevant researches.

Reference:
Bromide – Wikipedia,
bromide – Wiktionary

Formula: C8H15BrO2. 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. Compound: 8-Bromooctanoic acid, is researched, Molecular C8H15BrO2, CAS is 17696-11-6, about Photoredox-catalyzed decarboxylative alkylation/cyclization of alkynylphosphine oxides: a metal- and oxidant-free method for accessing benzo[b]phosphole oxides.

By photoredox-catalysis, alkylation/aryl C-H cyclization of readily available alkynylphosphine oxides towards benzo[b]phospholes has been realized under metal- and oxidant-free conditions at room temperature This reaction readily incorporates various functionalized alkyl groups into the benzo[b]phosphole skeletons, representing a mild and versatile tool for the preparation of valuable phosphole compounds

As far as I know, this compound(17696-11-6)Formula: C8H15BrO2 can be applied in many ways, which is helpful for the development of experiments. Therefore many people are doing relevant researches.

Reference:
Bromide – Wikipedia,
bromide – Wiktionary

Application In Synthesis of (S)-3,3′-Dibromo-1,1′-bi-2-naphthol. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: (S)-3,3′-Dibromo-1,1′-bi-2-naphthol, is researched, Molecular C20H12Br2O2, CAS is 119707-74-3, about Divergent synthesis of chiral heterocycles via sequencing of enantioselective three-component reactions and one-pot subsequent cyclization reactions. Author is Tang, Min; Xing, Dong; Huang, Haoxi; Hu, Wenhao.

A highly efficient sequencing of catalytic asym. three-component reactions of alcs., diazo compounds and aldimines/aldehydes with one-pot subsequent cyclization reactions was reported. The development of a robust and versatile Rh(II)/Zr(IV)-BINOL co-catalytic system not only gives high diastereo- and enantioselective controls of the three-component reaction, but also shows excellent functionality tolerances that allow a wide range of functionalities to be pre-installed in each component and readily undergo one-pot subsequent cyclization reactions, thus providing rapid and diversity-oriented synthesis (DOS) of different types of chiral nitrogen- and/or oxygen-containing polyfunctional heterocycles, I, II, III and IV.

There is still a lot of research devoted to this compound(SMILES：OC1=C(Br)C=C2C=CC=CC2=C1C3=C4C=CC=CC4=CC(Br)=C3O)Application In Synthesis of (S)-3,3′-Dibromo-1,1′-bi-2-naphthol, and with the development of science, more effects of this compound(119707-74-3) can be discovered.

Reference:
Bromide – Wikipedia,
bromide – Wiktionary

Quality Control of 7-Chloro-4-(piperazin-1-yl)quinoline. 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. Compound: 7-Chloro-4-(piperazin-1-yl)quinoline, is researched, Molecular C13H14ClN3, CAS is 837-52-5, about N-Propargylated isatin-Mannich mono- and bis-adducts: Synthesis and preliminary analysis of in vitro activity against Tritrichomonas foetus.

Cu(I)Cl promoted synthesis of N-propargylated-isatin Mannich mono- and bis-adducts, e.g. I [R = H, Me, Cl, etc.] with an extension towards the synthesis of N-propargylated-isatin-7-chloroquinoline conjugates was described. The synthesized scaffolds were evaluated for their in vitro activity against the veterinary protozoal pathogen Tritrichomonas fetus and cytotoxicity against human prostate cancer cell line. The preliminary evaluation data revealed the enhancement in the activity profiles with the introduction of 7-chloroquinoline ring with the most active conjugates I [R = H, Cl, Me] exhibiting IC50 of 22.2, 11.3 and 24.5 μM resp. against T. fetus and minimal toxicity against human prostate cell lines.

There is still a lot of research devoted to this compound(SMILES：C1=C(Cl)C=C2C(=C1)C(=CC=N2)N3CCNCC3)Quality Control of 7-Chloro-4-(piperazin-1-yl)quinoline, and with the development of science, more effects of this compound(837-52-5) can be discovered.

Reference:
Bromide – Wikipedia,
bromide – Wiktionary

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Pyro-Borates, Spiro-Borates, and Boroxinates of BINOL-Assembly, Structures, and Reactivity, published in 2017-08-02, which mentions a compound: 119707-74-3, Name is (S)-3,3′-Dibromo-1,1′-bi-2-naphthol, Molecular C20H12Br2O2, Safety of (S)-3,3′-Dibromo-1,1′-bi-2-naphthol.

VANOL and VAPOL ligands are known to react with three equivalent of B(OPh)3 to form a catalytic species that contains a boroxinate core with three boron atoms, and these have proven to be effective catalysts for a number of reactions. However, it was not known whether the closely related BINOL ligand will likewise form a boroxinate species. It had simply been observed that mixtures of BINOL and B(OPh)3 were very poor catalysts compared to the same mixtures with VANOL or VAPOL. Borate esters of BINOL have been investigated as chiral catalysts, and these include meso-borates, spiro-borates, and diborabicyclo-borate esters. Borate esters are often in equilibrium, and their structures can be determined by stoichiometry and/or thermodn., especially in the presence of a base. The present study examines the structures of borate esters of BINOL that are produced with different stoichiometric combinations of BINOL with B(OPh)3 in the presence and absence of a base. Depending on conditions, pyro-borates, spiro-borates, and boroxinate species can be generated and their effectiveness in a catalytic asym. aziridination was evaluated. The finding is that BINOL borate species are not necessarily inferior catalysts to those of VANOL and VAPOL but that, under the conditions, BINOL forms two different catalytic species (a boroxinate and a spiro-borate) that give opposite asym. inductions. However, many BINOL derivatives with substituents in the 3- and 3′-positions gave only the boroxinate species and the 3,3′-Ph2BINOL ligand gave a boroxinate catalyst that gives excellent inductions in the aziridination reaction. BINOL derivatives with larger groups in the 3,3′-position will not form either spiro-borates or boroxinate species and thus are not effective catalysts at all.

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Reference:
Bromide – Wikipedia,
bromide – Wiktionary

Application of 1219741-50-0. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 6-Bromo-3-methyl-1H-indole, is researched, Molecular C9H8BrN, CAS is 1219741-50-0, about Chiral Diphosphine-Palladium-Catalyzed Sequential Asymmetric Double-Friedel-Crafts Alkylation and N-Hemiketalization for Spiro-polycyclic Indole Derivatives. Author is Li, Nai-Kai; Zhang, Jun-Qi; Sun, Bing-Bing; Li, Hai-Yan; Wang, Xing-Wang.

An efficient cascade asym. Friedel-Crafts alkylation/N-hemiketalization/Friedel-Crafts alkylation reaction of 3-alkylindoles with oxindolyl β,γ-unsaturated α-ketoesters has been developed in the presence of a chiral diphosphine-palladium(II) catalyst. A series of enantiomerically enriched spiro-polycyclic indole derivatives, e.g. I, have been constructed in high yields with excellent enantioselectivities and diastereoselectivities.

There is still a lot of research devoted to this compound(SMILES：CC1=CNC2=C1C=CC(Br)=C2)Application of 1219741-50-0, and with the development of science, more effects of this compound(1219741-50-0) can be discovered.

Reference:
Bromide – Wikipedia,
bromide – Wiktionary

Synthetic Route of C20H12Br2O2. 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: (S)-3,3′-Dibromo-1,1′-bi-2-naphthol, is researched, Molecular C20H12Br2O2, CAS is 119707-74-3, about Synthesis of new C3 symmetric amino acid- and aminoalcohol-containing chiral stationary phases and application to HPLC enantioseparations. Author is Yu, Jeongjae; Armstrong, Daniel W.; Ryoo, Jae Jeong.

We recently reported a new C3-sym. (R)-phenylglycinol N-1,3,5-benzenetricarboxylic acid-derived chiral high-performance liquid chromatog. (HPLC) stationary phase (CSP 1) that demonstrated better results as compared to a previously described N-3,5-dintrobenzoyl (DNB) (R)-phenylglycinol-derived CSP. Over a decade ago, (S)-leucinol, (R)-phenylglycine, and (S)-leucine derivatives were used as the starting materials of 3,5-DNB-based Pirkle-type CSPs for chiral separation In this study, three new C3-sym. CSPs (CSP 2, 3, and 4) were prepared by combining the ideas and results mentioned above. Here we describe the synthetic procedures and applications of the new C3-sym. CSPs (CSP 2-CSP 4).

There is still a lot of research devoted to this compound(SMILES：OC1=C(Br)C=C2C=CC=CC2=C1C3=C4C=CC=CC4=CC(Br)=C3O)Synthetic Route of C20H12Br2O2, and with the development of science, more effects of this compound(119707-74-3) can be discovered.

Reference:
Bromide – Wikipedia,
bromide – Wiktionary

Category: bromides-buliding-blocks. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: (S)-3,3′-Dibromo-1,1′-bi-2-naphthol, is researched, Molecular C20H12Br2O2, CAS is 119707-74-3, about Design of N-Spiro C2-Symmetric Chiral Quaternary Ammonium Bromides as Novel Chiral Phase-Transfer Catalysts: Synthesis and Application to Practical Asymmetric Synthesis of α-Amino Acids. Author is Ooi, Takashi; Kameda, Minoru; Maruoka, Keiji.

Chiral phase-transfer catalysts, C2-sym. chiral quaternary ammonium bromides I (Ar = Ph, α-naphthyl) and II [Ar = H, Ph, β-naphthyl, 3,5-(diphenyl)phenyl, 4-fluorophenyl, 3,4,5-trifluorophenyl], were readily prepared from com. available optically pure 1,1′-bi-2-naphthol. Detailed procedures for the synthesis of I and II were given, and the structures of II (Ar = H, 3,4,5-trifluorophenyl) were unequivocally determined by single-crystal x-ray diffraction anal. The reactivity and selectivity of these chiral ammonium bromides as chiral phase-transfer catalysts were evaluated in the asym. alkylation of Ph2C:NCH2CO2R (R = Bu-t, Me, CH2Ph, CHPh2) by PhCH2Br under mild liquid-liquid phase-transfer conditions, and the optimization of the reaction variables (solvent, base, and temperature) was conducted. In addition, the scope and limitations of this asym. alkylation were thoroughly investigated with a variety of alkyl halides, in which the advantage of the unique N-spiro structure of II and dramatic effect of the steric as well as the electronic properties of the aromatic substituents on the 3,3′-position of the binaphthyl moiety were emphasized. Finally, the asym. synthesis of Me and tert-Bu (S)-N-acetylindoline-2-carboxylates, and L-Dopa (L-3,4-dihydroxyphenylalanine) tert-Bu ester was successfully accomplished using the above methodol.

There is still a lot of research devoted to this compound(SMILES：OC1=C(Br)C=C2C=CC=CC2=C1C3=C4C=CC=CC4=CC(Br)=C3O)Category: bromides-buliding-blocks, and with the development of science, more effects of this compound(119707-74-3) can be discovered.

Reference:
Bromide – Wikipedia,
bromide – Wiktionary

Formula: C10H8N2S2. 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: 4,4-Dipyridyl Disulfide, is researched, Molecular C10H8N2S2, CAS is 2645-22-9, about Mitochondria-Accumulating Rhenium(I) Tricarbonyl Complexes Induce Cell Death via Irreversible Oxidative Stress and Glutathione Metabolism Disturbance. Author is Wang, Fang-Xin; Liang, Jin-Hao; Zhang, Hang; Wang, Ze-Hua; Wan, Qin; Tan, Cai-Ping; Ji, Liang-Nian; Mao, Zong-Wan.

Mitochondria play a critical role in tumorigenesis. Targeting mitochondria and disturbing related events have been emerging as a promising way for chemotherapy. In this work, two binuclear rhenium(I) tricarbonyl complexes of the general formula [Re2(CO)6(dip)2L](PF6)2 (dip = 4,7-diphenyl-1,10-phenanthroline; L = 4,4′-azopyridine (ReN) or 4,4′-dithiodipyridine (ReS)) were synthesized and characterized. ReN and ReS can react with glutathione (GSH). They exhibit good in vitro anticancer activity against cancer cell lines screened. Besides, they can target mitochondria, cause oxidative stress, and disturb GSH metabolism Both ReN and ReS can induce necroptosis and caspase-dependent apoptosis simultaneously. We also demonstrate that ReN and ReS can inhibit tumor growth in nude mice bearing carcinoma xenografts. Our study shows the potential of Re(I) complexes as chemotherapeutic agents to kill cancer cells via a mitochondria-to-cellular redox strategy.

There is still a lot of research devoted to this compound(SMILES：C1(SSC2=CC=NC=C2)=CC=NC=C1)Formula: C10H8N2S2, and with the development of science, more effects of this compound(2645-22-9) can be discovered.

Reference:
Bromide – Wikipedia,
bromide – Wiktionary

Karageorgis, George; Reckzeh, Elena S.; Ceballos, Javier; Schwalfenberg, Melanie; Sievers, Sonja; Ostermann, Claude; Pahl, Axel; Ziegler, Slava; Waldmann, Herbert published an article about the compound: (S)-3,3′-Dibromo-1,1′-bi-2-naphthol( cas:119707-74-3,SMILESS:OC1=C(Br)C=C2C=CC=CC2=C1C3=C4C=CC=CC4=CC(Br)=C3O ).Reference of (S)-3,3′-Dibromo-1,1′-bi-2-naphthol. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:119707-74-3) through the article.

The principles guiding the design and synthesis of bioactive compounds based on natural product (NP) structure, such as biol.-oriented synthesis (BIOS), are limited by their partial coverage of the NP-like chem. space of existing NPs and retainment of bioactivity in the corresponding compound collections. Here the authors propose and validate a concept to overcome these limitations by de novo combination of NP-derived fragments to structurally unprecedented ‘pseudo natural products’. Pseudo NPs inherit characteristic elements of NP structure yet enable the efficient exploration of areas of chem. space not covered by NP-derived chemotypes, and may possess novel bioactivities. The authors provide a proof of principle by designing, synthesizing and studying the biol. properties of chromopynone pseudo NPs that combine biosynthetically unrelated chromane- and tetrahydropyrimidinone NP fragments. Chromopynones define a glucose uptake inhibitor chemotype that selectively targets glucose transporters GLUT-1 and -3, inhibits cancer cell growth and promises to inspire new drug discovery programs aimed at tumor metabolism

There is still a lot of research devoted to this compound(SMILES：OC1=C(Br)C=C2C=CC=CC2=C1C3=C4C=CC=CC4=CC(Br)=C3O)Reference of (S)-3,3′-Dibromo-1,1′-bi-2-naphthol, and with the development of science, more effects of this compound(119707-74-3) can be discovered.

Reference:
Bromide – Wikipedia,
bromide – Wiktionary