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Li, Honghe’s team published research in Angewandte Chemie, International Edition in 2019 | 20870-77-3

Angewandte Chemie, International Edition published new progress about Atropisomers. 20870-77-3 belongs to class indole-building-block, and the molecular formula is C8H6ClNO, Product Details of C8H6ClNO.

Li, Honghe; Yan, Xiaoqiang; Zhang, Jitan; Guo, Weicong; Jiang, Jijun; Wang, Jun published the artcile< Enantioselective Synthesis of C-N Axially Chiral N-Aryloxindoles by Asymmetric Rhodium-Catalyzed Dual C-H Activation>, Product Details of C8H6ClNO, the main research area is arylnaphthyl oxindole atropisomer enantioselective preparation; rhodium catalyst enantioselective activation cycloaddition aryl alkyne aryloxindole; C−H activation; alkynes; axial chirality; heterocycles; rhodium.

In the presence of a diindolocyclononane-fused cyclopentadiene rhodium complex and AgNTf2, N-aryloxindoles such as I underwent enantioselective Satoh-Miura-type cycloaddition reactions with diaryl alkynes such as diphenylacetylene to yield atropisomeric tetraarylnaphthyl oxindoles such as II in up to 99% yield and in 8-99% ee (all but one product in >60% ee).

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Hajiali, Mahtab’s team published research in Journal of Industrial and Engineering Chemistry (Amsterdam, Netherlands) in 2020-12-25 | 950846-89-6

Journal of Industrial and Engineering Chemistry (Amsterdam, Netherlands) published new progress about Emulsion polymerization. 950846-89-6 belongs to class indole-building-block, and the molecular formula is C30H36N4O2, Application In Synthesis of 950846-89-6.

Hajiali, Mahtab; Keyvan Rad, Jaber; Ghezelsefloo, Sara; Mahdavian, Ali Reza published the artcile< Solvent-free and anticounterfeiting fluorescent inks based on epoxy-functionalized polyacrylic nanoparticles modified with Rhodamine B for cellulosic substrates>, Application In Synthesis of 950846-89-6, the main research area is epoxy functionalized polyacrylic nanoparticle anticounterfeiting fluorescent ink cellulosic substrate; rheol photophys property.

Nowadays, anticounterfeiting technol. and information security by solvent-free photoluminescent polymeric latex nanoparticles are of considerable interest in variety of hi-tech systems. Herein and for the first time, Rhodamine B ethylenediamine acrylate (N-RhBAc) was synthesized and copolymerized with Me methacrylate and glycidyl methacrylate to obtain epoxy-functionalized fluorescent latex nanoparticles (RhAcL-series) through emulsion polymerization Inclusion of N-RhBAc into the spherical polyacrylic nanoparticles with average particle size of 40-70 nm enhanced its absorption intensity (λmax of 571 nm) and emission intensity (λem of 588 nm) up to 8 and 3.5-fold with respect to N-RhBAc in the solution state (λmax of 524 nm and λem of 582 nm), resp. The nanometric size of particles and decorated epoxy functional groups on their outer layer provided well-wetting and fine-diffusion into the cellulosic nanofiber. To obtain anticounterfeiting inks with high-resolution marking on cellulosic paper without spreading and tracing, fluorescent RhAcL-1 was formulated with required thickening agent and defoamer. The painted pattern by the above ink could immediately be developed and illuminated with brilliant red-pink fluorescence emission upon UV irradiation

Tang, Tengxuan’s team published research in Research on Chemical Intermediates in 2020-02-29 | 950846-89-6

Research on Chemical Intermediates published new progress about Colorimetric sensors. 950846-89-6 belongs to class indole-building-block, and the molecular formula is C30H36N4O2, COA of Formula: C30H36N4O2.

Tang, Tengxuan; Wang, Jing; Xu, Dongmei published the artcile< Synthesis of a novel hyperbranched polymer and its application in multi-channel sensing Fe3+>, COA of Formula: C30H36N4O2, the main research area is hyperbranched polymer fluorescent sensor iron.

A novel hyperbranched polymer was designed and synthesized as a spectral probe for Fe3+. The polymer showed high selectivity and sensitivity to Fe3+ in CH3CN/H2O (75/25, volume/volume). Fe3+ caused a new peak at 560 nm in UV-Vis absorption, a 31 nm fluorescence red shift, a 35-fold enhancement in fluorescence intensity at 575 nm and an 8.3-fold enhancement in fluorescence quantum yield, accompanied by a visual color change from colorless to pink and a fluorescence from dark to bright orange. The colorimetric and fluorescent detection limits were 1.29 and 1.88 μM, resp. The detection was almost not interfered by other common metal cations. The polymer could be applied in assaying Fe3+ in real sample with similar precision to that of at. absorption spectroscopy.

Li, Ruo-Pu’s team published research in ChemistrySelect in 2022-07-27 | 20870-77-3

ChemistrySelect published new progress about C-C bond formation. 20870-77-3 belongs to class indole-building-block, and the molecular formula is C8H6ClNO, Application of C8H6ClNO.

Li, Ruo-Pu; Wang, Zheng-Lin; Zhang, Yun-Hao; Tan, Zhi-Yu; Xu, Da-Zhen published the artcile< Iodine-Catalyzed Oxidative Coupling of Indolin-2-ones with Indoles: Synthesis of 3,3-Disubstituted Oxindole Compounds>, Application of C8H6ClNO, the main research area is disubstituted oxindole preparation; indolinone indole oxidative coupling iodine catalyst.

Here, an iodine-catalyzed oxidative coupling of indolinones with indoles for the construction of compounds with all-carbon quaternary centers such as 1H,1”H-[3,3′:3′,3”-terindol]-2′(1’H)-ones I [R1 = H, Me, Bn, etc.; R2 = H, 5-Br, 5-F, etc.; R3 = H, Me, R4 = H, 2-Me, 5-OMe, etc.] was described. The method performed under metal-free and peroxide-free conditions, providing 3,3-disubstituted oxindoles via two C-C bond formations from secondary C(sp3)-Hs in a straightforward manner.

ChemistrySelect published new progress about C-C bond formation. 20870-77-3 belongs to class indole-building-block, and the molecular formula is C8H6ClNO, Application of C8H6ClNO.

Ghosh, Ayndrila’s team published research in Tetrahedron Letters in 2020-02-27 | 950846-89-6

Tetrahedron Letters published new progress about Fluorescence imaging. 950846-89-6 belongs to class indole-building-block, and the molecular formula is C30H36N4O2, Product Details of C30H36N4O2.

Ghosh, Ayndrila; Mandal, Saurodeep; Das, Sujoy; Shaw, Pallab; Chattopadhyay, Ansuman; Sahoo, Prithidipa published the artcile< Insights into the phenomenon of acquisition and accumulation of Fe3+ in Hygrophila spinosa through fluorimetry and fluorescence images>, Product Details of C30H36N4O2, the main research area is Hygrophila ferric uptake fluorescent probe imaging.

Rhodamine functionalized fluorescent probe IP has been synthesized to investigate the phenomenon of Fe3+ acquisition and accumulation in Hygrophila spinosa. H. spinosa is a tropical medicinal plant which is iron rich and consumed for the treatment of the patients suffering from anemia. IP is capable of selectively binding Fe3+ by enhancing fluorescent intensity via “”turn on”” mechanism due to complex formation. Spectroscopic studies and microscopic tools helped in better understanding about the acquisition as well as the quant. accumulation of Fe3+ in different parts of the plant.

Tetrahedron Letters published new progress about Fluorescence imaging. 950846-89-6 belongs to class indole-building-block, and the molecular formula is C30H36N4O2, Product Details of C30H36N4O2.

Wu, Ke-Xin’s team published research in Green Chemistry in 2021 | 20870-77-3

Green Chemistry published new progress about Arylation (chemoselective). 20870-77-3 belongs to class indole-building-block, and the molecular formula is C8H6ClNO, Computed Properties of 20870-77-3.

Wu, Ke-Xin; Xu, Yi-Ze; Cheng, Liang; Wu, Run-Shi; Liu, Peng-Ze; Xu, Da-Zhen published the artcile< Iron-catalyzed oxidative bis-arylation of indolin-2-ones for direct construction of quaternary carbons>, Computed Properties of 20870-77-3, the main research area is oxindole bis indolyl preparation chemoselective green chem; indolinone indole oxidative bis arylation iron catalyst.

A direct construction of all-carbon quaternary centers from secondary C(sp3)-H substrates through a dehydrogenative cross-coupling reaction was described. Using FeCl2·4H2O as the catalyst and employing air (mol. oxygen) as the terminal oxidant, the cross-coupling of indolin-2-ones I (R1 = H, Me, Ph, Bn; R2 = H, 6-Cl, 5-F, etc.) with indoles such as 5-fluoroindole, N-methylindole, 3-methylindole, etc. proceeded smoothly under mild, ligand-free and base-free conditions, providing 3,3-disubstituted oxindoles bearing all-carbon quaternary centers II (R3 = 5-fluoroindol-3-yl, N-methylindol-3-yl, 3-methylindol-2-yl, etc.) with excellent chemoselectivities.

Green Chemistry published new progress about Arylation (chemoselective). 20870-77-3 belongs to class indole-building-block, and the molecular formula is C8H6ClNO, Computed Properties of 20870-77-3.

Shin, Subin’s team published research in Chemical Engineering Journal (Amsterdam, Netherlands) in 2019 | CAS: 120-72-9

1H-Indole(cas: 120-72-9) belongs to indole. Indole, also called Benzopyrrole, a heterocyclic organic compound occurring in some flower oils, such as jasmine and orange blossom, in coal tar, and in fecal matter. It is used in perfumery and in making tryptophan, an essential amino acid, and indoleacetic acid (heteroauxin), a hormone that promotes the development of roots in plant cuttings.Safety of 1H-Indole

The author of 《Metal-organic framework with various functional groups: Remarkable adsorbent for removal of both neutral indole and basic quinoline from liquid fuel》 were Shin, Subin; Sarker, Mithun; Lee, Hong-In; Jhung, Sung Hwa. And the article was published in Chemical Engineering Journal (Amsterdam, Netherlands) in 2019. Safety of 1H-Indole The author mentioned the following in the article:

Removal of nitrogen-containing compounds from fuel is very important for effective utilization of fuel. In this study, a stable metal-organic framework (MOF, here, MIL-125) and its amino form (MIL-125-NH2) were prepared, and the latter one was further modified to get MIL-125 with various functional groups or MIL-125-NH-C(O)-C(O)-OH. The obtained MIL-125s were applied in the adsorption of both neutral indole (IND) and basic quinoline (QUI) from model fuel in order to estimate the possible applications of the MOFs in adsorptive denitrogenation. MIL-125-NH-C(O)-C(O)-OH, MIL-125-VFG (VFG means various functional groups), showed remarkable performances in the adsorptions. Or, MIL-125-VFG showed the highest adsorption capacity for IND, compared with any adsorbent reported so far. The MOF also showed the second highest uptake of QUI, after the protonated polyaniline(5%)@MIL-101. The remarkable performances of MIL-125-VFG could be interpreted with ample active sites for H-bonding, or the adsorption could be explained via H-bonding (IND: H-donor; QUI: H-acceptor). Moreover, the MOF can be easily recycled by ethanol washing. Therefore, MOFs with ample active sites for H-bonding (or with various functional groups) can be suggested as a promising adsorbent for purification of liquid fuel or adsorptive denitrogenation. The results came from multiple reactions, including the reaction of 1H-Indole(cas: 120-72-9Safety of 1H-Indole)

Vesely, Jan’s team published research in Collection of Czechoslovak Chemical Communications in 2003 | CAS: 99409-32-2

Ethyl 3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-β-D-thioglucopyranoside(cas: 99409-32-2) belongs to indole.The indole subunit is an almost ubiquitous component of biologically active natural products, and its study has been the focus of research for decades.Electric Literature of C22H25NO9SThey are capable of binding to a variety of receptors with high affinity and thus have applications in a wide range of therapeutic areas. Due to this activity, the indole ring system has become an important component or intermediate in the synthesis of heterocycles.

Vesely, Jan; Ledvina, Miroslav; Jindrich, Jindrich; Saman, David; Trnka, Tomas published an article in Collection of Czechoslovak Chemical Communications. The title of the article was 《Improved synthesis of 1,2-trans-acetates and 1,2-trans ethyl 1-thioglycosides derived from 3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-D-hexopyranosides》.Electric Literature of C22H25NO9S The author mentioned the following in the article:

Effective one-pot synthesis of 1,2-trans-acetates derived from N-phthaloyl-protected D-glucosamine, D-galactosamine and D-mannosamine, resp., is presented. Anomerization of the corresponding 1,2-cis-acetates and direct conversion of all of them to 1,2-trans Et 1-thioglycosides are also described and discussed. In the experiment, the researchers used many compounds, for example, Ethyl 3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-β-D-thioglucopyranoside(cas: 99409-32-2Electric Literature of C22H25NO9S)

Vyhlidalova, Barbora’s team published research in International Journal of Molecular Sciences in 2020 | CAS: 120-72-9

《Gut microbial catabolites of tryptophan are ligands and agonists of the aryl hydrocarbon receptor: a detailed characterization》 was written by Vyhlidalova, Barbora; Krasulova, Kristyna; Pecinkova, Petra; Marcalikova, Adela; Vrzal, Radim; Zemankova, Lenka; Vanco, Jan; Travnicek, Zdenek; Vondracek, Jan; Karasova, Martina; Mani, Sridhar; Dvorak, Zdenek. Recommanded Product: 1H-IndoleThis research focused ontryptophan aryl hydrocarbon receptor signaling colorectal hepatocyte adenocarcinoma; aryl hydrocarbon receptor; indoles; microbiome; tryptophan. The article conveys some information:

We examined the effects of gut microbial catabolites of tryptophan on the aryl hydrocarbon receptor (AhR). Using a reporter gene assay, we show that all studied catabolites are low-potency agonists of human AhR. The efficacy of catabolites differed substantially, comprising agonists with no or low (i3-propionate, i3-acetate, i3-lactate, i3-aldehyde), medium (i3-ethanol, i3-acrylate, skatole, tryptamine), and high (indole, i3-acetamide, i3-pyruvate) efficacies. We displayed ligand-selective antagonist activities by i3-pyruvate, i3-aldehyde, indole, skatole, and tryptamine. Ligand binding assay identified low affinity (skatole, i3-pyruvate, and i3-acetamide) and very low affinity (i3-acrylate, i3-ethanol, indole) ligands of the murine AhR. Indole, skatole, tryptamine, i3-pyruvate, i3-acrylate, and i3-acetamide induced CYP1A1 mRNA in intestinal LS180 and HT-29 cells, but not in the AhR-knockout HT-29 variant. We observed a similar CYP1A1 induction pattern in primary human hepatocytes. The most AhR-active catabolites (indole, skatole, tryptamine, i3-pyruvate, i3-acrylate, i3-acetamide) elicited nuclear translocation of the AhR, followed by a formation of AhR-ARNT heterodimer and enhanced binding of the AhR to the CYP1A1 gene promoter. Collectively, we comprehensively characterized the interactions of gut microbial tryptophan catabolites with the AhR, which may expand the current understanding of their potential roles in intestinal health and disease. The results came from multiple reactions, including the reaction of 1H-Indole(cas: 120-72-9Recommanded Product: 1H-Indole)

Zhang, Jitan’s team published research in Chemical Communications (Cambridge, United Kingdom) in 2019 | CAS: 399-52-0

5-Fluoro-1H-indole(cas: 399-52-0) is a member of aromaticfluorinated building blocks. Fluorine-containing aromatics have been incorporated into crop-protection chemicals (herbicides, insecticides, fungicides). Liquid crystals, positron emission tomography, and imaging systems represent new areas where fluoroaromatics and fluoroheterocyclics have gained attention.Electric Literature of C8H6FN

In 2019,Chemical Communications (Cambridge, United Kingdom) included an article by Zhang, Jitan; Wu, Manyi; Fan, Jian; Xu, Qiaoqiao; Xie, Meihua. Electric Literature of C8H6FN. The article was titled 《Selective C-H acylation of indoles with α-oxocarboxylic acids at the C4 position by palladium catalysis》. The information in the text is summarized as follows:

The first Pd-catalyzed direct C-H acylation of indoles at the C4 position with α-oxocarboxylic acids using a ketone directing group was described. This reaction exhibited high regioselectivity with the tolerance of a wide scope of functional groups to afford diverse acylated indoles I [R = Me, Ph, Bn, Ts; R1 = H, Me, Ph; R2 = H, Me, Et, t-Bu, Ph; R3 = Ph, 4-MeC6H4, 2-thienyl, etc.; R4 = H, 5-F, 6-Br, etc.] in moderate to good yields. The control experiments evidenced the generation of acyl radicals via K2S2O8 promoted decarboxylation of α-oxocarboxylic acids and the involvement of a PdII/PdIV catalytic cycle. Importantly, the synthetically useful selectivity observed might be applied to prepare indole derivatives with anti-tumor activity as tubulin inhibitors. In the experimental materials used by the author, we found 5-Fluoro-1H-indole(cas: 399-52-0Electric Literature of C8H6FN)