Month: April 2022

Computed Properties of C8H5ClN2O2. 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: 4-Chloroquinazoline-6,7-diol, is researched, Molecular C8H5ClN2O2, CAS is 1145671-36-8, about Development of a Potent Brain-Penetrant EGFR Tyrosine Kinase Inhibitor against Malignant Brain Tumors. Author is Tsang, Jonathan E.; Urner, Lorenz M.; Kim, Gyudong; Chow, Kingsley; Baufeld, Lynn; Faull, Kym; Cloughesy, Timothy F.; Clark, Peter M.; Jung, Michael E.; Nathanson, David A..

The epidermal growth factor receptor (EGFR) is genetically altered in nearly 60% of glioblastoma tumors; however, tyrosine kinase inhibitors (TKIs) against EGFR have failed to show efficacy for patients with these lethal brain tumors. This failure is attributed to the inability of clin. tested EGFR TKIs to cross the blood-brain barrier (BBB) and achieve adequate pharmacol. levels to inhibit various oncogenic forms of EGFR that drive glioblastoma. Through SAR anal., we developed compound 5 (JCN037)(I) from an anilinoquinazoline scaffold by ring fusion of the 6,7-dialkoxy groups to reduce the number of rotatable bonds and polar surface area and by introduction of an ortho-fluorine and meta-bromine on the aniline ring for improved potency and BBB penetration. Relative to the conventional EGFR TKIs erlotinib and lapatinib, JCN037 displayed potent activity against EGFR amplified/mutant patient-derived cell cultures, significant BBB penetration (2:1 brain-to-plasma ratio), and superior efficacy in an EGFR-driven orthotopic glioblastoma xenograft model.

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Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Recommanded Product: 2-((1R,5S)-6,6-Dimethylbicyclo[3.1.1]hept-2-en-2-yl)ethanol. 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: 2-((1R,5S)-6,6-Dimethylbicyclo[3.1.1]hept-2-en-2-yl)ethanol, is researched, Molecular C11H18O, CAS is 35836-73-8, about Synthesis of cardamom peroxide analogues by radical cyclization of hydroperoxyalkenes.

Three pinenic hydroperoxides, e. g. I, were synthesized according to the Dussault method. Two of them could cyclize under radical conditions to give the exo-trig isomer as a single regioisomer. Only five- and six-member ring peroxides were obtained, whereas none of the possible seven-member ones was observed This strategy could be employed in the total synthesis of cardamom peroxide.

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Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Application In Synthesis of 2-((1R,5S)-6,6-Dimethylbicyclo[3.1.1]hept-2-en-2-yl)ethanol. 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: 2-((1R,5S)-6,6-Dimethylbicyclo[3.1.1]hept-2-en-2-yl)ethanol, is researched, Molecular C11H18O, CAS is 35836-73-8, about Cyclopropanation of terminal alkenes via sequential atom transfer radical addition – 1,3-elimination. Author is Tappin, Nicholas D. C.; Michalska, Weronika; Rohrbach, Simon; Renaud, Philippe.

An operationally simple protocol to affect an atom transfer radical addition (ATRA) of com. available ICH2Bpin to terminal alkenes has been developed. The intermediate iodide can be transformed in a one-pot process into the corresponding cyclopropane upon treatment with tetrabutylammonium fluoride (TBAF). This method is highly selective for the cyclopropanation of unactivated terminal alkenes over non-terminal alkenes and electron deficient alkenes. Due to the mildness of the procedure, a wide range of functional groups such as esters, amides, alcs., ketones, and vinylic cyclopropanes are well tolerated. The whole reaction sequence relies on simple reagents such dilauroyl peroxide (DLP) and TBAF and can be run on multi-gram scales in Et acetate as a solvent.

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Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

COA of Formula: C8H11NO2. 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: 1-(tert-Butyl)-1H-pyrrole-2,5-dione, is researched, Molecular C8H11NO2, CAS is 4144-22-3, about Thermal degradation of vinylidene chloride/vinyl chloride copolymers in the presence of N-substituted maleimides. Author is Howell, Bob A.; Zhang, Jin.

As a consequence of their excellent barrier properties vinyl chloride/vinylidene chloride copolymers have long been prominent in the flexible packaging market. While these polymers possess a number of superior characteristics, they tend to undergo thermally induced degradative dehydrochlorination at process temperatures This degradation must be controlled to permit processing of the polymers. Three series of N-substituted maleimides (N-alkyl-, N-aralkyl, and N-aryl) were synthesized, characterized spectroscopically, and evaluated as potential stabilizers for a standard vinyl chloride/vinylidene chloride (85 mass %) copolymer. As surface blends with the polymer, these compounds are ineffective as stabilizers. However, significant stabilization may be achieved by pretreatment of the polymer with N-substituted maleimides. The most effective stabilization of the polymer is afforded by N-aralkyl- or N-arylmaleimides, most notably, N-benzylmaleimide and N-p-methoxyphenylmaleimide.

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Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called The reaction of dichloro- and diiodo(1,5-cyclooctadiene)platinum(II) with diazomethane. A route to bis(halomethyl)platinum(II) complexes, published in 1985-12-03, which mentions a compound: 12266-72-7, mainly applied to platinum halomethyl complex; diazomethane reaction haloplatinum complex; carbene insertion platinum halide bond, HPLC of Formula: 12266-72-7.

Reaction of dichloro- and diiodo(1,5-cyclooctadiene)platinum(II) with excess diazomethane affords the corresponding air-stable bis(halomethyl) complexes Pt(CH2X)2(COD) (X = Cl, I) in excellent yield. Displacement of COD from Pt(CH2Cl)2(COD) with 1,3-bis(diphenylphosphino)propane or two molar equivalents of PPh3 gives the analogous phosphine complexes.

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Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

SDS of cas: 12266-72-7. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Diiodo(1,5-cyclooctadiene)platinum(II), is researched, Molecular C8H12I2Pt, CAS is 12266-72-7, about Reactions of (π-1,5-cyclooctadiene)organoplatinum(II) compounds and the synthesis of perfluoroalkylplatinum complexes. Author is Clark, H. C.; Manzer, L. E..

An improved synthesis for PtR2(COD) (COD = 1,5-cyclooctadiene; R = I, Me, Et, PhCH2, Me3SiCH2, Ph) and the reactions with HCl to give PtRCl(COD) are described. The coupling constant J(Pt-H) to the olefinic carbons varies with the trans-influence of the trans-ligand. Displacement of COD from PtMe2(COD) by L (L = isocyanide, phosphine, amine, bipyridyl (bipy), Me3As) gave cis-PtMe2L2. The oxidative addition of MeI to PtR2(COD)(R = Me, Et) gave the Pt(IV) compounds [PtMe3I]4 and [PtMeEt2I]4. MeEt2PtI reacted with 4-methylpyridine (γ-Pic) to give PtEt2Me(γ-Pic)2I and with AgClO4 and pyridine to give [Pt(Et)2Mepy3](ClO4). The reaction of R2Pt(COD) (R = Me, Et) with iodine or bromine gave [PtR2X2]x. In PtMe2(CNEt)2Br2 coupling of the 14N nucleus with the Et H is observed The reaction of AcCl with PtMe2(COD) gave [PtMe2(COMe)Cl]4. γ-Picoline with the acyl compound gave 2 isomers of PtMe2(COMe)(γ-Pic)2Cl as predicted by cleavage of a cubane-type structure. The reaction of iodine with PtR2(COD)(R = CH2Ph) gave a mixture of [PtR2I2]x and PtRI(COD), whereas for R = Me3SiCH2 only PtRI(COD) was obtained. F3CI reacted with PtMe2(COD) to give Pt(CF3)2(COD) and displacement reactions of COD with ligands L, [L = CNC2H5, PhPMe2, Me3As, bipy, γ-Pic, Ph3Sb, Ph3As, Ph2PCCPPh2, Me2NCH2CH2NMe2) gave cis-Pt(CF3)2L2. Oxidative addition reactions with iodine and the stereochem. of the resultant PtIV compounds are described.

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Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Related Products of 35836-73-8. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 2-((1R,5S)-6,6-Dimethylbicyclo[3.1.1]hept-2-en-2-yl)ethanol, is researched, Molecular C11H18O, CAS is 35836-73-8, about Conjugates of Bispidine and Monoterpenoids as Ligands of Metal Complex Catalysts for the Henry Reaction. Author is Mozhaitsev, E. S.; Ponomarev, K. Y.; Patrusheva, O. S.; Medvedko, A. V.; Dalinger, A. I.; Rogachev, A. D.; Komarova, N. I.; Korchagina, D. V.; Suslov, E. V.; Volcho, K. P.; Salakhutdinov, N. F.; Vatsadze, S. Z..

A number of chiral chelating conjugates combining a bispidine central backbone and one or two pinene side fragments were synthesized. It was shown for the first time that the synthesized compounds are capable to act as catalysts in the Henry reaction both individually and in the presence of metal salts. It was found that the best catalytic results were shown for bis-tertiary amine combining bispidinone and two (-)-myrtenol fragments, and copper as well as zinc acetates.

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Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Product Details of 4144-22-3. 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: 1-(tert-Butyl)-1H-pyrrole-2,5-dione, is researched, Molecular C8H11NO2, CAS is 4144-22-3, about Rhodium(III)-Catalyzed Oxidative [3 + 2] Annulation of 2-Acetyl-1-arylhydrazines with Maleimides: Synthesis of Pyrrolo[3,4-b]indole-1,3-diones. Author is Li, He; Zhang, Sheng; Feng, Xiujuan; Yu, Xiaoqiang; Yamamoto, Yoshinori; Bao, Ming.

A rhodium-catalyzed oxidative [3 + 2] annulation of 2-acetyl-1-phenylhydrazines with maleimides was accomplished using AgNTf2 and Ag2CO3 as additive and oxidant, resp. A variety of 2-acetyl-1-phenylhydrazines with maleimides were converted into pyrrolo[3,4-b]indole-1,3-diones I (R1 = 7-Me, 7-OMe, 7-Ph, etc.; R2 = Me, cyclohexyl, 1-naphthyl, etc.) in satisfactory to excellent yields. Synthetically useful functional groups, such as halogen atoms (F, Cl, Br, and I), ester, cyano, and nitro, remained intact during tandem C-H activation and annulation reactions.

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Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Category: chlorides-buliding-blocks. 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: 3,3′-Diindolylmethane, is researched, Molecular C17H14N2, CAS is 1968-05-4, about Pharmacophore-inspired discovery of FLT3 inhibitor from kimchi.

Globally consumed kimchi is manufactured through fermenting cruciferous vegetables containing indole glucosinolates (IG). But few reports describe the IG metabolism during the fermentation Here, we show that indole-3-carbinol (I3C), a breakdown product of IG, is transformed during the kimchi fermentation into 3,3-diindolylmethane (DIM) and 2-(indol-3-ylmethyl)-3,3-diindolylmethane (LTr1). LTr1 was found to kill the acute myeloid leukemia (AML) cells with FMS-like tyrosine kinase 3 (FLT3) receptor mutations, by inhibiting the FLT3 phosphorylation and the expression of downstream proteins (STAT5, ERK, and AKT). In the immune-depleted mice xenografted with human MV4-11 cells, LTr1 was demonstrated to reduce the tumor growth and synergize with sorafenib, an anti-AML agent in clinic. The work updates the chem. and biol. knowledge about kimchi, and in particular establishes LTr1 as an FLT3 inhibitor that is effective and synergistic with sorafenib in treating AML.

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Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Product Details of 1968-05-4. 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: 3,3′-Diindolylmethane, is researched, Molecular C17H14N2, CAS is 1968-05-4, about Anti-inflammatory activity of diindolylmethane alleviates Riemerella anatipestifer infection in ducks. Author is Fernandez-Colorado, Cherry P.; Cammayo, Paula Leona T.; Flores, Rochelle A.; Nguyen, Binh T.; Kim, Woo H.; Kim, Suk; Lillehoj, Hyun S.; Min, Wongi.

3,3′-Diindolylmethane (DIM) is found in cruciferous vegetables and is used to treat various inflammatory diseases because of its potential anti-inflammatory effects. To investigate effects of DIM in Riemerella anatipestifer-infected ducks which induce upregulation of inflammatory cytokines, ducks were treated orally with DIM at dose of 200 mg/kg/day and infected the following day with R. anatipestifer. Infected and DIM-treated ducks exhibited 14% increased survival rate and significantly decreased bacterial burden compared to infected untreated ducks. Next, the effect on the expression level of inflammatory cytokines (interleukin [IL]-17A, IL-17F, IL-6, IL-1β) of both in vitro and in vivo DIM-treated groups was monitored by quant. reverse-transcription PCR (qRT-PCR). Generally, the expression levels of the cytokines were significantly reduced in DIM-treated splenic lymphocytes stimulated with killed R. anatipestifer compared to stimulated untreated splenic lymphocytes. Similarly, the expression levels of the cytokines were significantly reduced in the spleens and livers of DIM-treated R. anatipestifer-infected ducks compared to infected untreated ducks. This study demonstrated the ameliorative effects of DIM in ducks infected with R. anatipestifer. Thus, DIM can potentially be used to prevent and/or treat R. anatipestifer infection via inhibition of inflammatory cytokine expression.

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Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics