Tag: M.W:400-500

SDS of cas: 15227-42-6. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: cis-Dichlorobis(pyridine)platinum(II), is researched, Molecular C10H10Cl2N2Pt, CAS is 15227-42-6, about Reactivity of neutral platinum(II) complexes. Author is Panasyuk, V. D.; Malashok, N. F..

Kinetic data were obtained for the hydrolysis of [PtenCl2], cis- and trans-[Pt(NH3)2Cl2], cis-[Ptpy2Cl2], and [Pten(NO2)Cl] and for the replacement of Cl by NH3 in trans-[Pt(NH3)2Cl2]. The medium was H2O and mixtures of H2O with MeOH, EtOH, or Me2CO, the concentration of the organic component being 30 and 40 weight % in the hydrolysis and replacement reactions, resp. The lowering of the reaction rate in the presence of the organic component is explained by a structure-dependent contribution of the component to the solvation energy of an intermediate complex. The hydrolysis reaction is assumed to proceed in 2 steps: (1) formation of an intermediate complex by a slow coordination of the H2O mol. to the Pt2+ central ion without release of Cl- and (2) by a quick release of Cl-. The bond polarization occurs during the 1st step and the rate constant, k, should equal the ratio of the activity coefficients of the initial and activated complexes.

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Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

HPLC of Formula: 15227-42-6. 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: cis-Dichlorobis(pyridine)platinum(II), is researched, Molecular C10H10Cl2N2Pt, CAS is 15227-42-6, about Synthesis of potential platinum(II) antitumor complexes: complexes containing bidentate pyridyl and imidazolyl donors.

PtLCl2 [L = di-2-pyridylmethane, 3,3-bis(2-pyridyl)pentane, 2-(2-pyridyl)imidazole (I), N-methyl-2-(2-pyridyl)imidazole] were prepared and characterized by chem. anal., elec. conductivity, IR spectra, and inhibitory effects on cultures of L1210 mouse leukemia cells. The complex with L = I gave a 50% inhibiting dose similar to that of cis-Pt(NH3)2Cl2 and below the values of the other complexes; this suggests that further tests with tumor-bearing animals is warranted for this I complex with Pt.

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Tetrahydroisoquinoline – Wikipedia,
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The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: cis-Dichlorobis(pyridine)platinum(II)( cas:15227-42-6 ) is researched.Name: cis-Dichlorobis(pyridine)platinum(II).Lasitsa, N. A.; Skvortsov, N. K.; Lobadyuk, V. I.; Spevak, V. N.; Esina, G. A.; Abramova, I. P.; Lazarev, S. Ya. published the article 《Platinum(II) complexes in the catalytic hydrosilylation of acetophenone. Kinetics of the reaction and the effect of ligands》 about this compound( cas:15227-42-6 ) in Zhurnal Obshchei Khimii. Keywords: acetophenone hydrosilylation platinum catalyst kinetics; ligand effect platinum catalyst hydrosilylation. Let’s learn more about this compound (cas:15227-42-6).

A kinetic study of hydrosilylation of MeCOPh with MeSiHCl2 or MeSiPhH2 in the presence of LL1PtX2 (X = Cl, Br; L = L1 = Me2SO, Et2SO, py, Et3P, MeSOC6H4Me-4; L = C2H4, L1 = Me2SO, Et2SO; L = py, L1 = Et2SO; L = MeSOC6H4Me-4, L1 = Bu3P) catalysts showed a relationship between the ligand type and catalytic activity. In contrast with bis(phosphine) and bis(olefin) complexes, bis(sulfoxide) complexes and all complexes with mixed ligands, one of which is sulfoxide, show high catalytic activity. For the reaction with MeSiHCl2, the order of reactivity is olefin > SO > P(III) > py, close to an analogous relationship for the hydrosilylation of olefins.

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Tetrahydroisoquinoline – Wikipedia,
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Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 882562-40-5, is researched, Molecular C18H11Cl2N3O2S, about Covalent targeting of remote cysteine residues to develop CDK12 and CDK13 inhibitors, the main research direction is THZ531 CDK12 CDK13 inhibitor transcription cancer.Formula: C18H11Cl2N3O2S.

Cyclin-dependent kinases 12 and 13 (CDK12 and CDK13) play critical roles in the regulation of gene transcription. However, the absence of CDK12 and CDK13 inhibitors has hindered the ability to investigate the consequences of their inhibition in healthy cells and cancer cells. Here we describe the rational design of a first-in-class CDK12 and CDK13 covalent inhibitor, THZ531. Co-crystallization of THZ531 with CDK12-cyclin K indicates that THZ531 irreversibly targets a cysteine located outside the kinase domain. THZ531 causes a loss of gene expression with concurrent loss of elongating and hyperphosphorylated RNA polymerase II. In particular, THZ531 substantially decreases the expression of DNA damage response genes and key super-enhancer-associated transcription factor genes. Coincident with transcriptional perturbation, THZ531 dramatically induced apoptotic cell death. Small mols. capable of specifically targeting CDK12 and CDK13 may thus help identify cancer subtypes that are particularly dependent on their kinase activities.

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Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: cis-Dichlorobis(pyridine)platinum(II)( cas:15227-42-6 ) is researched.Category: tetrahydroisoquinoline.Assaka, Andressa M.; Hu, Bin; Mays, Jimmy; Iamazaki, Eduardo T.; Atvars, Teresa D. Z.; Akcelrud, Leni published the article 《The effect of complexation with platinum in polyfluorene derivatives: A photo- and electro-luminescence study》 about this compound( cas:15227-42-6 ) in Journal of Luminescence. Keywords: polyfluorene derivative platinum complexation photoluminescence electroluminescence. Let’s learn more about this compound (cas:15227-42-6).

The synthesis and characterization of a polymeric structure containing fluorene units statistically linked to 3-cyclohexyl-thiophene and bipyridine PFOTBipy-poly[(4-hexylthiophene-2,5-diyl)(9,9-dihexyl-fluoren-2,7-diyl)-co-(bipyridine-5.5′-diyl)(9,9-dihexyl-fluoren-2,7-diyl)], is reported. The complexation with platinum was possible through the bipyridil units present in 10%, 50% and 100% content. The structure has a fluorenyl moiety between each bipyridine and thiophene groups resulting in a stable and efficient light-emitting polymeric material combining the well known emissive properties of fluorene, the charge mobility generated by thiophene and the electron-transfer properties of a metal complex as well. All the polymers were photo and electroluminescent materials, and showed phosphorescence at low temperatures Photoluminescence properties were studied by steady state and time resolved spectroscopy and showed changes of both emission peak and relative intensity of the emission bands depending on the relative amount of the platinum complex. The electroluminescence followed the trends found for photoluminescence. The blue emission of the copolymer without platinum is due to the fluorenyl segments and for higher complex contents the emission is characteristic of the aggregates involving the bipyridinyl moieties. Therefore, emission color can be tuned by the complex content. The turn-on voltage was strongly reduced from 22 to 8 V for the 100% complexed copolymer, as compared to the device made with the non complexed one, but the luminance decreased, due to quenching or trapping effects.

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Tetrahydroisoquinoline – Wikipedia,
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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Spectra and structure of pyridine coordination compounds》. Authors are Herbelin, F.; Herbelin, J. D.; Mathieu, J. P.; Poulet, H..The article about the compound:cis-Dichlorobis(pyridine)platinum(II)cas:15227-42-6,SMILESS:[Cl-][Pt+2]([N]1=CC=CC=C1)([Cl-])[N]2=CC=CC=C2).SDS of cas: 15227-42-6. Through the article, more information about this compound (cas:15227-42-6) is conveyed.

Ir absorption spectra of 15 coordination compounds of pyridine with Pt, Rh, and Ir have been observed, 100-3200 cm.-1; in some cases uv and Raman spectra have also been observed. The effect of coordination on the vibration spectrum of pyridine, the structure of the coordinated units, and the differences in the spectra of cis-trans isomers are discussed.

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Tetrahydroisoquinoline – Wikipedia,
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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 Chemical assembling of silica surface using a reaction of catalytic hydrosilylation, published in 2009-10-31, which mentions a compound: 15227-42-6, Name is cis-Dichlorobis(pyridine)platinum(II), Molecular C10H10Cl2N2Pt, Quality Control of cis-Dichlorobis(pyridine)platinum(II).

Chem. assembling of the silica surface modified by dimethylchlorosilane was performed by the catalytic hydrosilylation of 1,3-divinyl-1,1,3,3-tetramethyldisiloxane, α-Me styrene, acetophenone, allyl Bu and allyl glycidyl ethers with dimethylchlorosilane. The effect of the nature of complexes of platinum, palladium, rhodium and ruthenium on the parameters of hydrosilylation was studied. It was shown that the maximum rate of hydrosilylation was observed in the reaction with allyl glycidyl ether, and min., with α-methylstyrene; the most effective catalyst of hydrosilylation was [Rh(CO)2(acac)].

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Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

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 Unusual chemical behavior and molecular structure of a platinum(II) complex with N,N-diethylhydroxylamine, published in 1992-09-30, which mentions a compound: 15227-42-6, Name is cis-Dichlorobis(pyridine)platinum(II), Molecular C10H10Cl2N2Pt, Safety of cis-Dichlorobis(pyridine)platinum(II).

cis-[PtL2Cl2] (L = Et2NOH) was prepared by the reaction of K2PtCl4 with L. cis-[PtL2Cl2] does not react with amines (NH3, pyridine, Et2NOH) and L does not react with cis-[PtA2Cl2] (A = NH3, py). cis-[PtL2Cl2] is monoclinic, space group C2, a 7.569(2), b 12.384(7), c 15.428(2) Å, β 100.00(2)°, Z = 4, R = 0.0287. One L coordinates to Pt through the N atom whereas the other is in the zwitterionic form and coordinates through the O atom. The low reactivity of cis-[PtL2Cl2] in substitution reactions is explained on the basis of H bonding and agostic interactions due to which the axial positions in the square planar complexes are blocked against nucleophilic attack.

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Tetrahydroisoquinoline – Wikipedia,
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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 Quantitative measurement of the reduction of platinum(iv) complexes using X-ray absorption near-edge spectroscopy (XANES), published in 2012, which mentions a compound: 15227-42-6, Name is cis-Dichlorobis(pyridine)platinum(II), Molecular C10H10Cl2N2Pt, Recommanded Product: cis-Dichlorobis(pyridine)platinum(II).

The platinum(ii) drugs cisplatin, carboplatin and oxaliplatin are usefully employed against a range of malignancies, but toxicities and resistance have spurred the search for improved analogs. This has included investigation of the platinum(iv) oxidation state, which provides greater kinetic inertness. It is generally accepted that Pt(iv) complexes must be reduced to Pt(ii) for activation. As such, the ability to monitor reduction of Pt(iv) complexes is critical to guiding the design of candidates, and providing mechanistic understanding. Here we report in full that the white line height of X-ray absorption near-edge spectra (XANES) of Pt complexes, normalized to the post-edge min., can be used to quant. determine the proportion of each oxidation state in a mixture A series of Pt(iv) complexes based on the Pt(ii) complexes cisplatin and transplatin were prepared with chlorido, acetato or hydroxido axial ligands, and studies into their reduction potential and cytotoxicity against A2780 human ovarian cancer cells were performed, demonstrating the relationship between reduction potential and cytotoxicity. Anal. of white line height demonstrated a clear and consistent difference between Pt(ii) (1.52 ± 0.05) and Pt(iv) (2.43 ± 0.19) complexes. Reduction of Pt(iv) complexes over time in cell growth media and A2780 cells was observed by XANES, and shown to correspond with their reduction potentials and cytotoxicities. We propose that this method is useful for monitoring reduction of metal-based drug candidates in complex biol. systems.

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Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

Synthetic Route of C10H10Cl2N2Pt. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: cis-Dichlorobis(pyridine)platinum(II), is researched, Molecular C10H10Cl2N2Pt, CAS is 15227-42-6, about Infrared spectroscopic study of dicyanato complexes of platinum. Author is Kharitonov, Yu. Ya.; Evstaf’eva, O. N.; Baranovskii, I. B.; Mazo, G. Ya..

trans-[Pt(NH3)2(CN)2] (I), trans-[Pt(ND3)2(CN)2], trans-Pt(NH3)2(CN)2.AgNO3, trans-[Pt(NH3)2(CN)2X2] (II) where X = Cl, Br, I, or OH, trans-[Pt(ND3)2(CN)2X2] where X = Br or I, cis-[PtA(CN)2] where A = (NH3)2, (pyridine)2, ethylenediamine, or (thiourea)2, cis-[Pten(CN)2X2] where X is Br or OH were studied by ir spectroscopy. Maximum of these compounds are tabulated. On oxidation of Pt, the νpt-CN did not change while νC-N increased ∼40-70 cm.-1 All trans complexes had a singlet and all cis had a doublet νCN. The split for cis complexes was larger for Pt(II) than for Pt(IV). The force constant of the C-N bond changed insignificantly, especially in Pt(II) complexes, on transition from ionic to covalent cyanides. Apparently the σ-bond contribution is larger in Pt(IV) than in Pt(II) complexes. When I was oxidized to II (X = Br) and, this subsequently became reduced, the product obtained was identical with the starting material. The complexes did not rearrange on oxidation and the nature of the X in II did not affect the Pt-N bonds. The νPt-N of trans isomers were at ∼525-31 cm.-1 for Pt(II) or Pt(IV). For the complexes studied, the overall (σ + π) bond strength of Pt-N was approx. the same in Pt(II) and Pt(IV) complexes.

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Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem