Author: tianli

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Bright Luminescent Platinum(II)-Biaryl Emitters Synthesized Without Air-Sensitive Reagents》. Authors are Wakasugi, Chuei; Yoshida, Masaki; Sameera, W. M. C.; Shigeta, Yasuhiro; Kobayashi, Atsushi; Kato, Masako.The article about the compound:Dichloro(1,5-cyclooctadiene)platinum(II)cas:12080-32-9,SMILESS:C1=CCC/C=CCC/1.[Pt+2].[Cl-].[Cl-]).Application of 12080-32-9. Through the article, more information about this compound (cas:12080-32-9) is conveyed.

Transition-metal complexes bearing biaryl-2,2′-diyl ligands tend to show intense luminescence. However, difficulties in synthesis have prevented their further functionalization and practical applications. Herein, a series of platinum(II) complexes bearing biaryl-2,2′-diyl ligands, which have never been prepared in air, were synthesized through transmetalation and successive cyclometalation of biarylboronic acids. This approach does not require any air- or moisture-sensitive reagents and features a simple synthesis even in air. The resulting (Et4N)2[Pt(m,n-F2bph)(CN)2] (m,n-F2bph=m,n-difluorobiphenyl-2,2′-diyl) complexes exhibit intense green emissions with high quantum efficiencies of up to 0.80 at 298 K. The emission spectral fitting and variable-temperature emission lifetime measurements indicate that the high quantum efficiency was achieved because of the tight packing structure and strong σ-donating ability of bph.

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Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Pyridine-3,5-dicarbonitrile, is researched, Molecular C7H3N3, CAS is 1195-58-0, about Vanadium-titanium-tin oxide catalyst for oxidative ammonolysis of alkylbenzenes and alkylpyridines.Synthetic Route of C7H3N3.

Oxidative ammonolysis of alkylbenzenes and alkylpyridines (p-xylene, pseudocumene, 2-, 3-, and 4-picoline, 2,6- and 3,5-lutidine, 3-ethylpyridine, 2-methyl-5-ethylpyridine, and 2-methyl-5-vinylpyridine) on SnO2-modified Ti V oxide catalyst gave the corresponding nitriles in high yields. The catalyst is activated by water vapor.

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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: Pyridine-3,5-dicarbonitrile( cas:1195-58-0 ) is researched.Safety of Pyridine-3,5-dicarbonitrile.Kuthan, J.; Musil, L.; Kohoutova, A. published the article 《Dihydropyridines. XXIV. Partial hydrogenation of some 3,5-dicyanopyridines》 about this compound( cas:1195-58-0 ) in Collection of Czechoslovak Chemical Communications. Keywords: pyridine dihydro dicyano. Let’s learn more about this compound (cas:1195-58-0).

Partial hydrogenation of 3,5-dicyanopyridine in EtOH over Pd on BaSO4 or BaCO3 gave a mixture of 3,5-dicyano-1,2-dihydropyridine and 3,5-dicyano-1,4-dihydropyridine. A similar hydrogenation of 3,5-dicyano-4-methylpyridine gave only the 1,2-dihydro derivative 3,5-Dicyano-2,6-dimethylpyridine and 3,5-dicyano-2,4,6-trimethylpyridine gave only traces of the 1,2- and 1,4-dihydro derivatives The mechanism of hydrogenation is discussed with the use of bicentric localization energies and simple Hueckel MO theory.

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Name: Dichloro(1,5-cyclooctadiene)platinum(II). 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: Dichloro(1,5-cyclooctadiene)platinum(II), is researched, Molecular C8H12Cl2Pt, CAS is 12080-32-9, about Cyclometalated Platinum(II) Complexes with Mesoionic Dibenzofuranyl-1,2,3-triazol-4-ylidene Ligands: Synthesis, Characterization and Photophysical Properties. Author is Soellner, Johannes; Strassner, Thomas.

Platinum(II) complexes with mesoionic C-C*-cyclometalating 1,2,3-triazolylidene ligands are highly efficient phosphorescent emitters. Herein we report a series of this type bearing dibenzofuranyl-substituted carbenes along with different β-diketonate auxiliary ligands. They show luminescence in the green region of the visible spectrum and quantum yields of up to 78% at room temperature The proposed mol. structures were verified by NMR spectroscopy and x-ray diffraction experiments which prove the formation of the mesoionic carbene. Addnl., DFT calculations and cyclic voltammetry measurements were used to rationalize the observed photophys. properties of the reported complexes.

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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Dihydropyridines. VII. Reactions of symmetrically alkylated 3,5-dicyanopyridines with sodium borohydride》. Authors are Kuthan, J.; Janeckova, E..The article about the compound:Pyridine-3,5-dicarbonitrilecas:1195-58-0,SMILESS:N#CC1=CC(C#N)=CN=C1).Electric Literature of C7H3N3. Through the article, more information about this compound (cas:1195-58-0) is conveyed.

cf. ibid. 1495; CA 60, 6817d. NaBH4 reduction of 3,5-dicyanopyridines I-VI gave 3,5-dicyano-1,2- and 1,4-dihydropyridines VII-XVII. I and LiAlH4 gave a mixture of VII and VIII which was separated by chromatography. Two procedures were used in the reduction of I-VI: Method A. EtOH (0.2 ml.) was added to a mixture of 38 mg. NaBH4 and 0.001 mole ground I-VI, and the precipitated product washed with 2.5 ml. cold H2O. Method B. NaBH4 (150 mg.) was added to a mixture of 0.002 mole I-VI and 5 ml. EtOH, the solution diluted with H2O to ∼80 ml. after several hrs., and the precipitated filtered off (starting compound, method, product, % yield, and m.p. given): I, B, VIII, 62, 205-6° (dilute EtOH); I, A, VII, 188-9° (Me2CO-cyclohexane) (VIII was also obtained); II, A, IX, 50, 214-15° (dilute EtOH); III, A, X + XI (92:8), 44, 154-72° (mixture); IV, B, XII, 89, 232-3° (MeOH); V, B, XIV + XV (71:29), 69, 138-69° (mixture); VI, -, XVI + XVII (86:14), 77, 108-22° (mixture). Similar results were obtained by reduction of I-IV with LiAlH4. Oxidation of 1.73 g. 3,5-dicyano-2-methyl-4-ethyl-1,2-dihydropyridine in 70 ml. EtOH with Ag2O from 7 g. AgNO3 gave 91% 3,5-dicyano-2-methyl-4-ethylpyridine (XVIII), m. 68-8.5°, sublimed 55-60°/0.4 mm. Treatment of 1.28 g. XVIII with MeMgI prepared from 750 mg. Mg and 1.9 ml. MeI gave 61% XVII, m. 101-2° (dilute acetone), which was oxidized with MnO2 to VI, m. 70-1°.

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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.Lv, Xin; Bao, Weiliang researched the compound: 1-(4-Chlorophenyl)pyrrolidin-2-one( cas:7661-33-8 ).Recommanded Product: 7661-33-8.They published the article 《A β-Keto Ester as a Novel, Efficient, and Versatile Ligand for Copper(I)-Catalyzed C-N, C-O, and C-S Coupling Reactions》 about this compound( cas:7661-33-8 ) in Journal of Organic Chemistry. Keywords: arylamide preparation copper catalyzed coupling keto ester ligand; arylimidazole preparation copper catalyzed coupling keto ester ligand; aryl ether preparation copper catalyzed coupling keto ester ligand; copper catalyzed coupling keto ester ligand aryl thioether preparation. We’ll tell you more about this compound (cas:7661-33-8).

Employing Et 2-oxocyclohexanecarboxylate as a novel, efficient, and versatile ligand, the copper-catalyzed coupling reactions of various N/O/S nucleophilic reagents with aryl halides could be successfully carried out under mild conditions. A variety of products including N-arylamides, N-arylimidazoles, aryl ethers, and aryl thioethers were synthesized in good to excellent yields.

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The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 3-Bromo-4-chloronitrobenzene, is researched, Molecular C6H3BrClNO2, CAS is 16588-26-4, about 4-Methoxy-N-[2-(trifluoromethyl)biphenyl-4-ylcarbamoyl]nicotinamide: A Potent and Selective Agonist of S1P1, the main research direction is methoxytrifluoromethyl biphenylyl carbamoyl nicotinamide analog preparation S1P1 agonist; Sphingosine-1-phosphate-1 receptor agonist; immunosuppression; multiple sclerosis; peripheral lymphocyte count.Synthetic Route of C6H3BrClNO2.

The sphingosine-1-phosphate-1 receptor (S1P1) and its endogenous ligand sphingosine-1-phosphate (S1P) cooperatively regulate lymphocyte trafficking from the lymphatic system. Herein, we disclose 4-methoxy-N-[2-(trifluoromethyl)biphenyl-4-ylcarbamoyl]nicotinamide (8), an uncommon example of a synthetic S1P1 agonist lacking a polar headgroup, which is shown to effect dramatic reduction of circulating lymphocytes (POC = -78%) in rat 24 h after a single oral dose (1 mg/kg). The excellent potency that 8 exhibits toward S1P1 (EC50 = 0.035 μM, 96% efficacy) and the >100-fold selectivity that it displays against receptor subtypes S1P2-5 suggest that it may serve as a valuable tool to understand the clin. relevance of selective S1P1 agonism.

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Recommanded Product: 7661-33-8. 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: 1-(4-Chlorophenyl)pyrrolidin-2-one, is researched, Molecular C10H10ClNO, CAS is 7661-33-8, about Condensation of aniline, o-phenylenediamine, and their derivatives with lactones. Author is Shazhenov, A. A.; Kadyrov, Ch. Sh.; Kurbanov, P..

Heating equimol. amounts of RNH2 and γ-butyrolactone at 130-305° gave 2-pyrrolidinones (I) (R and % yield given): Ph, 80; m-MeC6H4, 75; p-MeC6H4, 78; m-BrC6H4, 60; α-naphthyl, 14; m-CF3C6H4, 19; p-ClC6H4, 77; β-naphthyl, 62. Boiling a mixture of equimol. amounts of substituted aromatic o-diamines and γ- or β-lactones in xylene gave the following 3-(2-benzimidazolyl)-1-alkanoles (II) (R1, R2, X, and % yield given): H, CCl3, CH2, 61; Cl, CCl3, CH2, 85; Me, CCl3, CH2, 87; H, H, (CH2)2, 80; Cl, H, (CH2)2, 24; Me, H, (CH2)2, 31; H, Me, (CH2)2, 78; H, Pr, (CH2)2, 78; Cl, Pr, (CH2)2, 7; Me, Pr, (CH2)2, 13; H, Bu, (CH2)2, 75; Cl, Bu, (CH2)2, 17; H, C7H15, (CH2)2, 66; H, H, CHOHCMe2, 50; H, H, CHAcCH2, 40; Cl, H, CHAcCH2, 16. Uv data for II are given.

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He, Hongming; Sun, Fuxing; Zhao, Nian; Yuan, Rongrong; Zhu, Guangshan published the article 《Three novel zinc(II) metal-organic frameworks based on three tetrazolate ligands: synthesis, structures and photoluminescence》. Keywords: luminescence zinc phenylenetetrazole pyridinetetrazole imidazoletetrazole metal organic framework; crystal structure zinc phenylenetetrazole pyridinetetrazole imidazoletetrazole metal organic framework; mol structure zinc phenylenetetrazole pyridinetetrazole imidazoletetrazole metal organic framework; electrochem zinc phenylenetetrazole pyridinetetrazole imidazoletetrazole metal organic framework.They researched the compound: Pyridine-3,5-dicarbonitrile( cas:1195-58-0 ).COA of Formula: C7H3N3. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:1195-58-0) here.

Three metal-organic frameworks (MOFs), [Zn(BPT)H2O] (JUC-121), [Zn5(IBT)6]·8[H2NMe2]·DMA (JUC-122) and [Zn(TPD)(H2O)2]·0.5H2O (JUC-123) (JUC = Jilin University, China), H2BPT = (5-bromo-1,3-phenylene)bis(tetrazole), H3IBT = 4,5-bis(tetrazol-5-yl)imidazole and H2TPD = 3,5-di(tetrazol-5-yl)pyridine, were obtained by the reactions of Zn(NO3)2·6H2O and three tetrazolate ligands, which were characterized by single crystal x-ray diffraction, thermal gravimetric analyses (TGA), FTIR spectra (FTIR), elemental anal. (CHN) and powder X-ray diffraction (PXRD). From the crystal structures of these complexes and the coordination modes of the ligands, the authors can see that the tetrazolate ligands have multi-connectivity abilities to obtain intriguing varieties of mol. architectures. JUC-121 displays a three-dimensional (3D) network with the point symbol (4·65)2(42·84)(64·82). JUC-122 shows a two-dimensional (2D) framework with the point symbol (243)2(24)9 and JUC-123 has a 2-dimensional bimodal (3, 3)-connected net with the point symbol (4·82). The solid-state fluorescent spectra of JUC-121, JUC-122, JUC-123 and the free ligands were measured at room temperature

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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: 12080-32-9, is researched, Molecular C8H12Cl2Pt, about Efficient one-pot synthesis of diphenyl(pyrazin-2-yl)phosphine and its AgI, AuI and PtII complexes, the main research direction is diphenyl pyrazinylphosphine preparation crystal mol structure silver gold platinum; crystal mol structure pyrazinylphosphine silver gold platinum complex.Category: alcohols-buliding-blocks.

A convenient one-pot synthesis of diphenyl(pyrazin-2-yl)phosphine has been developed based on reaction of Ph3P with metallic lithium followed by treatment of the Ph2PLi formed with 2-chloropyrazine. The AgI, AuI and PtII chloride complexes derived from this phosphine have been synthesized and structurally characterized.

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