Category: 112-63-0

Zhou, Jiading; Li, Weimin; Kong, Congcong; Li, Dongyang; Cui, Zhijian; Xue, Yinghao; Lu, Yuhan; Ren, Qinggong published the artcile< Preparation of a novel ionic liquid and its application in the synthesis of trimethylolpropane trioleate>, COA of Formula: C19H34O2, the main research area is oleic acid esterification catalyst ionic liquid thermal stability.

The 1-(3-sulfopropyl)-3-vinylimidazole inner salt was prepared through the reaction of 1-vinylimidazole and 1,3-propanesultone, and then, it was mixed with different acids to synthesize three kinds of vinylimidazole acidic ionic liquids The three ionic liquids (ILs) were used as catalysts for the catalytic synthesis of trimethylolpropane trioleate, and the effects of the catalyst amount, reaction time, reaction temperature, and molar ratio of reactants on the catalytic activity were studied. The esterification rates obtained using the three ILs as catalysts could reach 95.82%, 95.37%, and 97.88%. The catalytic kinetics of the synthesized ionic-liquid catalyst was studied, and the activation energies of the forward and reverse reactions were 13.9872 kJ mol-1 and 13.9918 kJ mol-1, and the pre-exponential factors were 2.781 x 10-2 L mol-1 h-1 and 4.835 x 10-5 L mol-1 h-1, resp. The vinylimidazole acidic ILs showed good catalytic activity in the esterification reaction; thus, the catalysts are suitable for esterification reaction systems and valuable for research. Moreover, the existence of double bonds paves a way for the subsequent research on polymerized ionic liquids

Reaction Kinetics, Mechanisms and Catalysis published new progress about Esterification. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, COA of Formula: C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Semenycheva, Lyudmila; Chasova, Victoria; Matkivskaya, Julia; Fukina, Diana; Koryagin, Andrey; Belaya, Tatiana; Grigoreva, Alexandra; Kursky, Yuri; Suleimanov, Evgeny published the artcile< Features of Polymerization of Methyl Methacrylate using a Photocatalyst-the Complex Oxide RbTe1.5W0.5O6>, Reference of 112-63-0, the main research area is rubidium tungsten tellurate photocatalyst methyl methacrylate polymerization.

Radical polymerization of Me methacrylate in an aqueous emulsion was carried out using the complex oxide RbTe1.5W0.5O6 as a photoinitiator under visible light irradiation with �= 400-700 nm. Study of the polymerization process and reaction products using methods of phys. and chem. anal. (GPC, IR, NMR, etc.) has shown that there are several directions of monomer transformations at the same time. Polymethyl methacrylate with Mn �140-145 kDa, produced in the organic phase, is a result of polymerization initiation by a hydroxyl radical formed due to complex transformations of electron-hole pairs during photocatalyst irradiation Moreover, the interaction of the hydroxyl radical with OH-groups on the complex oxide RbTe1.5W0.5O6 surface and the subsequent formation of oxygen-centered radicals lead to grafting polymer macromols. on the photocatalyst surface. In addition, Me methacrylate is able to oxidize to a cyclic dimer with terminal double bonds and form a polymer with cyclic dimer links due to coordination by double bonds on the RbTe1.5W0.5O6 surface. The high activity of the hydroxyl radical allows to obtain the graft copolymer PMMA-pectin by grafting the polymer product on the surface of the natural polymer-pectin. Comparison of the sponge morphol. of the graft copolymer PMMA-pectin and the initial pectin samples using the SEM has shown a noticeable difference in their structural and topol. organization. It is especially interesting in terms of studying the properties of the graft copolymer as a material for the scaffolds.

Journal of Inorganic and Organometallic Polymers and Materials published new progress about Absorption. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Reference of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Yi, Qing-yan; Guo, Xu; Xin, Li-li; Qin, Si-ning; Zhang, Hui; Xu, Yong-nan published the artcile< Synthesis of 5-(cycloalkane)-2H-pyran-2-one derivatives>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is cycloalkanepyranone derivative coupling agent antitumor agent preparation.

Some 5-(substituted)-2H-pyran-2-one derivatives were designed and synthesized, and higher derivatives of anti-cancer activity were filtered out. Eight 2-pyrone compounds were synthesized by the multi-step reaction using a variety of 4-substituted cyclohexanone. Eight new 5-(cycloalkane)-2H-pyran-2-one derivatives were synthesized, and the structures of the new compounds were characterized by 1H NMR and MS techniques.

Shenyang Yaoke Daxue Xuebao published new progress about Antitumor agents. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Shepherd, Robert G. published the artcile< Sulfonamide preparations in glacial acetic acid>, Application In Synthesis of 112-63-0, the main research area is ACID/acetic; SULFONAMIDES/preparation.

Because in the preparation of N1-(halophenyl)-N4-acetylsulfanilamides (I) in pyridine or PhNMe2 side reactions take place, the use of AcOH as reaction medium was tried and was found to be satisfactory. In general, 1 mol. aniline in 400-1000 cc. glacial AcOH is heated at 100æŽ?and treated with a 25% excess of the appropriate sulfonyl chloride. With some anilines the amine-HCl seps. and dissolves on addition of NaOAc. The latter is added in 0.5, 0.25, 0.125, and 0.125 mol. portions with an addnl. 0.25 mol. After each addition the mixture is brought to a boil, H2O is added with stirring, and the clear mixture cooled, causing the separation of I. The following p-AcHNC6H4SO2NHC6H2RR’R” are prepared with the following substituents on the N1-Ph residue: none, 90%, m. 214-15æŽ? 3,5-di-Cl 87%, m. 239-40æŽ? 3,5-di-Br, 83%, m. 242-3æŽ? 3,4,5-tri-Cl, 85%, m. 272-3æŽ? 2-OMe, 84%, m. 212-13æŽ? 3-OMe, 68%, m. 192-3æŽ? 4-OMe, 90%, m. 200-1æŽ? 3-NO2, 74%, m. 244-5æŽ? 4-NO2, 56%, m. 263-4æŽ? 4-NHAc, 50%, m. 293-4æŽ? Also prepared were: p-O2NC6H4SO2NHC6H3Br2-3,5, 92%, m. 175-6æŽ? PhSO2NHPh, 89%, m.1 12-13æŽ? PhSO2NHC6H4Cl-p, 91%, m. 122-3æŽ? PhSO2NHC6H3Br2-3,5, 77%, m. 130-1æŽ? In addition to these compounds, 0.2-0.5% PhNHAc is usually formed. For a study of side-reactions, 3.9 g. AcHNC6H4SO2Cl in 10 cc. hot AcOH containing 0.3 g. H2O is treated with 2.7 g. AcONa, causing the separation of 3.6 g. precipitate which on hydrolysis gives 99% PhNH2. When a mixture of 17.7 g. PhSO2Cl (II) and 4.5 g. (CO2H)2 is heated to 200æŽ?and the volatile material distilled off in vacuo, 46% (PhSO2)2O, m. 92æŽ? is obtained. PhSO2Cl and AcONa at 230æŽ?give a distillate containing AcCl, Ac2O, and AcOH with PhSO3Na and unchanged II as residue. When 9.3 g. PhNH2 and 17.7 g. PhSO3Et in 50 cc. AcOH are heated at 90æŽ?0.5 h., and the mixture is diluted with N HCl and extracted with ether, 1% PhSO2NHPh, m. 114æŽ? is obtained. The aqueous solution is made alk., extracted with ether, and the ether residue treated with p-MeC6H4SO2Cl, giving N-(p-tolylsulfonyl)-N-ethylaniline, m. 88æŽ? Bromination of 224 g. p-O2NC6H4NH2 in 2 l. AcOH at 65æŽ?by addition of 520 g. Br in 1200 cc. AcOH over a period of 4 h. gives 95% 2,6-dibromo-4-nitroaniline (III), m. 204-6æŽ? III is diazotized with ONSO3H according to Hodgson and Walker (C.A. 28, 1325.9) and deaminated according to H. and Turner (C.A. 37, 1421.3), giving 70% 3,5-Br2C6H3NO2 (IV), m. 106æŽ? Catalytic reduction of IV with Raney Ni in absolute EtOH at room temperature and atm. pressure gives 80% 3,5-Br2C6H3NH2, m. 56-7æŽ? with SnCl2 the yield is 64% and with Na2S2O4 only 25%. 3,4,5-Cl3C6H2NH2 is prepared in 70% yield by converting 2,6,4-Cl2(O2N)C6H2NH2 into 3,4,5-Cl3C6H2NO2 according to H. and W., followed by reduction with Raney Ni.

Journal of Organic Chemistry published new progress about Reduction. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Application In Synthesis of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Shen, Zhengyuan; Chen, Qile P.; Xie, Shuyi; Lodge, Timothy P.; Siepmann, J. Ilja published the artcile< Effects of Electrolytes on Thermodynamics and Structure of Oligo(ethylene oxide)/Salt Solutions and Liquid-Liquid Equilibria of a Squalane/Tetraethylene Glycol Dimethyl Ether Blend>, COA of Formula: C19H34O2, the main research area is oligoethylene oxide salt squalane tetraethylene glycol dimethyl ether blend.

Gibbs ensemble Monte Carlo simulations for salt-doped oligo(ethylene oxide) (OEO, Mw = 90-266 g/mol) solutions show that the presence of ions leads to significant increases in the cohesive energy d. (螤CED) and the enthalpy of vaporization for OEO chains but that compensation by entropic contributions leads to only small changes in the Gibbs free energy of transfer and vapor pressure. At the same relative ion concentration (r) and temperature, the 螤CED values of the salt-doped systems order as LiClO4 > LiF > CsClO4 éˆ?CsF. Structural anal. indicates significant ion clustering in addition to coordination of cations by OEO chains. After accounting for ion clustering via the van’t Hoff factor, the solvents’ vapor pressures are well described by Raoult’s law. Experiments and simulations for a squalane/tetraethylene glycol di-Me ether blend (xW,OEO = 0.65) show that the addition of LiClO4 does not significantly alter the miscibility gap below 0.95 TCP,free, the critical temperature of the salt-free blend. However, the coexistence curve for the LiClO4-doped system does not close with the usual power-law scaling at T > 0.95 TCP,free as transfer of OEO chains to the squalane-rich phase leads to an increase in r in the OEO-rich phase, which, in turn, makes it a less hospitable environment for squalane.

Macromolecules (Washington, DC, United States) published new progress about Cohesive energy. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, COA of Formula: C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Sugiura, Hirotaka; Yamazaki, Shoko; Go, Kakeru; Ogawa, Akiya published the artcile< Intramolecular Cyclization of 3,3-Diarylpropenylamides of Electron-Deficient Alkenes: Stereoselective Synthesis of Functionalized Hexahydrobenzo[f]isoindoles>, Computed Properties of 112-63-0, the main research area is electron deficient alkene diarylpropenylamide intramol Diels Alder; hexahydrobenzo isoindole stereoselective preparation substituent temperature solvent effect.

Intramol. Diels-Alder reactions of various 3,3-diarylpropenylamides of electron-deficient alkenes to give hexahydrobenzo[f]isoindoles were investigated. Reaction of 1,1,2-ethenetricarboxylic acid 1,1-di-Et ester with 3,3-diaryl-2-propen-1-amines under the amide formation conditions gave the tricyclic compounds in sequential processes involving intramol. Diels-Alder reaction. The reaction gave cis- and trans-fused tricyclic compounds selectively, depending on the substituents on the benzene ring, reaction temperature and solvent. In the reaction with dissym. substituted 3,3-diaryl-2-propen-1-amines, trans-substituted aryl group reacted mainly as a styrene component. Amides of electron-deficient alkenic carboxylic acids such as fumarate do not undergo cyclization at room temperature sequentially and the reaction on heating gave trans-fused hexahydrobenzo[f]isoindoles. The origin of the observed stereoselectivity has been examined by the DFT calculations

European Journal of Organic Chemistry published new progress about Alkenes, electron-deficient Role: RCT (Reactant), RACT (Reactant or Reagent). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Computed Properties of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Chen, Si-Cong; Zhu, Qi; Cao, Yuhui; Li, Chen; Guo, Yinliang; Kong, Lingran; Che, Jinteng; Guo, Zhixian; Chen, Han; Zhang, Nan; Fang, Xianhe; Lu, Jia-Tian; Luo, Tuoping published the artcile< Dealkenylative Ni-Catalyzed Cross-Coupling Enabled by Tetrazine and Photoexcitation>, Application In Synthesis of 112-63-0, the main research area is olefin aryl alkenyl bromide dealkenylative cross coupling nickel catalyst.

A new and general method to functionalize the C(sp3)-C(sp2) bond of alkyl and alkene linkages has been developed, leading to the dealkenylative generation of carbon-centered radicals that can be intercepted to underwent Ni-catalyzed C(sp3)-C(sp2) cross-coupling. This one-pot protocol leverages the easily procured alkene feedstocks for organic synthesis with excellent functional group compatibility without the need for a photoredox catalyst.

Journal of the American Chemical Society published new progress about Alkenes Role: RCT (Reactant), RACT (Reactant or Reagent). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Application In Synthesis of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Enoki, Takashi; Tanaka, Kazunori; Watanabe, Tsuyoshi; Oya, Taro; Sakiyama, Takaharu; Takeoka, Yukikazu; Ito, Kenji; Wang, Guoqiang; Annaka, Masahiko; Hara, Kazuhiro; Du, Rose; Chuang, Jeffrey; Wasserman, Kevin; Grosberg, Alexander Yu.; Masamune, Satoru; Tanaka, Toyoichi published the artcile< Frustrations in Polymer Conformation in Gels and their Minimization through Molecular Imprinting>, Application In Synthesis of 112-63-0, the main research area is crosslinked polymer gel conformation memory mol imprinting frustration.

An exptl. realization of a gel system is reported in which frustrations exist and can be minimized, thus meeting 2 crucial criteria predicted to enable memory of conformations in polymers. The gels consist of a thermosensitive major monomer component and two minor components. One minor component is pos. charged and will form complexes around neg. charged target mols. placed in solution The complexes can be imprinted into the gel by then crosslinking the second minor component, which will form crosslinks addnl. to those in the major polymer matrix. The complexes are destroyed and reformed upon swelling and reshrinking of the gels, showing that memorization has been achieved.

Physical Review Letters published new progress about Memory effect. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Application In Synthesis of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Malsawmdawngliana; Zohmachhuana, Alex; Vabeiryureilai, M.; Thangjam, Nurpen Meitei; Lalrinzuali, K.; Kumar, N. Senthil; Kumar, Awadhesh published the artcile< Antioxidant efficacy and cytotoxicity of ethanol extract of Clerodendrum infortunatum against different cell lines>, Category: esters-buliding-blocks, the main research area is Clerodendrum infortunatum cell line ethanol extract antioxidant efficacy cytotoxicity.

Clerodendrum infortunatum belongs to the Lamiaceae family and is a perennial shrub. It is widely known for their important medicinal values among the Mizo tribe. In the present study, the preliminary phytochem. screening, quantification of phenols, flavonoids and alkaloids, antioxidant activities by DPPH, O2- and ABTS assays and cytotoxicity by MTT assay against AGS (gastric cancer), HeLa (cervical) and HT-29 (colon) cell lines compared with normal cell line (Chang liver) were performed. Furthermore, the GC-MS profiling was also conducted. The results imply the presence of saponin, alkaloid, cardiac glycoside, phenol and flavonoid. The quantification shows that phenol content (64.35 mg/ g) was highest followed by flavonoid (61.93 mg/ g) and alkaloid (13.33 mg/ g). Its scavenging efficiency against DPPH with IC50 value was 47.99, against O2- with IC50 was 108 渭g/mL and against ABTS cations with IC50 was 50.05 渭g/mL, resp. The ethanol extract exhibited a maximum cytotoxicity against HeLa with IC50 value of 53.55 渭g/mL, AGS with IC50 value 82.44 渭g/mL and HT-29 with IC50 value of 142.2 渭g/mL. However, the extract showed comparatively less toxicity against normal cell lines. Moreover, 14 active compounds were confirmed in the GC-MS anal. of the extract HPLC study also infers the occurrence of the flavonoids rutin and quercetin. Therefore, the results of C. infortunatum ethanolic extract clearly specified that it has a very high antioxidant activity as well as cytotoxic properties; which proved that this ethnomedicinal plant can be used as an alternative agent to treat a variety of illnesses.

Indian Journal of Biochemistry & Biophysics published new progress about Alkaloids Role: ANT (Analyte), ANST (Analytical Study). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Kovtunenko, V. A.; Kisel, V. M.; Tyltin, A. K.; Babichev, F. S. published the artcile< Novel approach to the synthesis of dibenz[b,f]azocine system>, Formula: C19H34O2, the main research area is dibenzazocine acetylcyanohydroxydihydro preparation IR; cyanomethylbenzylanthranilate preparation acetylation; acetylcyanomethylbenzylanthranilate preparation cyclocondensation.

Alkylating o-H2NC6H4CO2Et with o-BrCH2C6H4CH2CN in Me2CHOH containing NaOAc gave 54% o-NCCH2C6H4CH2NRC6H4CO2Et-o (I; R = H), which was acetylated with AcCl in dry dioxane containing Et3N to give 94% I (R = Ac). Intramol. cyclocondensation reaction of the latter on heating in Me3COH containing KOCMe3 gave 73% title derivative II, the IR spectrum of which showed no keto tautomer either in the solid state or in DMSO solution

Khimiya Geterotsiklicheskikh Soedinenii published new progress about Cyclocondensation reaction, intramolecular. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Formula: C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics