Category: 112-63-0

Mori, Yoshihiro; Shinoda, Hiroyuki; Nakano, Taku; Kitagawa, Taiji published the artcile< Formation and Decay Behaviors of Laser-Induced Transient Species from Pyrene Derivatives 1. Spectral Discrimination and Decay Mechanisms in Aqueous Solution>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is decay mechanism transient species pyrene derivative spectra.

The UV and visible absorption spectra of laser-induced transient species from the following pyrene derivatives were measured in aqueous or aqueous ethanol solution: Na pyrenesulfonate (NaPS), tetrasodium pyrenetetrasulfonate (Na4PS4), pyrenecarboxylic acid (HPC), and pyrenebutyric acid (HPB). The major transient species contributing to the intense absorption peaks were revealed from the quenching experiments The absorption spectra of triplets, as well as cation radicals, were separable from the other transients by selecting the exptl. conditions (atm., coexisting quencher, and delay time). The cation radicals produced from PS-, PB- and PC- anions showed an absorption maximum at ∼460 nm, close to that of pyrene cation radical. Their decay behaviors in the absence of any addnl. quenchers were dominated by bimol. reaction kinetics with each parent mol., of which the rate constants were very similar. This result is consistent with the previous proposal that these cation radicals exist as zwitterions such as P•+S-. The cation radical from Na4PS4 showed a strong absorption peak at 505 nm and exhibited different decay behaviors, suggesting that this cation radical appears not to be a simple zwitterion. Three specific quenchers, I-, OH-, and SO32-, strongly accelerate the decay rates of these cation radicals. MeSO3- anion, mimicking the headgroup of tentative anionic surfactants, and several inorganic anions such as ClO4- were poor quenchers for the cation radicals even at the highest concentration The authors also discussed the origin of two addnl. peaks at 375 and 395 nm observed in the transient absorption spectra of NaPS and HPB. On the triplet-triplet absorption, the molar absorptivities of Na4PS4 and NaPS could be determined using the ground-state depletion method. These results are discussed in terms of applications to probe the micellar microenvironment.

Journal of Physical Chemistry A published new progress about Anionic surfactants (effect on decay of zwitterion of radical cation). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate.

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

Sugai, Tomoya; Okuyama, Yuya; Shin, Jaehyun; Usui, Shunme; Hisada, Shoko; Osanai, Ryosuke; Oishi, Takeshi; Sato, Takaaki; Chida, Noritaka published the artcile< Synthesis of kaitocephalin facilitated by three stereoselective allylic transposition reactions>, COA of Formula: C19H34O2, the main research area is kaitocephalin preparation stereoselective Overman Ichikawa rearrangement.

A stereoselective synthesis of kaitocephalin is described. The central strategy is based on chirality transfer reactions of three secondary alcs. derived from L-arabinose. The Overman rearrangement of an α,β-unsaturated ester and intramol. anti-type SN2′ reaction constructed a β-hydroxy-α,α- disubstituted amino acid moiety. The third chirality transfer reaction is the Ichikawa rearrangement. These stereoselective reactions successfully established the three contiguous stereocenters embedded in kaitocephalin.

Chemistry Letters published new progress about Diastereoselective synthesis. 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

Jansze, Suzanne M.; Ortiz, Daniel; Fadaei Tirani, Farzaneh; Scopelliti, Rosario; Menin, Laure; Severin, Kay published the artcile< Inflating face-capped Pd6L8 coordination cages>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is preparation inflating face capped palladium iron coordination cage complex; crystal structure face capped palladium iron coordination cage complex.

Tritopic metalloligands were used to form two Pd6L8-type coordination cages. With mol. weights of >15 kDa and Pd···Pd distances of up to 4.2 nm, these complexes are among the largest palladium cages described to date. The metalloligands (L1 and L2) were synthesized and characterized by single crystal structure determination One of the two cage complexed were characterized by single crystal structure determination

Chemical Communications (Cambridge, United Kingdom) published new progress about Cage compounds Role: PRP (Properties), SPN (Synthetic Preparation), PREP (Preparation) (Crystal structure). 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

Ma, Zhiwei; Liu, Zhijing; Wang, Chuanchuan; Chen, Xiaopei; Tao, Jingchao; Lv, Quanjian published the artcile< A novel isosteviol-based bifunctional squaramide organocatalyst for enantioselective Michael addition of acetylacetone to nitroolefins>, Category: esters-buliding-blocks, the main research area is nitroalkane preparation enantioselective; diketone nitroolefin Michael addition bifunctional squaramide catalyst; Michael addition; acetylacetone; nitroolefin; organocatalysis; tertiary amine-squaramide.

In this study, novel chiral tertiary amine-squaramide I derived from the natural product of the stevioside was developed and applied into the asym. Michael addition of acetylacetones RC(O)CH2C(O)R1 (R = R1 = Me, Ph) to nitroolefins (E)-R2CH=CHNO2 (R2 = naphthalen-1-yl, 4-chlorophenyl, 2-furanyl, etc.). This asym. reaction performed well, and a series of enantiomerically enriched compounds (S/R)-RC(O)CH(CH(R2)CH2NO2)C(O)R1 were obtained in high yields (up to 96%) with excellent enantioselectivities (up to 99% ee).

Chirality published new progress about Alkanes, nitro Role: SPN (Synthetic Preparation), PREP (Preparation). 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

Zhdanov, A. K. published the artcile< The heat capacities of some pure liquids and azeotropic mixtures>, Application of C19H34O2, the main research area is .

Measurements of the heat capacities (Cp) were made for CCl4, PrOH, benzene, iso-BuOH, PhMe and the azeotropic mixtures: benzene-MeCOEt, PhMe-iso-AmOH, benzene-PrOH, CCl4-PrOH, CCl4-iso-BuOH, PhMe-PrOH, CCl4-iso-BuOH and PhMe-iso-BuOH at 4.5-6°, 24-5° and 44.5-47.2°. The deviations of results were ± 0.001 and the exptl. errors of the Cp values did not exceed 0.5%. Interpolation equations of the type Cp = A + BT + CT2 were also obtained. The following values were obtained for CCl4 at 278.68, 298.01 and 319.28°, resp.: Cp 0.2013, 0.2053 and 0.2095. For PrOH the corresponding values at 279.66, 290.76, 297.57, 304.06 and 318.83° were Cp 0.5431, 0.5623, 0.5781, 0.5951 and 0.6480. For iso-BuOH at 278.34, 296.35 and 319.01° the values were Cp 0.5322, 0.5916 and 0.6600. For benzene at 281.38, 295.61 and 318.81° the values were Cp 0.4044, 0.4141 and 0.4316. For PhMe at 278.51, 296.80 and 320.42° the values were Cp 0.3871, 0.4077 and 0.4312. For the azeotropic mixture benzene (62.5%)-MeCOEt (37.5%) at 278.33, 298.27 and 318.8° the values were Cp 0.4390, 0.4587 and 0.4787. For PhMe (86%)-iso-AmOH (14%) at 278.25, 289.56, 305.36 and 319.77° the values were, resp., Cp 0.4328, 0.4147, 0.4647 and 0.4777. For benzene (83.1%)-PrOH (16.9%) at 278.43, 297.59 and 318.88° the values were, resp., Cp 0.4623, 0.4908 and 0.5115. For CCl4 (88.5%)-PrOH (1.5%) at 278.86, 297.04 and 319.65° the values were Cp 0.2523, 0.2681 and 0.2781. For CCl4 (82%)-iso-PrOH (18%) at 278.26, 296.65 and 320.12° the values were Cp 0.2814, 0.3003 and 0.3316. For PhMe (47.5%)-PrOH (52.5%) at 278.44, 296.09 and 318.41° the values were Cp 0.5041, 0.5365 and 0.5787. For PhMe (55.5%)-iso-BuOH (45.5%) at 278.62, 295.34 and 317.75° the values were Cp 0.4987, 0.5223 and 0.5667. For CCl4 (94.5%)-iso-BuOH (5.5%) at 278.56, 298.77 and 319.60° the values were Cp 0.2320, 0.2462 and 0.2540. The values of A, B × 102 and C × 104 in the interpolation equation and the value k1 × 106 for the equation MCpe = k1Te3 are, resp., CCl4, 22.32, 3.103, – and 0.78; PrOH 176.34, -110.5483, 21.1542 and 1.12; iso-BuOH -25.31, 23.26, – and 1.14; benzene 18.45, 3.5627, 0.3813 and 0.81; PhMe 8.42, 9.76, – and 0.82; benzene-PrOH -75.06, 65.699, -9.4844 and 0.94; benzene-MeCOEt 12.56, 7.428, – and 0.89; PhMe-iso-AmOH 12.12, 9.875, – and 0.89; CCl4-PrOH -111.20, 89.5549, 13.5827 and 0.93; CCl4-iso-PrOH 71.85, -38.0897, 8.7729 and 1.07; CCl4-iso-BuOH -90.26, 76.4934, -11.4848 and 0.93; PhMe-PrOH 7.65, 7.5249, 0.9889 and 1.00; PhMe-iso-BuOH 108.42, -57.7821, 12.1092 and 1.15. Four references.

Zhurnal Obshchei Khimii published new progress about Azeotropes. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Application of C19H34O2.

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

Singh, Yashvir; Sharma, Abhishek; Singh, Nishant Kumar; Chen, Wei-Hsin published the artcile< Development of bio-based lubricant from modified desert date oil (balanites aegyptiaca) with copper nanoparticles addition and their tribological analysis>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is lubricant modified desert date oil copper nanoparticles.

Based on the environmental concerns related to the pollution caused by the vehicles and the demand for an alternative to the conventional lubricant resulted in the studies to be conducted that are environmental-friendly. In this study, friction and wear behavior of the surfaces in contact was conducted to observe their tendency during the application of an alternative lubricant to the mineral oil. Desert date oil was having the potential of an alternative to the mineral oil and they were available in abundant amount During the initial stage, desert date oil was transesterified using the two-step transesterification process and further it was added to the trimethylolpropane. After this process, nanoparticles were added in different amounts to the modified desert date oil. The friction and wear behavior of the modified desert date oil was tested using four-ball tester under different conditions. For the surface topog. anal., SEM and EDS anal. were conducted. The concentration of the nanoparticles added to the biolubricant was considered based on the previous work conducted. The input parameters which were considered during the test consists of normal load, sliding speed, variation in the addition of the nanoparticles to the biolubricant (0.3-1.6% with a gap of 0.3%). Based on the study conducted, 0.9% concentration of the copper nanoparticles showed a significant improvement in term of reducing COF, wear rate, mean wear scar diameter and improved worn surface morphol. was obtained with comparison to the mineral oil. The maximum increment in the properties relative to the tribol. anal. was shown when the concentration of the copper nanoparticles to the modified desert date oil increases beyond 0.9% copper nanoparticles during the addition in the amount of 1.3% and 1.6%. Conclusively, the performance of the modified desert date oil with 0.9% copper nanoparticles addition has the potential impact as a lubricant with comparison to the mineral oil and other samples. The modified desert date oil with an application of 0.9% copper nanoparticles could be considered as a suitable alternative to the mineral oil while considering environmental concern and energy saving.

Fuel published new progress about Balanites aegyptiaca. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate.

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

Tang, Feiyu; Shao, Deyi; Chen, Gong; Luo, Haihua published the artcile< Osmotic components in cotton (Gossypium Hirsutum L.) fibers in response to soil moisture deficit during fiber expansion>, Synthetic Route of 112-63-0, the main research area is Gossypium Hirsutum fiber expansion soil moisture deficit.

The present study aimed to determine how main osmotic active substances (malate, potassium and soluble sugars) in cotton fibers respond to soil drought. A pot study with two water regimes was performed in 2015 and 2016 using two cotton lines A001 and A705. The irrigated plants (control) were watered at 1-d interval with the optimum quantity of underground water determined on the basis of a gravimetric method. Drought treatment was defined as withdrawing water from pots until the leaf wilting symptom was visible, and water stressed plants were exposed to limited water supply for 25 days receiving 50% of the control irrigation at 2-d interval. Following 25 days of water deficit treatment, those plants were re-watered with the same quantity as the control. Drought induction caused a significant reduction in fiber length and strength in A001. Net photosynthetic rate (Pn), stomatal conductance (gs), and transpiration rate (E) in A001 and A705 were reduced significantly by soil drought indicating the present water deficit design did generate a photosynthetically physiol. difference. The depressed leaf photosynthesis led to the deficient accumulation of soluble sugars, malate and potassium in water stressed fibers, and in turn to the reduced fiber length.

Pakistan Journal of Botany published new progress about Bioaccumulation. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Synthetic Route of 112-63-0.

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

Husstedt, Urda; Schaefer, Hans J. published the artcile< Retention of configuration in double bond protection-deprotection by bromination-cathodic debromination>, Application of C19H34O2, the main research area is double bond protection configuration; bromination debromination double bond protection.

The double bond functionality of unsaturated carboxylic acids and alcs. was protected by bromination with pyridinium hydrobromide perbromide under mild conditions. Deprotection was achieved by cathodic reduction at -1.4 V. Overall yields of 68-99% were obtained and the configuration of the double bond was retained by ≥96%.

Tetrahedron Letters published new progress about Alcohols, unsaturated Role: RCT (Reactant), RACT (Reactant or Reagent). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Application of C19H34O2.

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

Shigenobu, Keisuke; Shibata, Masayuki; Dokko, Kaoru; Watanabe, Masayoshi; Fujii, Kenta; Ueno, Kazuhide published the artcile< Anion effects on Li ion transference number and dynamic ion correlations in glyme-Li salt equimolar mixtures>, HPLC of Formula: 112-63-0, the main research area is glyme lithium salt dynamic ion correlation transference equimolar mixture.

To achieve single-ion conducting liquid electrolytes for the rapid charge and discharge of lithium(Li) secondary batteries, improvement in the Li+ transference number of the electrolytes is integral. Few studies have established a feasible design for achieving Li+ transference numbers approaching unity in liquid electrolytes consisting of low-mol.-weight salts and solvents. Previously, we studied the effects of Li+- solvent interactions on the Li+ transference number in glyme- and sulfolane-based molten Li salt solvates and clarified the relationship between this transference number and correlated ion motions. In this study, to deepen our insight into the design principles of single-ion conducting liquid electrolytes, we focused on the effects of Li+-anion interactions on Li ion transport in glyme-Li salt equimolar mixtures with different counter anions. Interestingly, the equimolar triglyme (G3)-lithium trifluoroacetate (Li[TFA]) mixture ([Li(G3)][TFA]) demonstrated a high Li+ transference number, estimated via the potentiostatic polarization method (tPPLi = 0.90). Dynamic ion correlation studies suggested that the high tPPLi could be mainly ascribed to the strongly coupled Li+-anion motions in the electrolytes. Furthermore, high-energy X-ray total scattering measurements combined with all-atom mol. dynamics simulations showed that Li+ ions and [TFA] anions aggregated into ionic clusters with a relatively long-range ion-ordered structure. Therefore, the collective motions of the Li ions and anions in the form of highly aggregated ion clusters, which likely diminish rather than enhance ionic conductivity, play a significant role in achieving high tPPLi in liquid electrolytes. Based on the dynamic ion correlations, a potential design approach is discussed to accomplish single-ion conducting liquid electrolytes with high ionic conductivity

Physical Chemistry Chemical Physics published new progress about Correlation function (dynamic ion). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, HPLC of Formula: 112-63-0.

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

Chapman, N. B.; Shorter, J.; Toyne, K. J. published the artcile< Conformation and reactivity. III. Kinetics of the acid-catalyzed hydrolysis of the methyl cyclohexanemono- and -dicarboxylates and 4-tert-butylcyclohexanecarboxylates>, Product Details of C19H34O2, the main research area is .

The acid-catalyzed hydrolysis of Me cyclohexanecarboxylate (in 1:1 and 1:3 dioxane-water), of all the dimethyl and Me H cyclohexanedicarboxylates (in 1:3 dioxane-water), and of Me cis-(I) and trans-4-tert-butylcyclohexanecarboxylate (II) (in 1:1 dioxane-water) has been studied and the Arrhenius activation energies and non-exponential factors have been determined The rate coefficients for the first stage of hydrolysis of the diesters were obtained by using the Wideqvist method (CA 50, 9113b). From the results for I and II an equatorial MeO2C is shown to react 4.8 times more rapidly than an axial MeO2C at 90°. On this basis the results for the other esters are discussed in relation to their possible conformations. The MeO2C group is more stable in the equatorial than in the axial conformation, but the results for acid-catalyzed hydrolysis of the trans 1,2-esters are best explained by assuming that the compound is diaxial. Polar effects in acid-catalyzed hydrolysis of the esters are small. Some of the results obtained by Cavell, et al. (CA 54, 18387e) for the alk. hydrolysis of the esters are discussed in the light of the results for the acid-catalyzed hydrolysis, and an attempt has been made to sep. polar effects from steric effects in alk. hydrolysis.

Journal of the Chemical Society published new progress about Conformation. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Product Details of C19H34O2.

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