Esters-buliding-blocks

Lakshmi, Dhana published the artcileChimeric polymers formed from a monomer capable of free radical, oxidative and electrochemical polymerisation, Synthetic Route of 3052-61-7, the publication is Chemical Communications (Cambridge, United Kingdom) (2009), 2759-2761, database is CAplus and MEDLINE.

A new monomer, which incorporates both aniline and methacrylamide functional groups, was shown to possess orthogonal polymerization behavior to produce conjugated polyaniline suitable for a wide range of applications.

Chemical Communications (Cambridge, United Kingdom) published new progress about 3052-61-7. 3052-61-7 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Amide, name is Benzyl diethylcarbamodithioate, and the molecular formula is C12H17NS2, Synthetic Route of 3052-61-7.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Whitmore, Frank C. published the artcileAction of primary Grignard reagents on tert-butylacetyl chloride. II, Computed Properties of 5340-78-3, the publication is Journal of the American Chemical Society (1938), 2790-2, database is CAplus.

Addition of EtMgBr to tert-BuCH₂COCl gives tert-BuCH₂CO₂Et(I), 77% of neopentylethylcarbinyl tert-butylacetate, 51% of Et neopentyl ketone and some tert-BuCH₂CO₂H (II). PrMgBr gives I, II, 36.7% of Pr neopentyl ketone, 20% of neopentylpropylcarbinyl tert-butylacetate and dodecenes. BuMgBr gives I, 34% of Bu neopentyl ketone, 23% of neopentylbutylcarbinyl tert-butylacetate and some tetradecenes. AmMgBr gives I, II, 29% of Am neopentyl ketone, 21% of neopentylamylcarbinyl tert-butylacetate. In no experiment was neopentyl carbinol or its tert-butylacetate found. The above yields are nearly the same as those obtained by adding the acid chloride to an excess of the Grignard reagent. Neopentyl chloride (0.8 mol.), through the Mg derivative, gives with HCHO 0.47 mol. of neopentylcarbinol, b₇₃₉ 140-6°; this with tert-BuCH₂COCl gives 57% of neopentylcarbinyl tert-butylacetate, b₂₆ 104°. tert-BuCH₂CO₂H and EtOH with concentrated H₂SO₄ gives 77% of Et tert-butylacetate, b₇₄₀ 102°.

Journal of the American Chemical Society published new progress about 5340-78-3. 5340-78-3 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is Ethyltert-butylacetate, and the molecular formula is C10H10O3, Computed Properties of 5340-78-3.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Kattamuri, Padmanabha V. published the artcileHydrogenation of Alkenes via Cooperative Hydrogen Atom Transfer, Related Products of esters-buliding-blocks, the publication is Journal of the American Chemical Society (2020), 142(45), 19316-19326, database is CAplus and MEDLINE.

Radical hydrogenation via hydrogen atom transfer (HAT) to alkenes is an increasingly important transformation for the formation of thermodn. alkane isomers. Current single-catalyst methods require stoichiometric oxidant in addition to hydride (H^–) source to function. Here we report a new approach to radical hydrogenation: cooperative hydrogen atom transfer (cHAT), where each hydrogen atom donated to the alkene arrives from a different catalyst. Further, these hydrogen atom (H•) equivalent are generated from complementary hydrogen atom precursors, with each alkane requiring one hydride (H^–) and one proton (H⁺) equivalent and no added oxidants. Preliminary mechanistic study supports this reaction manifold and shows the intersection of metal-catalyzed HAT and thiol radical trapping HAT catalytic cycles to be essential for effective catalysis. Together, this unique catalyst system allows us to reduce a variety of unactivated alkene substrates to their resp. alkanes in high yields and diastereoselectivities and introduces a new approach to radical hydrogenation.

Journal of the American Chemical Society published new progress about 5205-11-8. 5205-11-8 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester, name is 3-Methylbut-2-en-1-yl benzoate, and the molecular formula is C12H14O2, Related Products of esters-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Kuo, Ping-Chang published the artcileDimethyl itaconate, an itaconate derivative, exhibits immunomodulatory effects on neuroinflammation in experimental autoimmune encephalomyelitis, Name: Dimethyl itaconate, the publication is Journal of Neuroinflammation (2020), 17(1), 138, database is CAplus and MEDLINE.

Abstract: Itaconate has recently emerged as a regulator of immune cell functions, especially in macrophages. Studies show that itaconate is required for the activation of anti-inflammatory transcription factor Nrf2 by LPS in mouse and human macrophages, and LPS-activated IRG1^-/- macrophages that lack endogenous itaconate production exhibit augmented inflammatory responses. Thus, we investigated whether itaconate possesses an immunomodulatory effect on regulating MG activation and CNS inflammation in animal models of multiple sclerosis, exptl. autoimmune encephalomyelitis (EAE). Methods: Chronic C57BL/6 EAE was induced followed by DMI treatment. The effect of DMI on disease severity, blood-brain barrier (BBB) disruption, MG activation, peripheral Th1/Th17 differentiation, and the CNS infiltration of Th1/Th17 cells in EAE was determined Primary MG was cultured to study the effect of DMI on MG activation. Results: Our results show DMI ameliorated disease severity in the chronic C57BL/6 EAE model. Strikingly, DMI also exhibited a therapeutic effect on alleviating severity of relapse in the relapsing-remitting SJL/J EAE model. Conclusions: We demonstrate that DMI suppresses neuroinflammation and ameliorates disease severity in EAE through multiple cellular and mol. mechanisms, suggesting that DMI can be developed as a novel therapeutic agent for the treatment of MS/EAE through its immunomodulatory and anti-inflammatory properties.

Journal of Neuroinflammation published new progress about 617-52-7. 617-52-7 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Aliphatic hydrocarbon chain,Ester, name is Dimethyl itaconate, and the molecular formula is C7H10O4, Name: Dimethyl itaconate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Takeuchi, Glenn published the artcileLocation of double bonds in alkenyl acetates by negative ion tandem mass spectrometry, Formula: C14H26O2, the publication is Analytical Chemistry (1987), 59(6), 918-21, database is CAplus.

The collision-induced-dissociation (CID) mass spectra of the (M – H)^– ions of isomeric decenyl and dodecenyl acetates have been determined for 8-keV ions incident on helium collision gas. With the exception of the isomers with double bonds in the 3 and 4 positions, which give very similar CID mass spectra, the CID mass spectra observed are dependent on the double bond position. Of particular note is the specific elimination of olefin by cleavage to the double bond, accompanied by hydrogen migration, for the 6-alkenyl acetates and acetates with the double bond more remote from the acetate function.

Analytical Chemistry published new progress about 16974-11-1. 16974-11-1 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is (Z)-Dodec-9-en-1-yl acetate, and the molecular formula is C12H14O2, Formula: C14H26O2.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Pellis, Alessandro published the artcileEnzymatic synthesis of biobased polyesters utilizing aromatic diols as the rigid component, Computed Properties of 627-93-0, the publication is European Polymer Journal (2020), 109680, database is CAplus.

In the present work, the biocatalyzed synthesis of a series of aromatic-aliphatic polyesters based on the aliphatic diesters di-Me succinate, di-Me adipate and di-Me sebacate and the aromatic diols 2,5-bis(hydroxymethyl)furan, 3,4-bis(hydroxymethyl)furan and 2,6-pyridinedimethanol were investigated. A similar series of polyesters based on the petroleum-based 1,3-benzenedimethanol, 1,4-benzenedimethanol and 1,4-benzenediethanol were also synthesized for comparison. Data show that the enzymic syntheses were successful starting from all diols, with the obtained polymers having isolated yields between 67 and over 90%, number average mol. weights between 3000 Da and 5000 Da and d.p. (DP) of 6-18 (based on the used aliphatic diesters and aromatic diols) when polymerized in di-Ph ether as solvent. Only using 3,4-bis(hydroxymethyl)furan as the diol led to shorter oligomers with isolated yields around 50% and DPs of 3-5. DSC and TGA thermal analyses show clear correlation between polymer crystallinity and aliphatic carbon chain length of the diester.

European Polymer Journal published new progress about 627-93-0. 627-93-0 belongs to esters-buliding-blocks, auxiliary class Ploymers, name is Dimethyl adipate, and the molecular formula is C8H14O4, Computed Properties of 627-93-0.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Wu, Kaiyun published the artcileOne-pot efficient preparation of microcapsules based on photopolymerization for self-healing coatings, Name: Trimethylolpropane triacrylate, the publication is Colloids and Surfaces, A: Physicochemical and Engineering Aspects (2022), 128660, database is CAplus.

Self-healing microcapsules are currently one of the most promising functional materials due to their excellent performance. The preparation of self-healing microcapsules via photopolymerization is quite attractive considering its efficiency and environmental-friendliness. However, the influence of the preparation process and shell-formation materials on the formation and the morphol. of microcapsule have not been systematically researched. This work combines photopolymerization technol. and solvent evaporation to prepare microcapsule, and comprehensively explores the influence of process conditions and shell-formation materials on the microcapsules. Two preparation processes, UV-SR (photopolymerization first and then solvent removal) and SR-UV (solvent removal first and then photopolymerization), have been employed to prepare microcapsules. The SR-UV method is more suitable for preparing microcapsules with high core content and spherical core-shell morphol. The particle size distribution of microcapsules is related to the shear strength during initial emulsion preparation, and the size of microcapsules can be effectively controlled. At the same time, the effect of the shell-formation materials is also systematically studied. The method is universal for the preparation of microcapsules based on com. UV-curable prepolymers, but the introduction of UV-curable monomers may lead to the transformation of microcapsules from core-shell structure to multi-core structure. Microcapsules can be uniformly dispersed in water-borne epoxy, and the coating based on microcapsules exhibits excellent self-healing properties.

Colloids and Surfaces, A: Physicochemical and Engineering Aspects published new progress about 15625-89-5. 15625-89-5 belongs to esters-buliding-blocks, auxiliary class Polymerization Reagents,Crosslinkers, name is Trimethylolpropane triacrylate, and the molecular formula is C8H10O2, Name: Trimethylolpropane triacrylate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Wei, Y.-B. published the artcileThe Amorphous Alloy-catalyzed Hydroconversion of Demineralized Shengli Coal Liquefaction Residue Under Microwave Irradiation, SDS of cas: 110-34-9, the publication is Energy Sources, Part A: Recovery, Utilization, and Environmental Effects (2013), 35(24), 2302-2309, database is CAplus.

Microwave-assisted hydroconversion of demineralized Shengli lignite liquefaction residue (DMSLLR) over Ni-B/SiO₂ in methanol was investigated under mild conditions. The results show that Ni-B/SiO₂ significantly catalyzed DMSLLR hydroconversion by increasing the methanol-extractable fraction of hydroconverted DMSLLR to 87.7% over Ni-B/SiO₂ from 62.3% without catalyst. The yields of alkanes, hydroarenes, alkyl arenes, non-substituted arenes, organooxygen compounds, and organosulfur compounds from catalytic hydroconversion of DMSLLR are drastically higher than those from non-catalytic hydroconversion of DMSLLR. Benzo[ghi]perylene is the most abundant condensed arenes detected.

Energy Sources, Part A: Recovery, Utilization, and Environmental Effects published new progress about 110-34-9. 110-34-9 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester, name is Isobutyl palmitate, and the molecular formula is C38H74Cl2N2O4, SDS of cas: 110-34-9.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Yang, Xingchuan published the artcileLiquid-Liquid Equilibrium Measurement and Correlation for the Ternary Systems (Dimethyl Succinate + 1,4-Butanediol)/(Dimethyl Glutarate + 1,5-Pentanediol)/(Dimethyl Adipate + 1,6-Hexanediol) + Water at Different Temperatures, Recommanded Product: Dimethyl adipate, the publication is Journal of Chemical & Engineering Data (2020), 65(4), 1875-1885, database is CAplus.

Liquid-liquid equilibrium (LLE) data for esters + diols + water ternary systems were measured at 101.3 kPa at four different temperatures, namely, 293.15, 303.15, 313.15, and 323.15 K. The Othmer-Tobias equation and the Hand equation were applied to examine the reliability of the LLE data in which both regression coefficients were higher than 0.98. The calculated distribution coefficients and separation factors were larger than 1, which means that it is feasible to extract the diols from the corresponding ester with water. In addition, NRTL and UNIQUAC models were applied to correlate the exptl. data, and the binary interaction parameters were obtained. The calculated root-mean-square deviation values show that both models are in good agreement with the exptl. data.

Journal of Chemical & Engineering Data published new progress about 627-93-0. 627-93-0 belongs to esters-buliding-blocks, auxiliary class Ploymers, name is Dimethyl adipate, and the molecular formula is C22H32O2, Recommanded Product: Dimethyl adipate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Chen, Jun-Hui published the artcileScreening and effect evaluation of chemical inducers for enhancing astaxanthin and lipid production in mixotrophic Chromochloris zofingiensis, Recommanded Product: Propyl 3,4,5-trihydroxybenzoate, the publication is Journal of Applied Phycology (2022), 34(1), 159-176, database is CAplus.

A two-stage screening approach of chem. inducers was carried out to evaluate the pos. effect on enhancing astaxanthin and lipid production in mixotrophic Chromochloris zofingiensis. The results demonstrated that oxidants were able to increase the astaxanthin content high up to 11.4 mg g^-1 biomass, while pyruvic acid promoted the cell growth and increased the contents of astaxanthin and lipids up to 10.7 mg g^-1 and 66.1% dry weight The highest yield (87.0 mg L^-1) and productivity (7.3 mg L^-1 day^-1) of astaxanthin were obtained in parallel with high lipid productivity (459.0 mg L^-1 day^-1). The correlations between the dosage effect of chem. inducers and metabolites variation were further examined by statistical analyzes. Addnl., C. zofingiensis-derived lipids were estimated to be more viable and feasible as edible oils based on fatty acid characteristics assessment. The present work highlights the effective screening strategy of chem. inducers for enhancing astaxanthin and lipid production and the potential application in mixotrophic C. zofingiensis.

Journal of Applied Phycology published new progress about 121-79-9. 121-79-9 belongs to esters-buliding-blocks, auxiliary class Natural product, name is Propyl 3,4,5-trihydroxybenzoate, and the molecular formula is C10H12O5, Recommanded Product: Propyl 3,4,5-trihydroxybenzoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics