Esters-buliding-blocks

Ochiai, Shiho published the artcileSynthesis of Benzylidenesuccinates through Rhodium(III)-Catalyzed C-H Alkenylation with Itaconate, Quality Control of 617-52-7, the publication is Asian Journal of Organic Chemistry (2022), 11(2), e202100774, database is CAplus.

The dehydrogenative coupling of aromatic amides, e.g., (1-methyl-1H-indol-2-yl)-1-pyrrolidinylmethanone with di-Me itaconate proceeds smoothly under rhodium catalysis through ortho C-H bond cleavage directed by their amide group to produce benzylidenesuccinates, e.g., I. Aromatic carboxylic acids, e.g., 2-thiophenecarboxylic acid including benzoic and phthalic acids also couple with the itaconate to give 1 : 2 coupling products, e.g., II predominantly. Benzylidenesuccinic acid derivatives have been known to show various biol. activities. These reactions provide easy access to the important structures.

Asian Journal of Organic Chemistry 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, Quality Control of 617-52-7.

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

Kodama, Susumu published the artcileAssociation between in vitro nuclear receptor-activating profiles of chemical compounds and their in vivo hepatotoxicity in rats, SDS of cas: 517-23-7, the publication is Journal of Toxicological Sciences (2021), 46(12), 569-587, database is CAplus.

The liver plays critical roles to maintain homeostasis of living organisms and is also a major target organ of chem. toxicity. Meanwhile, nuclear receptors (NRs) are known to regulate major liver functions and also as a critical target for hepatotoxic compounds In this study, we established mammalian one-hybrid assay systems for five rat-derived NRs, namely PXR, PPARα, LXRα, FXR and RXRα, and evaluated a total of 326 compounds for their NR-activating profiles. Then, we assessed the association between their NR-activating profile and hepatotoxic endpoints in repeated-dose toxicity data of male rats from Hazard Evaluation Support System. In the in vitro cell-based assays, 68, 38, 20, 17 and 17 compounds were identified as positives for PXR, PPARα, LXRα, FXR and RXRα, resp. The association analyses demonstrated that the PXR-pos. compounds showed high frequency of endpoints related to liver hypertrophy, such as centrilobular hepatocellular hypertrophy, suggesting that PXR activation is involved in chem.-induced liver hypertrophy in rats. It is intriguing to note that the PXR-pos. compounds also showed statistically significant associations with both prolonged activated partial thromboplastin time and prolonged prothrombin time, suggesting a possible involvement of PXR in the regulation of blood clotting factors. Collectively, our approach may be useful for discovering new functions of NRs as well as understanding the complex mechanism for hepatotoxicity caused by chem. compounds

Journal of Toxicological Sciences published new progress about 517-23-7. 517-23-7 belongs to esters-buliding-blocks, auxiliary class Tetrahydrofuran,Ketone,Ester, name is 3-Acetyldihydrofuran-2(3H)-one, and the molecular formula is C6H8O3, SDS of cas: 517-23-7.

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

Nagasawa, Kinzo published the artcileSeparation and detection of carbamates and related compounds on polyamide layers, HPLC of Formula: 3052-61-7, the publication is Journal of Chromatography (1970), 52(3), 453-9, database is CAplus and MEDLINE.

The separation and detection of 22 carbamates and related compounds including insecticidal or herbicidal materials in current use, were investigated on polyamide layers. Suitable solvent systems and the Rf data are reported. A new spray reagent, pinacryptol yellow, was examined for the detection of these compounds and its usability was acertained. A comparison was also made between detection limits by uv absorption on polyamide and silica gel layers, and the superiority of the polyamide layers was confirmed.

Journal of Chromatography 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, HPLC of Formula: 3052-61-7.

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

Otsu, Takayuki published the artcileA model for living radical polymerization, Synthetic Route of 3052-61-7, the publication is Makromolekulare Chemie, Rapid Communications (1982), 3(2), 133-40, database is CAplus.

The polymerization of Me methacrylate  [80-62-6] takes place by living radical homogeneous solution polymerization in the presence of PhN:NCPh₃  [981-18-0] (thermal iniferter) or Et₂NCS₂CH₂Ph [3052-61-7] (photoiniferter). The functionally terminated poly(Me methacrylate) obtained with these iniferters was capable of further polymerization with added monomer.

Makromolekulare Chemie, Rapid Communications 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

Otsu, Takayuki published the artcileLiving radical polymerizations in homogeneous solution by using organic sulfides as photoiniferters, Related Products of esters-buliding-blocks, the publication is Polymer Bulletin (Berlin, Germany) (1982), 7(1), 45-50, database is CAplus.

Polystyrene was prepared by living radical polymerization in homogeneous solution using 4 organic sulfide initiator-transfer agent-terminators (photoiniferters). styrene  [100-42-5] Photopolymd, with diphenyl disulfide (I) [882-33-7], tetraethylthiuram disulfide  [97-77-8], benzyl diethyldithiocarbamate  [3052-61-7] and 2-phenylethyl diethyldithiocarbamate  [3052-60-6] gave polymers with yields and average-mol. weights increased as a function of the reaction time. These polymerizations proceeded via a living radical mechanism. When these photoiniferters except I were used, the propagating polymer chain end was always the Et₂NCSS group, which can further photodissoc. into a reactive propagating radical and a less reactive small radical Et₂NCSS· in order to result in successive insertion of monomer mols. into the dissociated bond.

Polymer Bulletin (Berlin, Germany) 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, Related Products of esters-buliding-blocks.

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

Yoon, Dong Ki published the artcileLiquid-crystal periodic zigzags from geometrical and surface-anchoring-induced confinement: Origin and internal structure from mesoscopic scale to molecular level, SDS of cas: 50670-76-3, the publication is Physical Review E: Statistical, Nonlinear, and Soft Matter Physics (2010), 82(4-1), 041705/1-041705/6, database is CAplus and MEDLINE.

We figured out periodic undulations of lamellae “zigzags” in liquid crystals under confinement by glass and patterned silicon hybrid cell, but in the absence of applied fields. The optical and internal structures of zigzags have been investigated from mesoscopic scale to mol. level by convoluting real and reciprocal space probes, such as polarized light microscopy, SEM, and microbeam x-ray diffraction. The homeotropic anchoring happens at air/liquid crystal, while planar one appears at glass or patterned silicon surfaces. The wetting and displacement of lamellae near the glass surface give rise to tilting and bending in the stacking of lamellae. This can provide a solution for the origin of periodic zigzags: asym. strain exerted to lamellae at two-dimensional glass surface and one-dimensional-like pattern. This can give a hint for potential photonic applications such as optical gratings and modulators due to its high periodicity.

Physical Review E: Statistical, Nonlinear, and Soft Matter Physics published new progress about 50670-76-3. 50670-76-3 belongs to esters-buliding-blocks, auxiliary class Benzene,Phenol,Ester, name is Ethyl 4′-hydroxy-[1,1′-biphenyl]-4-carboxylate, and the molecular formula is C15H24S, SDS of cas: 50670-76-3.

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

Kim, Yun Ho published the artcileEnergy transfer in a π-conjugated liquid crystalline molecule with two chromophores of rigid biphenyl core and pyrene head moieties, HPLC of Formula: 50670-76-3, the publication is Journal of Nanoscience and Nanotechnology (2009), 9(12), 6968-6973, database is CAplus and MEDLINE.

We investigate the energy transfer of a highly ordered π-conjugated liquid crystalline mol. containing two chromophores of biphenyl and pyrene moiety, in which the mol. was prepared by esterification of fluorinated biphenyl compound and 1-pyrenebutanol. DSC, POM and XRD results show that this mol. forms a highly ordered smectic liquid crystalline mesophase, in which the π-conjugated mol. was strongly packed together over large-areas. We show that the liquid crystalline bi-chromophoric systems with highly ordered structure exhibit the energy hopping and transfer to the chromophore with the energetically lowest S₁ state. From the single-mol. spectroscopy of the biphenyl and pyrene chromophore in solution, we show an intramol. energy transfer from biphenyl to pyrene moieties. In solid thin film, highly ordered structure of the liquid crystal plays a significant role in the formation of the excimer and perfect energy transfer between the chromophores.

Journal of Nanoscience and Nanotechnology published new progress about 50670-76-3. 50670-76-3 belongs to esters-buliding-blocks, auxiliary class Benzene,Phenol,Ester, name is Ethyl 4′-hydroxy-[1,1′-biphenyl]-4-carboxylate, and the molecular formula is C15H14O3, HPLC of Formula: 50670-76-3.

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

Kim, Yun Ho published the artcileSelf-assembled periodic liquid crystal defects array for soft lithographic template, Computed Properties of 50670-76-3, the publication is Soft Matter (2010), 6(7), 1426-1431, database is CAplus.

We have developed highly periodic patterns with sub-micrometer features over large-areas using toric focal conic domains (TFCDs) originated from smectic liquid crystal (LC) as a new self-assembling building block. TFCDs are accomplished by precisely controlling the surface and interfacial properties of smectic LC. In order to apply the smectic liquid crystal defect arrays in soft lithog., the hexagonal arrays of domain patterns are used as molds for UV curable polymers, thereby providing LC defect stamps with high spatial resolution over large areas. Our method was further utilized to transfer patterns with sub-micrometer features from the polymer stamp surface to a secondary surface by microcontact printing (μ-CP). Accordingly, we show that such LC materials can be very strong candidates for the periodic templates, compared to other soft-building blocks such as block copolymers, colloids and surfactants. We anticipate our finding be a starting point for more sophisticated lithog. applications based on liquid crystalline materials.

Soft Matter published new progress about 50670-76-3. 50670-76-3 belongs to esters-buliding-blocks, auxiliary class Benzene,Phenol,Ester, name is Ethyl 4′-hydroxy-[1,1′-biphenyl]-4-carboxylate, and the molecular formula is C15H14O3, Computed Properties of 50670-76-3.

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

Kim, Yun Ho published the artcileFabrication of a Superhydrophobic Surface from a Smectic Liquid-Crystal Defect Array, Category: esters-buliding-blocks, the publication is Advanced Functional Materials (2009), 19(18), 3008-3013, database is CAplus.

A novel fabrication method is developed for the preparation of superhydrophobic surfaces. The procedure uses focal conic structures of semi-fluorinated smectic liquid crystals (LCs) whose periodic toric focal conic domains (TFCDs) are prepared on a surface modified substrate. Reactive ion etching (RIE) on the periodic TFCD surface leads to a superhydrophobic surface with a water contact angle of ∼160° and a sliding angle of ∼2° for a 10 μL water droplet. The results show that this phenomenon is due to the development of a dual-scale surface roughness arising from the nanoscale protuberance caused by applying the RIE process to the top of the microscale TFCD arrays. The unique surface behavior is further verified by demonstrating that RIE on a flat lamellar liquid crystal film, in which the director is aligned parallel with surface, results in a relatively low hydrophobicity as compared to when periodic TFCDs are subjected to REI. The observations made in this publication suggest that a new approach exists for selecting potential candidates of superhydrophic surface formation based on spontaneous self-assembly in smectic liquid-crystalline materials.

Advanced Functional Materials published new progress about 50670-76-3. 50670-76-3 belongs to esters-buliding-blocks, auxiliary class Benzene,Phenol,Ester, name is Ethyl 4′-hydroxy-[1,1′-biphenyl]-4-carboxylate, and the molecular formula is C15H14O3, Category: esters-buliding-blocks.

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

Jung, Woo-Ok published the artcileRegio- and Enantioselective Iridium-Catalyzed Amination of Alkyl-Substituted Allylic Acetates with Secondary Amines, COA of Formula: C22H38N4O8, the publication is Organic Letters (2022), 24(1), 441-445, database is CAplus and MEDLINE.

Robust air-stable cyclometalated π-allyliridium C,O-benzoates modified by (S)-tol-BINAP catalyze the reaction of secondary aliphatic amines with racemic alkyl-substituted allylic acetates to furnish products of allylic amination with high levels of enantioselectivity. Complete branched regioselectivities were observed despite the formation of more highly substituted C-N bonds.

Organic Letters published new progress about 1523571-10-9. 1523571-10-9 belongs to esters-buliding-blocks, auxiliary class Azetidine,Salt,Spiro,Amide, name is tert-Butyl 1,6-diazaspiro[3.3]heptane-1-carboxylate oxalate(2:1), and the molecular formula is C22H38N4O8, COA of Formula: C22H38N4O8.

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