Tag: 100-200

On March 5, 2021, Minoshima, Mai; Uchida, Keisuke; Nakamura, Yu; Hosoya, Takamitsu; Yoshida, Suguru published an article.Computed Properties of 85-91-6 The title of the article was Acylalkylation of Arynes Generated from o-Iodoaryl Triflates with Hydrosilanes and Cesium Fluoride. And the article contained the following:

An efficient method to generate aryne intermediates from o-iodoaryl triflates triggered by triethylsilane and cesium fluoride is disclosed. This method realized the acylalkylation of arynes using easily available o-iodoaryl triflate-type precursors, which was difficult when using conventional nucleophilic activators. A wide range of (hetero)arenes including various fused benzothiazoles were successfully synthesized from o-iodoaryl triflates by virtue of their good accessibility and divergent transformations of aryne intermediates. The experimental process involved the reaction of Methyl N-Methylanthranilate(cas: 85-91-6).Computed Properties of 85-91-6

The Article related to iodoaryl triflate dicarbonyl compound acylalkylation cesium fluoride hydrosilane and other aspects.Computed Properties of 85-91-6

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

On October 31, 2018, Durak, Halil; Genel, Yasar published an article.Quality Control of 3-Acetyldihydrofuran-2(3H)-one The title of the article was Hydrothermal conversion of biomass (Xanthium strumarium) to energetic materials and comparison with other thermochemical methods. And the article contained the following:

In the present study, the biomass was converted into liquid and solid residues by using hydrothermal liquefaction method at 250, 300 and 350°C with (FeCl3, NaOH) and without catalyst. The resultant products were examined using GC-MS, FT-IR, 1H NMR, SEM, and elemental anal. methods. According to the performed analyses, the highest liquid product yield (total bio-oil) was found to be 38.08% at 300°C by using FeCl3 as catalyst. In the experiments carried out at 350°C, the highest HHV value was found to be 32.35 MJ kg-1 by using NaOH catalyst. The energy values of products obtained at the end of experiments were compared to the values obtained from pyrolysis and supercritical liquefaction method, and it was determined that the liquid products having higher level of energy value were achieved by using hydrothermal liquefaction method. The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).Quality Control of 3-Acetyldihydrofuran-2(3H)-one

The Article related to xanthium strumarium hydrothermal conversion process subcritical liquefaction, biofuels, biofuels (bio-oil), biomass, biomass pyrolysis fuel oils, charcoal role: spn (synthetic preparation), prep (preparation) (biochar), liquefaction, thermochemical liquefaction, xanthium strumarium and other aspects.Quality Control of 3-Acetyldihydrofuran-2(3H)-one

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

On December 31, 2017, Tzanetis, Konstantinos F.; Posada, John A.; Ramirez, Andrea published an article.Application In Synthesis of (Trimethoxymethyl)benzene The title of the article was Analysis of biomass hydrothermal liquefaction and biocrude-oil upgrading for renewable jet fuel production: The impact of reaction conditions on production costs and GHG emissions performance. And the article contained the following:

This paper shows a detailed anal. of a biomass HTL process by considering changes in three main reaction variables (i.e. catalysts (water, Na2CO3(aqueous), and Fe(aqueous)), temperature (280-340°C), and catalysts/biomass mass ratio (0-0.33 kg catalysts/kg biomass)), and by assessing their influence on the techno-economic and GHG emissions performance. This anal. is based on Aspen Plus simulations, process economics and life-cycle GHG assessment on SimaPro (using Ecoinvent 2.2). Results showed that the lowest production cost for biocrude oil is achieved when HTL is performed at 340°C with Fe as catalyst (450 euro/tbiocrude-oil or 13.6 euro/GJbiocrude-oil). At these conditions, the biocrude oil produced has an oxygen content of 16.6 wt% and a LHV of 33.1 MJ/kgbiocrude-oil. When the hydrotreatment and hydrogen generation units are included, the total production costs was 1040 euro/tupgraded-oil or 0.8 euro/Lupgraded-oil. After fractionation, the estimated production cost was 1086 euro/tbiojet-fuel or 25.1 euro/GJbiojet-fuel. This value is twice the com. price of fossil jet fuel. However, the allocated life cycle GHG emissions for renewable jet fuel were estimated at 13.1 kgCO2-eq./GJbiojet-fuel, representing only 15% the GHG emission of fossil jet fuel and therefore, indicating a significant potential on GHG emission reduction The experimental process involved the reaction of (Trimethoxymethyl)benzene(cas: 707-07-3).Application In Synthesis of (Trimethoxymethyl)benzene

The Article related to renewable jet fuel ghg biocrude oil biomass hydrothermal liquefaction, Electrochemical, Radiational, and Thermal Energy Technology: Energy Sources and other aspects.Application In Synthesis of (Trimethoxymethyl)benzene

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

Zhang, Ze; Tan, Zi-Bin; Hong, Chun-Yan; Wu, De-Cheng; You, Ye-Zi published an article in 2016, the title of the article was One-pot sequential multicomponent reaction and a multicomponent polymerization method for the synthesis of topologically different polymers.Application In Synthesis of 3-Aminodihydrothiophen-2(3H)-one hydrochloride And the article contains the following content:

Reactions combining two or more multicomponent reactions performed sequentially in a single pot have attracted great interest due to the fact that they enable more step- and time economic conversions of simple starting materials into complex targets. However, so far, no such reaction has been applied in the synthesis of topol. different polymers. Here, we first report a novel strategy combining the sequential multicomponent reaction (MCR) of a primary amine, a thiolactone and an alkene and the multicomponent polymerization (MCP) of an azide, an alkyne and a secondary amine in one-pot for the syntheses of topol. different polymers (linear, hyperbranched, core-shell polymers). This strategy provides an effective method that can control the sequence and topol. of the obtained polymers simultaneously. The experimental process involved the reaction of 3-Aminodihydrothiophen-2(3H)-one hydrochloride(cas: 6038-19-3).Application In Synthesis of 3-Aminodihydrothiophen-2(3H)-one hydrochloride

The Article related to amine thiolactone alkene multicomponent reaction azide multicomponent polymerization topol, Chemistry of Synthetic High Polymers: Ring-Opening and Other Polymerizations and other aspects.Application In Synthesis of 3-Aminodihydrothiophen-2(3H)-one hydrochloride

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

On January 15, 2022, Yan, Junjie; Wang, Xinyu; Xiong, Jianjun; Wang, Lizhen; Pan, Donghui; Xu, Yuping; Yang, Min published an article.Application of 6038-19-3 The title of the article was Uncovering divergent fluorescence of aliphatic polyamides: Synthesis, dual polymerization-induced emissions, and organelle-specific imaging. And the article contained the following:

Amides, essential structural units to construct aliphatic polyamides, peptides and proteins, have been lately demonstrated with non-traditional intrinsic luminescence (NTIL). However, diversified compositions, structures and environments in current research render aliphatic polyamides with significant divergences in NTILs and obfuscate the fluorescent nature. Herein, we construct a library of aliphatic polyamides by thiolactone chem. This versatile approach equips the resultant polyamides with tunable amide category, amide distribution, and chem. environment, facilitating to uncover the structure-NTILs relationship of aliphatic fluorescent polyamides. Unexpectedly, aliphatic polyamides possess dual polymerization-induced emissions (PIEs) due to different self or non-self hydrogen bonding interactions, which result in distinct fluorescence quenching effect upon various metal ions. Addnl., in-situ generated sulfhydryl can simplify the hetero-atom doping strategy and regulate the PIEs of aliphatic polyamides by modulating the intermol. forces among the system or with the environment. Furthermore, the introduction of a piperazine unit provides the resultant fluorescent polyamide with lysosome-specific anchoring, which lights up the organelle. These findings not only elucidate the origin of divergent fluorescence in aliphatic polyamides, but also afford fundamental basis to develop new kinds of aliphatic polymers with controllable fluorescence and functionality. The experimental process involved the reaction of 3-Aminodihydrothiophen-2(3H)-one hydrochloride(cas: 6038-19-3).Application of 6038-19-3

The Article related to aliphatic polyamide polymerization induced emission thiolactone chem fluorescence, Chemistry of Synthetic High Polymers: Ring-Opening and Other Polymerizations and other aspects.Application of 6038-19-3

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

Dong, Xiang; Robinson, Jerome R. published an article in 2020, the title of the article was The role of neutral donor ligands in the isoselective ring-opening polymerization of rac-β-butyrolactone.HPLC of Formula: 3976-69-0 And the article contains the following content:

Isoenriched poly-3-hydroxybutyrate (P3HB) is a biodegradable material with properties similar to isotactic polypropylene, yet efficient routes to this material are lacking after 50+ years of extensive efforts in catalyst design. In this contribution, a novel lanthanum aminobisphenolate catalyst (1-La) can access isoenriched P3HB through the stereospecific ring-opening polymerization (ROP) of rac-β-butyrolactone (rac-BBL). Replacing the tethered donor group of a privileged supporting ligand with a non-coordinating benzyl substituent generates a catalyst whose reactivity and selectivity can be tuned with inexpensive achiral neutral donor ligands (e.g. phosphine oxides, OPR3). The 1-La/OPR3 (R = n-octyl, Ph) systems display high activity and are the most isoselective homogeneous catalysts for the ROP of rac-BBL to date (0°C: Pm = 0.8, TOF ~190 h-1). Combined reactivity and spectroscopic studies provide insight into the active catalyst structure and ROP mechanism. Both 1-La(TPPO)2 and a structurally related catalyst with a tethered donor group (2-Y) operate under chain-end stereocontrol; however, 2-RE favors formation of P3HB with opposite tacticity (syndioenriched) and its ROP activity and selectivity are totally unaffected by added neutral donor ligands. Our studies uncover new roles for neutral donor ligands in stereospecific ROP, including suppression of chain-scission events, and point to new opportunities for catalyst design. The experimental process involved the reaction of (R)-Methyl 3-hydroxybutanoate(cas: 3976-69-0).HPLC of Formula: 3976-69-0

The Article related to butyrolactone ring opening polymerization lanthanum aminobisphenolate catalyst, Chemistry of Synthetic High Polymers: Ring-Opening and Other Polymerizations and other aspects.HPLC of Formula: 3976-69-0

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

On July 31, 2018, Paenkaew, Sujittra; Rutnakornpituk, Metha published an article.SDS of cas: 6038-19-3 The title of the article was Effect of alkyl chain lengths on the assemblies of magnetic nanoparticles coated with multi-functional thiolactone-containing copolymer. And the article contained the following:

This work presents the synthesis of magnetite nanoparticle (MNP) coated with poly(N,N-diethylaminoethyl methacrylate)-b-poly(N-iso-Pr acrylamide-st-thiolactone acrylamide) [PDEAEMA-b-P(NIPAAm-st-TlaAm)] copolymer and its use in controlled drug release and bio-conjugation. TlaAm units in the copolymer were ring-opened with various alkyl amines to form thiol groups (-SH), followed by thiol-ene coupling reactions with acrylamide-coated MNP and then quaternized to obtain cationic copolymer-MNP assemblies (the size < 200 nm/cluster). The use of alkyl amines having various chain lengths (e.g., 1-propylamine, 1-octylamine, or 1-dodecylamine) in the nucleophilic ring-opening reactions of the thiolactone rings affected their magnetic separation ability, water dispersibility, and release rate of doxorubicin model drug. In all cases, when increasing the temperature, they showed a thermo-responsive behavior as indicated by the decrease in hydrodynamic size and the accelerated drug release rate. These copolymer-MNP assemblies could be used as a novel platform with thermal-triggering controlled drug release and capability for adsorption with any neg. charged biomols. The experimental process involved the reaction of 3-Aminodihydrothiophen-2(3H)-one hydrochloride(cas: 6038-19-3).SDS of cas: 6038-19-3

The Article related to magnetite nanoparticle coating diblock copolymer controlled drug release, Plastics Manufacture and Processing: Formulating Procedures and Compositions and other aspects.SDS of cas: 6038-19-3

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

Mertens, Chiel; Aksakal, Resat; Badi, Nezha; Du Prez, Filip E. published an article in 2021, the title of the article was Sequence-defined oligoampholytes using hydrolytically stable vinyl sulfonamides: design and UCST behavior.Related Products of 6038-19-3 And the article contains the following content:

Polyampholytes, widely investigated for their distinct properties, are typically prepared via conventional polymerization techniques. This results in an ensemble of polymer chains with variation in mol. parameters such as length, ratio of charged groups and monomer order, which could influence their behavior. Here, uniform oligoampholytes with precisely positioned neg. charged carboxylate and pos. charged ammonium side-chains were synthesized using an iterative solid-phase synthesis strategy based on thiolactone chem. The amine side-chains were initially introduced via an acrylate, resulting in an amino-functionalized β-thioester that was shown to be susceptible to transesterification and hydrolysis, even under ambient conditions. While increasing the spacer length between the β-thioester and amine functionality could slow down this undesired side-reaction, it could not be completely suppressed. On the other hand, a tertiary amine-bearing vinyl sulfonamide proved to be a viable, hydrolytically stable alternative to introduce this moiety. The resulting uniform oligoampholytes are soluble in water and show UCST-type thermo responsive behavior in 85 vol% isopropanol/water mixtures The experimental process involved the reaction of 3-Aminodihydrothiophen-2(3H)-one hydrochloride(cas: 6038-19-3).Related Products of 6038-19-3

The Article related to hydrolytically stable vinyl sulfonamide sequence defined oligo ampholyte, Chemistry of Synthetic High Polymers: Ring-Opening and Other Polymerizations and other aspects.Related Products of 6038-19-3

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

On June 30, 2020, Paenkaew, Sujittra; Kajornprai, Todsapol; Rutnakornpituk, Metha published an article.SDS of cas: 6038-19-3 The title of the article was Water dispersible magnetite nanocluster coated with thermo-responsive thiolactone-containing copolymer. And the article contained the following:

This work focused on surface modification of magnetite nanoparticle (MNP) with poly(poly(ethylene glycol) monomethyl ether methacylate)-b-(poly(N-isopropylacrylamide)-st-poly(thiolactone acrylamide)), PPEGMA-b-(PNIPAAm-st-PTlaAm), diblock copolymer, synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization to obtain the particles having good water dispersible PPEGMA brushes, thermo-responsive PNIPAAm, and reactive thiolactone groups of PTlaAm. The thiolactone moiety in the copolymer can readily react with amino groups grafted on MNP surface and essentially induced the formation of MNP nanocluster. According to transmission electron microscopy (TEM), the size of the nanocluster ranged between 200 and 500 nm per cluster with 8 to 10 nm in diameter for each particle. Hydrodynamic diameter of the nanocluster significantly decreased as the dispersion temperature increased from 25° C to 45° C due to the shrinkage of thermo-responsive PNIPAAm when crossing its lower critical solution temperature (LCST). This stable nanocluster might be potentially used as a magnetic carrier for control release of entrapped entities with a thermally triggering mechanism. The experimental process involved the reaction of 3-Aminodihydrothiophen-2(3H)-one hydrochloride(cas: 6038-19-3).SDS of cas: 6038-19-3

The Article related to thiolactone copolymer coated magnetite nanocluster preparation property, Plastics Manufacture and Processing: Physical Properties and Testing Methods and other aspects.SDS of cas: 6038-19-3

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

Espeel, Pieter; Goethals, Fabienne; Driessen, Frank; Nguyen, Le-Thu T.; Du Prez, Filip E. published an article in 2013, the title of the article was One-pot, additive-free preparation of functionalized polyurethanes via amine-thiol-ene conjugation.COA of Formula: C4H8ClNOS And the article contains the following content:

A one-pot, isocyanate-free method for synthesis of functionalized polyurethanes based on amine-thiol-ene conjugation is presented. Aminolysis of a readily available AB’-urethane monomer, containing both an acrylate (A) and a thiolactone unit (B’), facilitates the preparation of various reactive thiol-acrylates. In situ polymerization via Michael addition proceeds under ambient conditions, yielding polyurethanes with a large variety of chem. functionalities. Side-chain functionality originates from the modular use of different amines, allowing for the introduction of pendent functional groups (e.g. double bond, triple bond, furfuryl, tertiary amine, morpholine) along the polyurethane backbone. Extensive model studies revealed the kinetic profile of this reaction sequence and excluded the occurrence of competing reactions, such as aza-Michael addition and disulfide formation. This mild one-pot reaction requires no additives or external trigger, and the obtained polyurethanes remain soluble throughout the process, enabling post-polymerization modification in the same reaction medium. The experimental process involved the reaction of 3-Aminodihydrothiophen-2(3H)-one hydrochloride(cas: 6038-19-3).COA of Formula: C4H8ClNOS

The Article related to amine thiol acrylate reaction isocyanate free polyurethane synthesis, Chemistry of Synthetic High Polymers: Ring-Opening and Other Polymerizations and other aspects.COA of Formula: C4H8ClNOS

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