Category: 19788-49-9

Huang, Hanchu published the artcileRadical Ring-Closing/Ring-Opening Cascade Polymerization, Application In Synthesis of 19788-49-9, the publication is Journal of the American Chemical Society (2019), 141(32), 12493-12497, database is CAplus and MEDLINE.

A novel strategy for the synthesis of main-chain polymers through radical ring-closing/ring-opening cascade polymerization is reported. Efficient radical cyclopolymn. was achieved through systematic optimization of the electronic properties of 1,6-diene structures. Fusing 1,6-diene with allylic sulfide or allylic sulfone motifs enabled a ring-closing/ring-opening cascade reaction that provides a strong driving force for the ring-opening polymerization of large macrocyclic monomers. The ability of 1,6-diene-fused allylic sulfone to undergo efficient SO₂ extrusion generated a propagating alkyl radical capable of reversible deactivation. This strategy provides a general platform for the synthesis of polymers incorporating complex main-chain structures and degradable functionalities.

Journal of the American Chemical Society published new progress about 19788-49-9. 19788-49-9 belongs to esters-buliding-blocks, auxiliary class Thiol,Aliphatic hydrocarbon chain,Ester, name is Ethyl 2-mercaptopropanoate, and the molecular formula is C5H10O2S, Application In Synthesis of 19788-49-9.

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

Xiao, Hua-Ming published the artcileSensitive analysis of multiple low-molecular-weight thiols in a single human cervical cancer cell by chemical derivatization-liquid chromatography-mass spectrometry, Related Products of esters-buliding-blocks, the publication is Analyst (Cambridge, United Kingdom) (2019), 144(22), 6578-6585, database is CAplus and MEDLINE.

Low-mol.-weight (LMW) thiols are important small mols. that regulate or maintain redox homeostasis in physiol. and pathol. processes. Assessing the concentrations of LMW thiols in biol. systems may provide valuable information regarding physiol. processes and the early diagnosis of some diseases. Here, we developed a method to simultaneously determine the concentrations of multiple LWM thiols in single cells by chem. derivatization assisted liquid chromatog.-mass spectrometry (LC-MS). In this method, we synthesized a pair of stable isotope reagents, N-(acridin-9-yl)-2-bromoacetamide (AYBA) and N-(1,2,3,4-[²H₄]-acridin-9-yl)-2-bromoacetamide ([²H₄]AYBA). AYBA was used to derivatize LWM thiols in human cervical cancer (HeLa) cells, while [²H₄]AYBA was used to derivatize standard LWM thiols to prepare internal standards for the LC-MS method development. The proposed AYBA derivatization greatly enhanced the detection sensitivity of LWM thiols by LC-MS, and thereby achieved the simultaneous detection of multiple LWM thiols by LC-MS in ∼1000 HeLa cells. Finally, the developed method was successfully utilized for the quant. anal. of multiple LWM thiols in a single HeLa cell and the content changes of LWM thiols in a single HeLa cell before and after oxidative stress treatment. Accordingly, six LMW thiols were detected, including cysteamine, cysteine, glutathione, homocysteine, hydrogen sulfide, and pantetheine.

Analyst (Cambridge, United Kingdom) published new progress about 19788-49-9. 19788-49-9 belongs to esters-buliding-blocks, auxiliary class Thiol,Aliphatic hydrocarbon chain,Ester, name is Ethyl 2-mercaptopropanoate, and the molecular formula is C18H12FN, Related Products of esters-buliding-blocks.

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

Perrier, Sebastien published the artcileMicrowave assisted RAFT polymerisation: A novel route towards the rapid preparation of polymers of controlled molecular weight, HPLC of Formula: 19788-49-9, the publication is Polymer Preprints (American Chemical Society, Division of Polymer Chemistry) (2005), 46(2), 291-292, database is CAplus.

Microwave heating was applied in the RAFT polymerization of Me acrylate and of styrene mediated by 2-(ethylthiosulfanylcarbonyl)propionic acid Et ester while employing dicumyl peroxide or AIBN as initiator. Microwave heating provided faster rates of polymerization for both monomers in bulk and in solution

Polymer Preprints (American Chemical Society, Division of Polymer Chemistry) published new progress about 19788-49-9. 19788-49-9 belongs to esters-buliding-blocks, auxiliary class Thiol,Aliphatic hydrocarbon chain,Ester, name is Ethyl 2-mercaptopropanoate, and the molecular formula is C5H10O2S, HPLC of Formula: 19788-49-9.

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

Tekeste, Teame published the artcileModeling Zinc Enzyme Inhibition with Functional Thiolate Ligands, Safety of Ethyl 2-mercaptopropanoate, the publication is Inorganic Chemistry (2006), 45(26), 10799-10806, database is CAplus and MEDLINE.

The blocking of zinc enzymes by thiolate-containing inhibitors was modeled by treating Tp^Ph,MeZn-OH with functional thiols. The latter were chosen such that they contain an addnl. donor function (COOH, COOR, NH₂, NHR, OH) in a position favorable for chelation. Of them, mercapto carboxylic acid esters were incorporated as thiolates. The corresponding mercapto carboxylic acids, however, used only their carboxylate function for coordination. Various mercapto amines, mercapto alcs., and mercaptophenol were exclusively converted to thiolate ligands. The two modes of inhibitor attachment, terminal or chelating, were observed equally frequently. As a rule, they occur as alternatives for similar ligands. In case of 2-mercaptophenol they coexist in the crystalline state and in solution Hydrogen bonding, both intra- and intermol., seems to be a decisive factor determining the inhibitor attachments. Its persistence in solution is underlined by the observation that Tp^Ph,MeZn-hydroxythiophenolates are methylated about 2 orders of magnitude slower than Tp^Ph,MeZn-SPh itself.

Inorganic Chemistry published new progress about 19788-49-9. 19788-49-9 belongs to esters-buliding-blocks, auxiliary class Thiol,Aliphatic hydrocarbon chain,Ester, name is Ethyl 2-mercaptopropanoate, and the molecular formula is C11H10O, Safety of Ethyl 2-mercaptopropanoate.

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

Picard, Magali published the artcileInvolvement of Dimethyl Sulfide and Several Polyfunctional Thiols in the Aromatic Expression of the Aging Bouquet of Red Bordeaux Wines, Related Products of esters-buliding-blocks, the publication is Journal of Agricultural and Food Chemistry (2015), 63(40), 8879-8889, database is CAplus and MEDLINE.

The development of an aromatic bouquet during fine wine aging depends on complex transformations occurring in a reductive atm., favorable to the formation and preservation of sulfur odorants, such as di-Me sulfide (DMS) and polyfunctional thiols. The aim of this study was to address their role in the occurrence, evolution, and perceived sensory nuances of the aging bouquet of red Bordeaux wines. These compounds were quantified in 24 wines and scored by a professional wine panel for the degree to which they reflected the aging bouquet olfactory concept. Partial least square (PLS) anal., combining sensory and quant. chem. data, predicted that DMS, 2-furanmethanethiol, and 3-sulfanylhexanol concentrations correlated with the typicality score, discriminating highly-typical wines from less-typical ones. Several vintages from three vineyards were then subjected to sensory and chem. anal. to determine how aging bouquet typicality and the intensity of five key aromatic notes (undergrowth, truffle, fresh fruit, toasted, and empyreumatic) evolved during bottle storage in relation to these three sulfur odorants. PCA anal. emphasized their combined impact on aging bouquet typicality and their contribution to undergrowth, truffle, and empyreumatic attributes.

Journal of Agricultural and Food Chemistry published new progress about 19788-49-9. 19788-49-9 belongs to esters-buliding-blocks, auxiliary class Thiol,Aliphatic hydrocarbon chain,Ester, name is Ethyl 2-mercaptopropanoate, and the molecular formula is C5H10O2S, Related Products of esters-buliding-blocks.

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

Perrier, Sebastien published the artcileProgress in RAFT/MADIX polymerization: synthesis, use, and recovery of chain transfer agents, Related Products of esters-buliding-blocks, the publication is ACS Symposium Series (2006), 438-454, database is CAplus.

We report the synthesis of novel chain transfer agents for RAFT/MADIX polymerization, and their use to mediate the polymerization of a variety of monomers, in order to produce a range of functional materials. After polymerization, the chain transfer agent is recovered in a one pot reaction, which also permits to introduce functional groups at the chain-end of the polymers.

ACS Symposium Series published new progress about 19788-49-9. 19788-49-9 belongs to esters-buliding-blocks, auxiliary class Thiol,Aliphatic hydrocarbon chain,Ester, name is Ethyl 2-mercaptopropanoate, and the molecular formula is C5H10O2S, Related Products of esters-buliding-blocks.

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

Parthasarathy, V. published the artcileMelt surface grafting of HDPE with mercaptoesters by thermolysis method, Name: Ethyl 2-mercaptopropanoate, the publication is Polymer Engineering & Science (2010), 50(3), 474-483, database is CAplus.

High-d. polyethylene (HDPE) was graft functionalized with 2 different mercapto esters in an inert atm. at 160°C under different exptl. conditions by thermolysis method. The order of functionalization, crosslinking, and C=C formation reactions were determined from the relative intensities of carbonyl stretching vibration and C-H bending vibrations. FTIR, DSC, and TGA anal. tools were used to characterize mercapto ester-functionalized HDPE. A plausible reaction mechanism is proposed here to explain the exptl. results obtained. POLYM. ENG. SCI., 2010. © 2009 Society of Plastics Engineers.

Polymer Engineering & Science published new progress about 19788-49-9. 19788-49-9 belongs to esters-buliding-blocks, auxiliary class Thiol,Aliphatic hydrocarbon chain,Ester, name is Ethyl 2-mercaptopropanoate, and the molecular formula is C5H10O2S, Name: Ethyl 2-mercaptopropanoate.

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

Huang, Hanchu published the artcileRadical Cascade-Triggered Controlled Ring-Opening Polymerization of Macrocyclic Monomers, Product Details of C5H10O2S, the publication is Journal of the American Chemical Society (2018), 140(33), 10402-10406, database is CAplus and MEDLINE.

A strategy for the controlled radical ring-opening polymerization of macrocyclic monomers is reported. Key to this approach is an allyl alkylsulfone-based ring-opening trigger that can undergo a radical cascade reaction to extrude sulfur dioxide and generate an alkyl radical for controlled chain propagation. A systematic study correlating reaction conditions with polymer mol. weight and mol. weight distribution allowed excellent control over polymerization The versatility of this radical cascade-triggered ring-opening polymerization approach was further demonstrated through the first radical block copolymerization of macrocyclic monomers, and the incorporation of degradable functionality into the polymer backbone.

Journal of the American Chemical Society published new progress about 19788-49-9. 19788-49-9 belongs to esters-buliding-blocks, auxiliary class Thiol,Aliphatic hydrocarbon chain,Ester, name is Ethyl 2-mercaptopropanoate, and the molecular formula is C5H10O2S, Product Details of C5H10O2S.

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

Ma’Radzi, Akmal Hadi published the artcileSynthesis of polyvinyl alcohol stereoblock copolymer via the combination of living cationic polymerization and RAFT/MADIX polymerization using xanthate with vinyl ether moiety, Application of Ethyl 2-mercaptopropanoate, the publication is Polymer (2014), 55(21), 5332-5345, database is CAplus.

Different types of novel xanthates containing a vinyl ether moiety, S-benzyl O-2-(vinyloxy)ethyl carbonodithioate (Xanthate 1) and S-1-(ethoxycarbonyl)ethyl O-2-(vinyloxy)ethyl carbonodithioate (Xanthate 2) were synthesized. In particular, the Xanthate 2 enabled the design of polyvinyl alc. (PVA) stereoblock copolymer via the combination of living cationic vinyl polymerization and RAFT/MADIX polymerization For cationic polymerization of iso-Bu vinyl ether (IBVE) and tert-Bu vinyl ether (TBVE), the polymerizations were conducted under Xanthate 1-HCl adduct/SnCl₄ and Xanthate 1 or 2-CF₃COOH adduct/EtAlCl₂ initiating system in the presence of Et acetate. Both systems proceeded in living polymerization fashion because the calculated M_n of both poly(IBVE) and poly(TBVE) matches with the M_n polymerized assuming that one polymer chain is formed per one mol. of the Xanthate 1 or 2. The resulting poly(TBVE) had a high number average α-end functionality as determined by MALDI-TOF-MS spectrometry. Xanthate 2 is more efficient for the following RAFT/MADIX polymerization of vinyl acetate (VAc). The RAFT/MADIX polymerization of vinyl acetate (VAc) using azobis(isobutyronitrile) (AIBN) at 60 °C was conducted using either poly(IBVE) or poly(TBVE) macro-CTA. The poly(TBVE) macro-CTAs synthesized from the Xanthate 2 were able to polymerize VAc smoothly via RAFT/MADIX polymerization, to prepare well-defined diblock copolymer, poly(TBVE)-b-poly(VAc). The resulting block copolymer was then hydrolyzed using KOH in methanol and followed by acid hydrolysis using HBr gas bubbling. The resulting polymer is and inherently stereoblock-like copolymer, isotactic rich PVA-b-atactic PVA (iPVA-b-aPVA). From the DSC measurement, the iPVA-b-aPVA has one glass transition at 69.5 °C and two m.ps. according to iPVA and aPVA at 237.9 and 198.1 °C, resp. Thus, it can be suggested that the obtained PVA has two different geometries by the combination of living cationic polymerization and RAFT/MADIX polymerization

Polymer published new progress about 19788-49-9. 19788-49-9 belongs to esters-buliding-blocks, auxiliary class Thiol,Aliphatic hydrocarbon chain,Ester, name is Ethyl 2-mercaptopropanoate, and the molecular formula is C5H10O2S, Application of Ethyl 2-mercaptopropanoate.

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

Lee, Jaemin published the artcileGenotypic variation of volatile compounds from flowers of gentians, Computed Properties of 19788-49-9, the publication is Breeding Science (2010), 60(1), 9-17, database is CAplus.

Gentians (Gentiana triflora, G. scabra) are one of the most important ornamental plants, however, repellent odor emitted from their flowers makes them undesirable in indoor floral utilization. It is necessary to understand the component of their flower scent for breeding of new cultivars without repellent odor. Floral scent compounds of gentians were analyzed by the method of Head Space-Solid Phase Micro Extraction with GC-MS (HS-SPME/GC-MS). The level of scent emission from gentian flowers increased with the age of the flower and reached a maximum at three days after anthesis and decreased thereafter. Their flowers emitted volatiles throughout the day, and the amounts were higher at night than during the day. A total of 98 compounds were detected in 13 genotypes examined, and quant. and qual. variations were found. Of these compounds, several kinds of lilac aldehydes (terpenoids) were only detected in G. scabra. The results of principal component anal. showed that cultivars/lines classified in the same species were grouped with each other. Of the 13 genotypes, Ashiro-no-Natsu emitted the most abundant volatiles and has strong unpleasant odor. 2-Methylbutanoic acid is considered to be one of the major constituents responsible for the unpleasant odor of gentians.

Breeding Science published new progress about 19788-49-9. 19788-49-9 belongs to esters-buliding-blocks, auxiliary class Thiol,Aliphatic hydrocarbon chain,Ester, name is Ethyl 2-mercaptopropanoate, and the molecular formula is C5H10O2S, Computed Properties of 19788-49-9.

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