Esters-buliding-blocks

Guo, Xingwei published the artcileManifestation of Polar Reaction Pathways of 2,3-Dichloro-5,6-dicyano-p-benzoquinone, Name: Ethyl 3-(dimethylamino)acrylate, the publication is Journal of the American Chemical Society (2013), 135(33), 12377-12387, database is CAplus and MEDLINE.

Reactions of 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ) with silyl enol ethers, silyl ketene acetals, allylsilanes, enamino esters, and diazomethanes have been studied in CH₃CN and CH₂Cl₂ solutions The second-order rate constants for C attack at DDQ (log k_C) correlate linearly with the nucleophile-specific parameters N and s_N and are 2-5 orders of magnitude larger than expected for SET processes, which strongly supports the polar mechanism for C-C bond formation. The second-order rate constants for O attack agree well with the calculated rate constants for rate-determining single electron transfer (SET). As a radical clock experiment ruled out outer sphere electron transfer, an inner sphere electron transfer mechanism is suggested for O attack.

Journal of the American Chemical Society published new progress about 924-99-2. 924-99-2 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Amine,Aliphatic hydrocarbon chain,Ester, name is Ethyl 3-(dimethylamino)acrylate, and the molecular formula is C7H13NO2, Name: Ethyl 3-(dimethylamino)acrylate.

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

Kappe, Thomas published the artcileA new modification of the Pechmann reaction, Synthetic Route of 924-99-2, the publication is Synthesis (1981), 524-6, database is CAplus.

Hydroxylated coumarin and quinolinone derivatives I (Z = O, NH, NMe; R = H, Me) reacted with β-oxo esters and NH₄OAc to yield the resp. fused pyrans II [R¹ = H, PhCH₂; R² = Me, H, Ph, CH₂CO₂Et; and R¹R² = (CH₂)₄]. I (Z = NH, R = H) was heated with MeCOCH₂CO₂Et and NH₄OAc at 185° to give II (Z = NH, R = R¹ = H, R² = Me). Some II were also prepared from I and 3-amino-2-alkenoate esters.

Synthesis published new progress about 924-99-2. 924-99-2 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Amine,Aliphatic hydrocarbon chain,Ester, name is Ethyl 3-(dimethylamino)acrylate, and the molecular formula is C7H13NO2, Synthetic Route of 924-99-2.

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

Chiefari, John published the artcileThiocarbonylthio Compounds (S:C(Z)S-R) in Free Radical Polymerization with Reversible Addition-Fragmentation Chain Transfer (RAFT Polymerization). Effect of the Activating Group Z, SDS of cas: 3052-61-7, the publication is Macromolecules (2003), 36(7), 2273-2283, database is CAplus.

Free-radical polymerization in the presence of suitable addition-fragmentation chain transfer agents [S:C(Z)S-R] (RAFT agents) possess the characteristics of a living polymerization (i.e., polymer products can be reactivated for chain extension and/or block synthesis, mol. weights are predetermined by RAFT agent concentration and conversion, narrow polydispersities are possible). Styrene polymerizations (110 °C, thermal initiation) were performed for two series of RAFT agents [S:C(Z)S-CH₂Ph and S:C(Z)S-C(Me)₂CN]. The chain transfer coefficients decrease in the series where Z is Ph > SCH₂Ph ∼ SMe ∼ Me ∼ N-pyrrolo ≫ OC₆F₅ > N-lactam > OC₆H₅ > O(alkyl) ≫ N(alkyl)₂ (only the first five in this series provide narrow polydispersity polystyrene (< 1.2) in batch polymerization). More generally, chain transfer coefficients decrease in the series dithiobenzoates > trithiocarbonates ∼ dithioalkanoates > dithiocarbonates (xanthates) > dithiocarbamates. However, electron-withdrawing substituents on Z can enhance the activity of RAFT agents to modify the above order. Thus, substituents that render the oxygen or nitrogen lone pair less available for delocalization with the C:S can substantially enhance the effectiveness of xanthates or dithiocarbamates, resp. The trend in relative effectiveness of the RAFT agents is rationalized in terms of interaction of Z with the C:S double bond to activate or deactivate that group toward free radical addition MO calculations and the estimated LUMO energies of the RAFT agents can be used in a qual. manner to predict the effect of the Z substituent on the activity of RAFT agents.

Macromolecules 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, SDS of cas: 3052-61-7.

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

Sern, Cheah Han published the artcileSynthesis of palmitic acid-based esters and their effect on the pour point of palm oil methyl esters, COA of Formula: C20H40O2, the publication is Journal of Oil Palm Research (2008), 542-547, database is CAplus.

The objectives of this research were to synthesis palmitic acid-based esters and to study their effects on the pour point of palm oil Me esters. Palmitic acid was esterified with six different branched-chain alcs., namely 2-propanol, 2-butanol, 2-ethyl-1-hexanol, 2-methyl-1-butanol, 2-methyl-1-propanol and 2,2-dimethylpropane-1,3-diol. The purified products were characterized by FT-IR, ¹H-NMR and ¹³C-NMR. The effect of the six synthesized palmitic acid-based esters on palm oil Me esters (biodiesel) was later evaluated. The compounds under study were iso-Pr palmitate (1), sec-Bu palmitate (2), 2-ethylhexyl palmitate (3), 2-methylbutyl palmitate (4), iso-Bu palmitate (5) and 2,2-dimethylpropane-1,3-diyl daipalmitate (6). All of the synthesized compounds were miscible in palm oil Me esters due to similar polarity of the solute and the biodiesel. The blends of the resultant six ester compounds in palm oil Me esters were evaluated resp. for their effect on pour point property. The 2,2-dimethylpropane-1,3-diyl dipalmitate was able to improve the pour point of palm oil Me esters from 12°C to 9°C when 5 wt % was added.

Journal of Oil Palm Research 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 C14H19NO8, COA of Formula: C20H40O2.

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

Marchyk, Nataliya published the artcileOne-pot synthesis of iniferter-bound polystyrene core nanoparticles for the controlled grafting of multilayer shells, HPLC of Formula: 3052-61-7, the publication is Nanoscale (2014), 6(5), 2872-2878, database is CAplus and MEDLINE.

A novel approach using one-pot synthesis for the production of uniform, iniferter-bound polystyrene core nanoparticles of size 30-40 nm is described. Conventional oil-in-water emulsion polymerization of styrene and divinylbenzene, combining a hybrid initiation system (thermal and UV), triggered sequentially, was employed to form the surface-bound thiocarbamate iniferters in situ. The iniferter cores were then used as seeds for re-initiating further polymerization by UV irradiation to produce water-compatible core-shell nanoparticles. Grafting of various shell-types is demonstrated: linear polymers of poly(N-isopropylacrylamide) brushes, crosslinked polymers bearing different surface charges and molecularly imprinted polymers. The shell thickness was readily tuned by varying the monomers’ concentration and polymerization time. Our method is straightforward and in addition, gives access to the preparation of fluorescent seeds and the possibility of grafting nanosized multiple shells. The core-shell nanoparticles were fully characterized by dynamic light scattering, transmission electron microscopy, Fourier transform IR spectroscopy and microelemental anal.

Nanoscale 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

Tandon, Vishnu K. published the artcileNaphtho[2,3-b][1,4]-thiazine-5,10-diones and 3-substituted-1,4-dioxo-1,4-dihydronaphthalen-2-yl-thioalkanoate derivatives: Synthesis and biological evaluation as potential antibacterial and antifungal agents, SDS of cas: 19788-49-9, the publication is Bioorganic & Medicinal Chemistry Letters (2006), 16(22), 5883-5887, database is CAplus and MEDLINE.

A series of 3-substituted-1,4-dioxo-1,4-dihydronaphthalen-2-yl-thio-alkanoate derivatives and naphtho[2,3-b][1,4]-thiazine-5,10-diones, e.g. I, were synthesized and evaluated for their antibacterial and antifungal activities. The structure-activity relationships of these compounds were studied and the results show that I exhibited better antibacterial activity than Gentamycin in vitro against Staphylococcus aureus. In addition I also imparted marked antifungal activity in vitro against Cryptococcus neoformans, Sporothrix schenckii, and Trichophyton mentagrophytes when compared with Fluconazole. Some other compounds also exhibited significant antibacterial activity in vitro against S. aureus.

Bioorganic & Medicinal Chemistry Letters 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 C4H6N2, SDS of cas: 19788-49-9.

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

Tandon, Vishnu K. published the artcile“On water” assisted synthesis and biological evaluation of nitrogen and sulfur containing hetero-1,4-naphthoquinones as potent antifungal and antibacterial agents, Recommanded Product: Ethyl 2-mercaptopropanoate, the publication is European Journal of Medicinal Chemistry (2010), 45(6), 2418-2426, database is CAplus and MEDLINE.

2-Chloro-3-(4-methylpiperazin-1-yl)naphthalene-1,4-dione, 2-chloro-3-(pyrrolidin-1-yl)naphthalene-1,4-dione, 2-chloro-3-(piperidin-1-yl)naphthalene-1,4-dione, 2-chloro-3-morpholinonaphthalene-1,4-dione, 2-chloro-3-(2-phenylhydrazinyl)naphthalene-1,4-dione, 2-(allylamino)-3-chloronaphthalene-1,4-dione, 2-(3-chloro-1,4-dioxo-1,4-dihydronaphthalen-2-ylthio)acetic acid, 2-(3-chloro-1,4-dioxo-1,4-dihydronaphthalen-2-ylthio)succinic acid, Me 2-(3-chloro-1,4-dioxo-1,4-dihydronaphthalen-2-ylthio)acetate, 2-chloro-3-(2-mercaptoethylthio)naphthalene-1,4-dione (I), 3-hydroxy-4-methyl-4H-naphtho[2,3-b][1,4]thiazine-5,10-dione, etc, have been synthesized by a green methodol. approach using water as solvent and evaluated for their antifungal and antibacterial activities. Several compounds, e.g., I, were found to have better antifungal activity than clin. prevalent antifungal drugs Fluconazole and Amphotericin-B against Trichophyton mentagrophytes and compounds

European Journal of Medicinal 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 C5H11NO2S, Recommanded Product: Ethyl 2-mercaptopropanoate.

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

Auvil, Tyler J. published the artcileInternal lewis acid assisted benzoic acid catalysis, Name: Methyl 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-4-(trifluoromethyl)benzoate, the publication is Synthesis (2012), 44(14), 2173-2180, database is CAplus.

Internal Lewis acid assisted benzoic acid derivatives are introduced as new low-mol.-weight single-hydrogen-bond donor catalysts for the activation of nitroalkenes. Selected 2-borylbenzoic acid derivatives gave good yields of products in the addition of indoles to nitroalkenes. Control experiments suggest that both the internal Lewis acid coordination and the carboxylic acid functionalities are critical to the optimal performance of these catalysts.

Synthesis published new progress about 1146214-86-9. 1146214-86-9 belongs to esters-buliding-blocks, auxiliary class Boronic acid and ester, name is Methyl 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-4-(trifluoromethyl)benzoate, and the molecular formula is C15H18BF3O4, Name: Methyl 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-4-(trifluoromethyl)benzoate.

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

Otsu, Takayuki published the artcileFeatures of living radical polymerization of vinyl monomers in homogeneous system using N,N-diethyldithiocarbamate derivatives as photoiniferters, HPLC of Formula: 3052-61-7, the publication is European Polymer Journal (1995), 31(1), 67-78, database is CAplus.

The radical polymerizations of styrene, Me methacrylate, Me acrylate, vinyl acetate, acrylonitrile and methacrylonitrile were carried out in the presence of N,N-diethyldithiocarbamate photoiniferters. The effects of the photoiniferter structure on the polymerizations were investigated as well as the effects of the conditions, such as monomer and iniferter concentrations, polymerization temperature and light wavelength. The appropriate conditions for the living radical polymerizations of these monomers were determined Stabilization of the iniferter site at the chain end was also attempted.

European Polymer Journal 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, T. published the artcileLiving radical polymerization through the use of iniferters: controlled synthesis of polymers, Recommanded Product: Benzyl diethylcarbamodithioate, the publication is European Polymer Journal (1989), 25(7-8), 643-50, database is CAplus.

Some characteristics of the living radical polymerizations of styrene and Me methacrylate with tetraethylthiuram disulfide, benzyl N,N-diethyldithiocarbamate, p-xylylene bis(N,N-diethyldithiocarbamate), and tetrakis(N,N-diethyldithiocarbamyl)benzene as photoiniferters are described and discussed. Furthermore, the synthesis of block copolymers consisting of controlled structure with these polymeric photoiniferters are described and discussed.

European Polymer Journal 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, Recommanded Product: Benzyl diethylcarbamodithioate.

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