Esters-buliding-blocks

Wu, Hao published the artcileDesign of High-Humidity-Proof Hierarchical Porous P-ZIF-67(Co)-Polymer Composite Materials by Surface Modification for Highly Efficient Volatile Organic Compound Adsorption, COA of Formula: C15H20O6, the publication is Industrial & Engineering Chemistry Research (2022), 61(10), 3591-3600, database is CAplus.

The ubiquitous water vapor in industrial gas is a challenge for volatile organic compound (VOC) adsorbents. Herein, we have developed a strategy to improve the hydrophobicity and water stability of ZIF-67(Co) through internal and external modification. Through amine modification of the carrier surface rich in nanoscale roughness, the shape and size of ZIF-67(Co) are changed. ZIF-67(Co) is uniformly anchored on the macroporous surface of polyacrylates (PA) through interface coordination, forming a unique hierarchical porous structure. Compared with the original ZIF-67(Co), the toluene adsorption efficiency of ZIF-67(Co)@PA is increased by 2.75 times at 298 K and at a toluene partial pressure of P/P₀ = 0.005. Furthermore, to inhibit undesired water adsorption due to the rich defect sites, hydrophobically modified ZIF-67(Co)@PA (yielding P-ZIF-67(Co)@PA) has also been prepared, which exhibits a slight decrease in toluene adsorption and maintains the advantages of low water vapor adsorption and high hydrophobicity to improve the water stability of ZIF-67(Co).

Industrial & Engineering Chemistry Research 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 C8H8O3, COA of Formula: C15H20O6.

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

Chen, Shuqing published the artcileRedox-neutral ortho-C-H amination of pinacol arylborates via palladium(II)/norbornene catalysis for aniline synthesis, Synthetic Route of 1293284-58-8, the publication is Chemical Science (2019), 10(36), 8384-8389, database is CAplus and MEDLINE.

A palladium(II)/norbornene cooperative catalysis enabled redox-neutral ortho-C-H amination of pinacol aryl- or heteroarylborates for the synthesis of structurally diverse anilines was reported. The method was scalable, robust (tolerance of air and moisture), phosphine ligand-free and compatible with a wide range of functionalities. These practical features made this reaction amenable for industry. A plethora of synthetically very useful halogenated anilines which often cannot be prepared via other transition-metal-catalyzed aminations were readily produced using this method. Particularly, the orthogonal reactivity between pinacol arylborates and aryl iodides was demonstrated. Preliminary deuterium-labeling studies revealed a redox-neutral ipso-protonation mechanism of this process, which will surely inspire the future development of this field. Overall, the exceptionally broad scope (47 examples) and reliability of this procedure, together with the wide availability of pinacol arylborates made this chem. a valuable addition to the existing methods for aniline synthesis.

Chemical Science published new progress about 1293284-58-8. 1293284-58-8 belongs to esters-buliding-blocks, auxiliary class Fluoride,Boronic acid and ester,Benzene,Ester,Benzene Compounds,Boronate Esters,Boronic Acids,Boronic acid and ester, name is Methyl 5-fluoro-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate, and the molecular formula is C14H18BFO4, Synthetic Route of 1293284-58-8.

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

Liang, Shaofeng published the artcileRecyclable, UV-Blocking, and Radiative Cooling Multifunctional Composite Membranes, HPLC of Formula: 15625-89-5, the publication is ACS Omega (2022), 7(29), 25244-25252, database is CAplus and MEDLINE.

It is well known that UV radiation can cause human health problems and that energy consumption can lead to human survival problems. Here, we prepared a composite membrane that can block UV radiation as well as reduce energy consumption. Carbon dots (CDs) and acrylates were prepared from xylose and epoxidized soybean oil as biomass feedstocks, resp., and the composite membrane was prepared by a self-assembly strategy. The first layer of the membrane is composed of CDs and epoxy resin. Its main function is not only to weaken UV rays and the aggregation-induced quenching effect of CDs but also to reduce the absorption of UV rays by the second layer of the membrane. The second layer consists of barium sulfate (BaSO₄) and acrylate. Compared to TiO₂ (3.2 eV), BaSO₄ (~6 eV) has a higher electronic band gap, which reduces the absorption of UV light by the membrane. The composite membrane exhibits excellent UV-blocking and radiative cooling performance, shielding 99% of UV rays. In addition, the membrane can reduce 4.4°C in radiative cooling tests, achieving a good cooling effect. Finally, the recyclability of the BaSO₄/acrylate membrane is discussed, and 95% recovery rate provides sustainable utilization of the membrane. The composite membrane is expected to be popularized and used in low latitudes and areas with high temperature and high UV radiation near the equator.

ACS Omega 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 C15H20O6, HPLC of Formula: 15625-89-5.

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

Gao, Mingzhang published the artcileSynthesis of carbon-11-labeled CK1 inhibitors as new potential PET radiotracers for imaging of Alzheimer’s disease, Safety of 3-(Methoxycarbonyl)benzoic acid, the publication is Bioorganic & Medicinal Chemistry Letters (2018), 28(13), 2234-2238, database is CAplus and MEDLINE.

The reference standards Me 3-((2,2-difluoro-5H-[1,3]dioxolo[4′,5′:4,5]benzo[1,2-d]imidazol-6-yl)carbamoyl)benzoate and N-(2,2-difluoro-5H-[1,3]dioxolo[4′,5′:4,5]benzo[1,2-d]imidazol-6-yl)-3-methoxybenzamide, and their corresponding desmethylated precursors 3-((2,2-difluoro-5H-[1,3]dioxolo[4′,5′:4,5]benzo[1,2-d]imidazol-6-yl)carbamoyl)benzoic acid and N-(2,2-difluoro-5H-[1,3]dioxolo[4′,5′:4,5]benzo[1,2-d]imidazol-6-yl)-3-hydroxybenzamide, were synthesized from 5-amino-2,2-difluoro-1,3-benzodioxole and 3-substituted benzoic acids in 5 and 6 steps with 33% and 11%, 30% and 7% overall chem. yield, resp. Carbon-11-labeled casein kinase 1 (CK1) inhibitors, [¹¹C]methyl 3-((2,2-difluoro-5H-[1,3]dioxolo[4′,5′:4,5]benzo[1,2-d]imidazol-6-yl)carbamoyl)benzoate and N-(2,2-difluoro-5H-[1,3]dioxolo[4′,5′:4,5]benzo[1,2-d]imidazol-6-yl)-3-[¹¹C]methoxybenzamide, were prepared from their O-desmethylated precursors with [¹¹C]CH₃OTf through O-[¹¹C]methylation and isolated by HPLC combined with SPE in 40-45% radiochem. yield, based on [¹¹C]CO₂ and decay corrected to end of bombardment (EOB). The radiochem. purity was >99%, and the molar activity (MA) at EOB was 370-740GBq/μmol with a total synthesis time of ∼40-min from EOB.

Bioorganic & Medicinal Chemistry Letters published new progress about 1877-71-0. 1877-71-0 belongs to esters-buliding-blocks, auxiliary class Carboxylic acid,Benzene,Ester, name is 3-(Methoxycarbonyl)benzoic acid, and the molecular formula is C9H8O4, Safety of 3-(Methoxycarbonyl)benzoic acid.

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

Li, Yinwen published the artcileCatalytic Transformation of PET and CO₂ into High-Value Chemicals, Application In Synthesis of 627-93-0, the publication is Angewandte Chemie, International Edition (2022), 61(10), e202117205, database is CAplus and MEDLINE.

Polyethylene terephthalate (PET) and CO₂, two chem. wastes that urgently need to be transformed in the environment, are converted simultaneously in a one-pot catalytic process through the synergistic coupling of three reactions: CO₂ hydrogenation, PET methanolysis and di-Me terephthalate (DMT) hydrogenation. More interestingly, the chem. equilibrium of both reactions were shifted forward due to a revealed dual-promotion effect, leading to significantly enhanced PET depolymerization The overall methanol yield from CO₂ hydrogenation exceeded the original thermodn. equilibrium limit since the methanol was in situ consumed in the PET methanolysis. The degradation of PET by a stoichiometric ratio of methanol was significantly enhanced because the primary product, DMT was hydrogenated to di-Me cyclohexanedicarboxylate (DMCD) or p-xylene (PX). This synergistic catalytic process provides an effective way to simultaneously recycle two wastes, polyesters and CO₂, for producing high-value chems.

Angewandte Chemie, International Edition 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, Application In Synthesis of 627-93-0.

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

Dong, Dan published the artcileAnalysis of volatile flavor components from different periods of sweet soybean paste, Formula: C20H40O2, the publication is Zhongguo Niangzao (2015), 34(6), 139-144, database is CAplus.

In order to study the difference of volatile flavor compounds of sweet soybean paste among different periods (two months, four months, six months, eight months), the volatile compounds were extracted by HS-SPME coupled with GC-MS. A total of 148 compounds divided into 7 subgroups were identified in sweet soybean paste of four periods, mainly including esters, alcs., acids and phenols. There were 34 kinds of substances detected in four different periods, accounting for 22.82% of total detected compounds, including 13 esters, 7 alc. ethers, 5 aldoketones, 2 acids, 2 phenols, and 5 other compounds

Zhongguo Niangzao 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 C20H40O2, Formula: C20H40O2.

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

Zhou, You published the artcileI₂-Promoted site-selective C-C bond cleavage of aryl methyl ketones as C1 synthons for constructing 5-acyl-1H-pyrazolo[3,4-b]pyridines, COA of Formula: C7H13NO2, the publication is Organic Chemistry Frontiers (2022), 9(16), 4416-4420, database is CAplus.

A novel iodine promoted [1 + 3 + 2] cleavage cyclization reaction for the synthesis of 1H-pyrazolo[3,4-b]pyridines from aryl Me ketones, 5-aminopyrazoles and enaminones was established. This transition metal-free catalysis method has simple reaction conditions and good substrate compatibility, and was demonstrated in the transformation of alkyl and natural mol.-derived enaminones. Mechanistic studies showed that two cyclization pathways affording different key intermediates were involved, but affording the same target product after site-selective cleavage of the unstrained C-C bond of the acyl group.

Organic Chemistry Frontiers 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 C16H24BNO2, COA of Formula: C7H13NO2.

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

Wang, Chunzhang published the artcileA New BINOL-Derived Chiral Bifunctional Phosphine Organocatalyst: Preparation and Application in Asymmetric (Aza)-Morita-Baylis-Hillman Reactions, Synthetic Route of 126613-06-7, the publication is Phosphorus, Sulfur and Silicon and the Related Elements (2013), 188(11), 1548-1554, database is CAplus.

A new BINOL-derived chiral bifunctional phosphine was designed and successfully prepared, which features a cyclic substructure of 1,3,5-diazaphosphinane. This chiral phosphine possesses good air stability in solid state, and it can be conveniently used as an effective nucleophilic phosphine organocatalyst. Preliminary studies showed that it afforded 38% to 99% yields but only modest enantioselectivity (up to 45% ee) in the (aza)-Morita-Baylis-Hillman reactions of activated olefins such as Et acrylate and Me vinyl ketone with aromatic aldehydes or imines.

Phosphorus, Sulfur and Silicon and the Related Elements published new progress about 126613-06-7. 126613-06-7 belongs to esters-buliding-blocks, auxiliary class Chiral Diphenols, name is (R)-[1,1′-Binaphthalene]-2,2′-diyl bis(trifluoromethanesulfonate), and the molecular formula is C10H20N2O6S2, Synthetic Route of 126613-06-7.

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

Ning, Lei published the artcileA Reductive Deuteration Approach to the Efficient Synthesis of Deuterated Polymers, Synthetic Route of 627-93-0, the publication is Synlett (2022), 33(8), 771-776, database is CAplus.

Deuterated polymers have wide applications but limited synthetic methods. In this study, we report an efficient two-step approach for the synthesis of deuterated polyesters and polyurethanes. Firstly, two practical single-electron transfer (SET) reductive-deuteration methods have been developed for site-selective introduction of C(sp³)-D into diol monomers. Nine deuterated diol monomers with high deuterium incorporations were synthesized under SmI₂-D₂O and/or Na-EtOD- d₁SET reductive-deuteration conditions. Then, six typical deuterated polyesters and polyurethanes were synthesized using those deuterated monomers under typical polymerization conditions. In all the synthesized polymers, high deuterium incorporation was fully maintained, which showcased the potential application of this approach for the synthesis of polymers with site-specific deuterium labeling.

Synlett 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, Synthetic Route of 627-93-0.

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

Zhang, Guowen published the artcileDesign and Control for the Dimethyl Adipate Process with a Side-Reactor Column Configuration, Synthetic Route of 627-93-0, the publication is Chemical Engineering & Technology (2021), 44(9), 1716-1725, database is CAplus.

A side-reactor column (SRC) configuration, which integrates vacuum distillation with atm. reaction, was developed for di-Me adipate (DMA) production The sequential optimization method was applied to optimize the design parameters including side stream drawn stage, reactor numbers, and catalyst loading with total annual cost (TAC) as objective function in order to realize the economical design. The best economic performance was achieved as the result of the specific SRC configuration featuring one column with 20 stages where DMA was drawn from the 5th stage and one side-reactor was equipped in the bottom. Moreover, a proportion-temperature cascade control structure was successfully developed which avoids the disturbance of inlet flow rate and composition

Chemical Engineering & Technology 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 C16H24BF4Ir, Synthetic Route of 627-93-0.

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