Category: 111-29-5

Liu, Haolan published the artcilePreparation of highly dispersed Cu catalysts from hydrotalcite precursor for the dehydrogenation of 1,4-butanediol, Quality Control of 111-29-5, the publication is Journal of Industrial and Engineering Chemistry (Amsterdam, Netherlands) (2021), 251-259, database is CAplus.

Copper-based catalysts are widely used in methanol synthesis, selective catalytic reduction of NOx, hydrogenation, dehydrogenation and hydrogenolysis reactions. In this work, a series of Cux/Zn₃–₀.₅xMg₃–₀.₅xAl₂O₉-x catalysts were prepared via the controlled calcination and reduction of hydrotalcite-like structured CuxZn₃–₀.₅xMg₃–₀.₅xAl₂(OH)₁₆CO₃ precursors. The formation process of Cu₂/Zn₂Mg₂Al₂O₇ from Cu₂Zn₂Mg₂Al₂(OH)₁₆CO₃ was characterized via several techniques. Characterizations results indicated that the dispersion of Cu in reduced Cu₂/Zn₂Mg₂Al₂O₇ reached 79.3%, and it exhibited excellent activity for the dehydrogenation of 1,4-butanediol (1,4-BDO) to γ-butyrolactone (GBL). The detected conversion of 1,4-BDO reached 99.2% with a 99.5% selectivity of GBL at 240°C, 0.1 MPa and LHSV-1 = 0.13 h, and the calculated productivity of GBL was 7.07 g-GBL/g-cat/h. And Cu₂/Zn₂Mg₂Al₂O₇ could maintain its activity within 50 h on stream.

Journal of Industrial and Engineering Chemistry (Amsterdam, Netherlands) published new progress about 111-29-5. 111-29-5 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ploymers, name is Pentane-1,5-diol, and the molecular formula is C5H12O2, Quality Control of 111-29-5.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Fuse, Hiromu published the artcileIdentification of a Self-Photosensitizing Hydrogen Atom Transfer Organocatalyst System, SDS of cas: 111-29-5, the publication is Journal of the American Chemical Society (2022), 144(14), 6566-6574, database is CAplus and MEDLINE.

Organocatalyst systems to promote the cleavage of stable C-H bonds, such as formyl, α-hydroxy and benzylic C-H bonds, through a hydrogen atom transfer (HAT) process without the use of exogenous photosensitizers have been developed. An electronically tuned thiophosphoric acid, 7,7′-OMe-TPA, were assembled with substrate or co-catalyst N-heteroaromatics through hydrogen bonding and π-π interactions to form electron donor-acceptor (EDA) complexes. Photoirradiation of the EDA complex induced stepwise, sequential single-electron transfer (SET) processes to generate a HAT-active thiyl radical. The first SET were from the electron-rich naphthyl group of 7,7′-OMe-TPA to the protonated N-heteroaromatics and the second proton-coupled SET (PCET) from the thiophosphoric acid moiety of 7,7′-OMe-TPA to the resulting naphthyl radical cation. Spectroscopic studies and theor. calculations characterized the stepwise SET process mediated by short-lived intermediates. This organocatalytic HAT system were applied to four different carbon-hydrogen (C-H) functionalization reactions, hydroxyalkylation and alkylation of N-heteroaromatics, acceptorless dehydrogenation of alcs. and benzylation of imines, with high functional group tolerance.

Journal of the American Chemical Society published new progress about 111-29-5. 111-29-5 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ploymers, name is Pentane-1,5-diol, and the molecular formula is C5H12O2, SDS of cas: 111-29-5.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Hayashi, Mikihiro published the artcileAchievement of a Highly Rapid Bond Exchange for Self-Catalyzed Polyester Vitrimers by Incorporating Tertiary Amino Groups on the Network Strands, HPLC of Formula: 111-29-5, the publication is ACS Applied Polymer Materials (2021), 3(9), 4424-4429, database is CAplus.

Herein, we describe the preparation of a self-catalyzed polyester vitrimer containing tertiary amino groups on the network strands that overcomes the significantly slow bond exchange often encountered in the reported systems. Starting from a polyester precursor bearing both carboxy and tertiary amino side groups, a selective reaction of the carboxyl groups with diepoxy cross-linkers affords a network that possesses hydroxy and tertiary amino groups. The tertiary amino groups on the network strands effectively work as internal catalysts for the trans-esterification bond exchange. Because of the high mobility of the incorporated internal amine catalyst, the bond exchange in the vitrimer material was much more rapid (more than 20 times) than that in reported self-catalyzed polyester vitrimers.

ACS Applied Polymer Materials published new progress about 111-29-5. 111-29-5 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ploymers, name is Pentane-1,5-diol, and the molecular formula is C5H12O2, HPLC of Formula: 111-29-5.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Wu, Xing-De published the artcileDesign, synthesis and structural-activity relationship studies of phanginin A derivatives for regulating SIK1-cAMP/CREB signaling to suppress hepatic gluconeogenesis, Name: Pentane-1,5-diol, the publication is European Journal of Medicinal Chemistry (2022), 114171, database is CAplus and MEDLINE.

Persistent activation of hepatic gluconeogenesis is a main cause of fasting hyperglycemia in patients with type 2 diabetes (T2D), and the salt-induced kinase 1 (SIK1) acts as a key modulator in regulating hepatic gluconeogenesis. Recently, we first reported phanginin A (PA, 1), a natural cassane diterpenoid isolated from the seeds of Caesalpinia sappan, exhibited potent anti-diabetic effect through activation of SIK1 and increasing PDE4 activity to inhibit hepatic gluconeogenesis pathway by suppressing the cAMP/PKA/CREB pathway in the liver. In present study, we designed and prepared 25 PA derivatives and their structure-activity relationship (SAR) for gluconeogenesis inhibitory activity were established. Among them, compound I exhibited remarkable inhibitory activity on hepatic gluconeogenesis by enhancing the SIK1 phosphorylation and ameliorated the hyperglycemia of type 2 diabetic mice. Our results supported that compound I could be served as a potential candidate for the treatment of T2D.

European Journal of Medicinal Chemistry published new progress about 111-29-5. 111-29-5 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ploymers, name is Pentane-1,5-diol, and the molecular formula is C16H24BF4Ir, Name: Pentane-1,5-diol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Bellotti, Peter published the artcileCatalytic defluorinative ketyl-olefin coupling by halogen-atom transfer, COA of Formula: C5H12O2, the publication is Chemical Science (2022), 13(26), 7855-7862, database is CAplus and MEDLINE.

A new approach to achieve catalytic ketyl-olefin coupling reactions by a halogen-atom transfer mechanism provides innovative and efficient access to various gem-difluorohomoallylic alcs. 4-OCH₃C₆H₄C(=C(F)₂)CH₂C(OC(O)C₆H₅)R [R = H, n-pentyl, cyclohexyl, 2-(4-fluorophenyl)ethyl, etc.] under mild conditions with broad substrate scope. Preliminary mechanistic exptl. and computational studies demonstrate that this radical-to-polar crossover transformation could be achieved by sequentially orchestrated Lewis acid activation, halogen-atom transfer, radical addition, single-electron reduction and β-fluoro elimination.

Chemical Science published new progress about 111-29-5. 111-29-5 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ploymers, name is Pentane-1,5-diol, and the molecular formula is C5H12O2, COA of Formula: C5H12O2.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Luleburgaz, Serter published the artcileChlorodimethylsilane-Mediated Reductive Etherification Reaction: A Robust Method for Polyether Synthesis, Name: Pentane-1,5-diol, the publication is Macromolecules (Washington, DC, United States) (2022), 55(5), 1533-1543, database is CAplus.

Polyethers have always been privileged compounds in polymer chem. and have found extensive applications in both academic research and industry. However, the currently employed strategies for their synthesis require harsh conditions such as ionic polymerizations together with limited precursor monomer options. In this study, a chlorodimethylsilane (CDMS)-mediated reductive etherification reaction was introduced as a versatile strategy for polyether synthesis. Accordingly, terephthalaldehyde (TPA) and 1,4-butanediol were first reacted at room temperature in the presence of CDMS using nitromethane as the polymerization solvent to reveal the optimum conditions for the proposed system. Subsequently, a variety of diols ranging from linear to sterically congested diols were reacted with TPA (and its isomers) under the optimized conditions to create a polyether library. Meanwhile, in addition to polyether having the expected alternating units, the formation of polyether stem from the self-condensation of TPA was found to be inevitable in all cases. From the proposed strategy, polyethers with a mol. weight of up to 110.4 kDa and a high alternating unit of up to 93% were obtained. The versatile and robust character of the presented strategy was supported by a model end-group study, and the polymerization behavior was examined mechanistically. It is anticipated that the presented method might be a strong candidate for polyether synthesis with different backbones, given the unlimited sources of diols.

Macromolecules (Washington, DC, United States) published new progress about 111-29-5. 111-29-5 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ploymers, name is Pentane-1,5-diol, and the molecular formula is C5H12O2, Name: Pentane-1,5-diol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Zhao, Ling published the artcileAcceptorless Dehydrogenative Cross-Coupling of Primary Alcohols Catalyzed by an N-Heterocyclic Carbene-Nitrogen-Phosphine Chelated Ruthenium(II) Complex, Safety of Pentane-1,5-diol, the publication is Journal of Organic Chemistry (2022), 87(7), 4550-4559, database is CAplus and MEDLINE.

The acceptorless dehydrogenative cross-coupling of primary alcs. to form cross-esters with the liberation of H₂ gas was enabled using a [RuCl(η⁶-C₆H₆)(κ²-CNP)][PF₆]Cl complex as the catalyst. This sustainable protocol was applicable to a broad range of primary alcs., particularly for the sterically demanding ones, featuring good functional group tolerance and high selectivity. The good catalytic performance can be attributed to the nitrogen-phosphine-functionalized N-heterocyclic carbene (CNP) ligand, which adopted a facial coordination mode as well as the facile dissociation of coordinated benzene.

Journal of Organic Chemistry published new progress about 111-29-5. 111-29-5 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ploymers, name is Pentane-1,5-diol, and the molecular formula is C8H5F3N4, Safety of Pentane-1,5-diol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Sugimoto, Kanta published the artcileVersatile tensile and fracture behaviors of dual crosslinked elastomers by postpreparation photo tuning of local crosslink density, COA of Formula: C5H12O2, the publication is Polymer (2021), 124089, database is CAplus.

This study demonstrates the postpreparation easy tuning of the Young’s modulus of elastomers by using polyesters bearing thermal and photo crosslinkable groups. In the first crosslinking step, only thermoreactive groups form crosslinks, resulting in a highly deformable soft elastomer. In the second step, photoreactive groups are crosslinked by UV irradiation, and controlling the UV irradiation time can tune the crosslink d., resulting in modulus tuning over two orders of magnitude at room temperature The use of photo reaction enables precise modulus patterning using photomasks with a series of slits. In horizontally patterned samples, the dually crosslinked stiff section shows negligible deformation, whereas large elongation is observed selectively in the single crosslinked soft sections. In vertically patterned samples, interestingly, crack propagation and complete fracture are significantly suppressed, compared with the fully dually crosslinked sample. The present data can thus provide important insight for developing new methodologies for controlling the tensile and fracture behavior of elastomers.

Polymer published new progress about 111-29-5. 111-29-5 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ploymers, name is Pentane-1,5-diol, and the molecular formula is C13H15NO6S, COA of Formula: C5H12O2.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Shao, Xuefei published the artcilePreparation of zinc-coordinated-DPA functionalized polyesters for gene condensation, SDS of cas: 111-29-5, the publication is Journal of Applied Polymer Science (2021), 138(34), 50843, database is CAplus.

Cationic polyesters have been widely utilized as efficient gene delivery carriers. Their ability in binding genes was majorly based on the electrostatic effect between the pos. charges of polymers and the negatives charges of genes. It has been well known that large numbers of pos. charges on the polymers would lead to undesired toxicity although strong gene binding capability. It was of great interest to developed a polymer with reduced pos. charges while enhanced gene condensation ability. In this work, a library of polyesters functionalized by zinc-coordinated-dimethylpyridinium amine (DPA-Zn) have been successfully prepared by the polycondensation method starting from di-Me 1,3-acetonedicarboxylate and 10 diols, followed by the post-modification using dimethylpyridinium amine and zinc nitrate. The post-modification efficiency was systemically evaluated and the optimized functionalization efficiency could reach around 50%. The gene condensation ability of the targeting polymers was also evaluated using gel retardation assay and dynamic light scatting. The results indicated that DPA-Zn functionalized polyesters could bind gene into nanocomplexes with the sizes around 200 nm.

Journal of Applied Polymer Science published new progress about 111-29-5. 111-29-5 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ploymers, name is Pentane-1,5-diol, and the molecular formula is C15H10O2, SDS of cas: 111-29-5.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Byun, Jaewon published the artcileImpact of uncertainty in technological cycle on circular economy: Bio-based jet fuel range alkenes and pentanediols production, HPLC of Formula: 111-29-5, the publication is Journal of Industrial and Engineering Chemistry (Amsterdam, Netherlands) (2021), 356-361, database is CAplus.

In terms of circular economy (CE), the coprodn. of biofuels and bio-based chems. could be a feasible strategy to improve the biorefinery economics. However, this approach is significantly affected by the variation of the techno-economic parameters. Thus, we evaluated the techno-economic feasibility of an integrated strategy through deterministic and stochastic models for the coprodn. of biofuels (jet fuel range alkenes (JFA)) and bio-based chems. (pentanediols and pentane) to identify the impact of uncertainty in technol. cycle on the CE action plan. The deterministic anal. estimated the min. JFA selling price (MJSP) expressed per gasoline gal equivalent (GGE) and led to the identification of six major techno-economic parameters having a significant impact on the economics. Stochastic anal. was performed based on the Monte Carlo simulation, leading to probabilistic results on the economic feasibility of the integrated strategy, taking into account the uncertainty in the six identified parameters. In five of the six scenarios developed considering each uncertainty, the chances of MJSP being lower than the maximum biofuel price (USD 3.10 GGE^-1) in the last three years (2017-2019) were higher than 50% (53.2-88.1%), implying that, despite the uncertainties reflected in the major techno-economic parameters, the integrated strategy could be a risk-averse investment.

Journal of Industrial and Engineering Chemistry (Amsterdam, Netherlands) published new progress about 111-29-5. 111-29-5 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ploymers, name is Pentane-1,5-diol, and the molecular formula is C5H12O2, HPLC of Formula: 111-29-5.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts