Category: 517-23-7

Shershnev, Ivan published the artcileThe use of α-diazo-γ-butyrolactone in the Buchner-Curtius-Schlotterbeck reaction of cyclic ketones: A facile entry into spirocyclic scaffolds, Related Products of esters-buliding-blocks, the publication is Tetrahedron Letters (2019), 60(27), 1800-1802, database is CAplus.

The first example of the Buchner-Curtius-Schlotterbeck reaction of cyclic ketones with a stabilized cyclic diazo compound partner is described. The approach towards spirocyclic scaffolds has been exemplified with readily available α-diazo-γ-butyrolactone. The reaction proved to be viable with BF₃·OEt₂ as the preferred catalyst and displayed substantial sensitivity to the size of the cyclic ketone.

Tetrahedron Letters published new progress about 517-23-7. 517-23-7 belongs to esters-buliding-blocks, auxiliary class Tetrahydrofuran,Ketone,Ester, name is 3-Acetyldihydrofuran-2(3H)-one, and the molecular formula is C5H6BNO2, Related Products of esters-buliding-blocks.

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

Kieslich, David published the artcileFormation of δ-Lactones by Cyanide Catalyzed Rearrangement of α-Hydroxy-β-oxoesters, Related Products of esters-buliding-blocks, the publication is Organic Letters (2021), 23(3), 953-957, database is CAplus and MEDLINE.

δ-Valerolactone derivatives such as I are formed by cyanide-catalyzed ring-transformation of cyclic α-hydroxy-β-oxoesters such as II (R = HO). This unprecedented reaction defines a new synthetic methodol., and the products are obtained in up to quant. yields. Several alkyl substitutions as well as different ester residues are tolerated. Furthermore, benzo- and heteroarene-annulated starting materials such as II (R = HO) are converted without difficulty. As an addnl. benefit, the starting materials are straightforwardly accessed by cerium-catalyzed aerobic α-hydroxylation of readily available β-oxoesters such as II (R = H).

Organic Letters published new progress about 517-23-7. 517-23-7 belongs to esters-buliding-blocks, auxiliary class Tetrahydrofuran,Ketone,Ester, name is 3-Acetyldihydrofuran-2(3H)-one, and the molecular formula is C6H8O3, Related Products of esters-buliding-blocks.

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

Ye, Juan published the artcileUV-Curable Polyurethane Elastomer with UV-Irradiation/Thermo Dual-Activated Self-Healability, SDS of cas: 517-23-7, the publication is Macromolecular Materials and Engineering (2022), 307(6), 2100874, database is CAplus.

Self-healable polyurethane elastomers have potential applications in many fields, however, their use is limited by single self-healing mechanism, intricate preparation process, and long curing time. Herein, a UV-irradiation/thermo dual-induced self-healing polyurethane elastomer is prepared by UV-curing two kinds of acrylates, where one includes a quadruple hydrogen bond (PU-UPy-HEA) and the other contains a disulfide bond (SS-MA). UV-curing kinetics indicate that the conversion of acrylates is significantly improved by tuning the irradiation intensity, photoinitiator dosage, and SS-MA content. A maximum conversion of 80% is achieved within 10 s under 200 mW cm^-2 in the case of the 1.5 weight% photoinitiator. The tensile strength of UV-cured polyurethane elastomer is notably improved by SS-MA, whereas its elongation at break decreases. Tensile shear tests demonstrates that the bisected samples can be re-bonded when they are repaired at 100°C for 15 min, or under 200 mW cm^-2 irradiation for 1 h. After that, ∼90% of shear strength is recovered and the strength is only slightly reduced after two healing cycles. Self-healing mainly relies on thermally reversible hydrogen bonding interactions and UV-induced disulfide metathesis. This UV-cured self-healable polyurethane elastomer can be used in smart coatings as well as in other fields.

Macromolecular Materials and Engineering published new progress about 517-23-7. 517-23-7 belongs to esters-buliding-blocks, auxiliary class Tetrahydrofuran,Ketone,Ester, name is 3-Acetyldihydrofuran-2(3H)-one, and the molecular formula is C10H15NS, SDS of cas: 517-23-7.

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

Xie, Peizhong published the artcileAlkaline-earth Metal-Catalyzed Dehydrative Allylic Alkylation, Formula: C6H8O3, the publication is Organic Letters (2020), 22(1), 31-35, database is CAplus and MEDLINE.

An alk.-earth metal catalytic system for environmentally benign allylic alkylation was developed. Allylic alcs. can be utilized directly at room temperature in this transition metal-free process, producing water as the only byproduct. A variety of allylic compounds, including the ones containing all-carbonyl quaternary centers, can be obtained with high yields.

Organic Letters published new progress about 517-23-7. 517-23-7 belongs to esters-buliding-blocks, auxiliary class Tetrahydrofuran,Ketone,Ester, name is 3-Acetyldihydrofuran-2(3H)-one, and the molecular formula is C8H14O4, Formula: C6H8O3.

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

Cohen, Marianne published the artcileBiomolecules from olive pruning waste in Sierra Magina – Engaging the energy transition by multi-actor and multidisciplinary analyses, Safety of 3-Acetyldihydrofuran-2(3H)-one, the publication is Journal of Environmental Management (2018), 204-213, database is CAplus and MEDLINE.

The price volatility of fossil resources, the uncertainty of their long-term availability and the environmental, climatic and societal problems posed by their operation lead to the need of an energy transition enabling the development and utilization of other alternative and sustainable resources. Acknowledging that indirect land-use change can increase greenhouse gas emission, the European Union (EU) has reshaped its biofuel policy. It has set criteria for sustainability to ensure that the use of biofuels guarantees real carbon savings and protects biodiversity. Approaching economic, environmental and social sustainability at the local level and in an integrated way should help to maximize benefits and minimize risks. This approach has been adopted and is described in the present work that combines chem., biol., social and territorial studies on the management of pruning waste residues from olive trees in the Sierra Magina in Spain. The biol. and social analyses helped to orientate the research towards an attractive chem. process based on extraction and pyrolysis, in which high added value mols. are recovered and in which the residual biochar may be used as pathogen-free fertilizer. In this region where farmers face declining economic margins, the new intended method may both solve greenhouse gas emission problems and provide farmers with addnl. revenues and convenient fertilizers.

Journal of Environmental Management published new progress about 517-23-7. 517-23-7 belongs to esters-buliding-blocks, auxiliary class Tetrahydrofuran,Ketone,Ester, name is 3-Acetyldihydrofuran-2(3H)-one, and the molecular formula is C6H8O3, Safety of 3-Acetyldihydrofuran-2(3H)-one.

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

Wang, Mengdan published the artcileSequential C-C σ-Bond Cleavage/(sp²) C-O Bond Formation via C-H Functionalization toward Pyranoindolones Fused with Medium-Sized Rings, Recommanded Product: 3-Acetyldihydrofuran-2(3H)-one, the publication is Organic Letters (2018), 20(19), 6130-6134, database is CAplus and MEDLINE.

An atom-economical procedure for the synthesis of pyranoindolones fused with 7- or 8-membered rings has been developed. This process is realized through the sequential Cs₂CO₃-promoted C-C σ-bond cleavage of cyclic ketoesters and a ZnI₂-mediated selective C-H/O-H coupling reaction. Two of the C-C σ-bonds are cleaved and one of the sp² C-H bonds is functionalized during the reaction process. Easily accessible starting materials and broad substrate scope make this protocol attractive in synthetic organic chem.

Organic Letters published new progress about 517-23-7. 517-23-7 belongs to esters-buliding-blocks, auxiliary class Tetrahydrofuran,Ketone,Ester, name is 3-Acetyldihydrofuran-2(3H)-one, and the molecular formula is C10H9NO4S, Recommanded Product: 3-Acetyldihydrofuran-2(3H)-one.

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

Thiyagarajan, Subramanian published the artcileKOtBu-Catalyzed Michael Addition Reactions Under Mild and Solvent-Free Conditions, HPLC of Formula: 517-23-7, the publication is Chemistry – An Asian Journal (2020), 15(4), 518-523, database is CAplus and MEDLINE.

Herein, a mild and environmentally friendly strategy of readily available KOtBu-catalyzed Michael addition reactions was demonstrated. This simple inorganic base efficiently catalyzed the Michael addition of underexplored acrylonitriles, esters and amides with oxa-, aza-, and thia-heteroatom nucleophiles to afford Michael addition products. This catalytic process proceeded under solvent-free conditions and at room temperature Notably, this protocol offered an easy operational procedure, broad substrate scope with excellent selectivity, reaction scalability and excellent TON (>9900). Preliminary mechanistic studies revealed that the reaction followed an ionic mechanism. Formal synthesis of promazine was demonstrated using this catalytic protocol.

Chemistry – An Asian Journal published new progress about 517-23-7. 517-23-7 belongs to esters-buliding-blocks, auxiliary class Tetrahydrofuran,Ketone,Ester, name is 3-Acetyldihydrofuran-2(3H)-one, and the molecular formula is C5H12O2, HPLC of Formula: 517-23-7.

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

Shin, Dongha published the artcileGold nanoparticle-mediated non-covalent functionalization of graphene for field-effect transistors, Formula: C6H8O3, the publication is Nanoscale Advances (2021), 3(5), 1404-1412, database is CAplus.

Since its discovery, graphene has attracted much attention due to its unique elec. transport properties that can be applied to high-performance field-effect transistors (FETs). However, mounting chem. functionalities onto graphene inevitably involves the breaking of sp² bonds, resulting in the degradation of the mech. and elec. properties compared to pristine graphene. Here, we report a new strategy to chem. functionalize graphene for use in FETs without affecting the elec. performance. The key idea is to control the Fermi level of the graphene using the consecutive treatment of gold nanoparticles (AuNPs) and thiol-SAM (self-assembled monolayer) mols., inducing pos. and neg. doping effects, resp., by flipping the elec. dipoles between AuNPs and SAMs. Based on this method, we demonstrate a Dirac voltage switcher on a graphene FET using heavy metal ions on functionalized graphene, where the carboxyl functional groups of the mediating SAMs efficiently form complexes with the metal ions and, as a result, the Dirac voltage can be pos. shifted by different charge doping on graphene. We believe that the nanoparticle-mediated SAM functionalization of graphene can pave the way to developing high-performance chem., environmental, and biol. sensors that fully utilize the pristine properties of graphene.

Nanoscale Advances published new progress about 517-23-7. 517-23-7 belongs to esters-buliding-blocks, auxiliary class Tetrahydrofuran,Ketone,Ester, name is 3-Acetyldihydrofuran-2(3H)-one, and the molecular formula is C11H20N2O3, Formula: C6H8O3.

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

Gembus, Vincent published the artcileRegioselective pinacol rearrangement of unsymmetrical cyclobutane-1,2-diols, Application In Synthesis of 517-23-7, the publication is Bulletin of the Chemical Society of Japan (2018), 91(3), 319-336, database is CAplus.

Hydroxy-sulfone I, prepared as a mixture of trans and cis isomers, was found to rearrange selectively either to the cyclopropanic β-ketosulfone II or the isomeric Me ketone III by using, resp., the tosyl fluoride/DBU and the DAST reagent. The potential of this methodol. has been illustrated by a synthesis of phytal from geranylacetone, and by the preparation from 3,4-hexanedione and prenol – via the cyclopropanic β-ketosulfone IV (X-ray) – of an advanced fragment of the juvenile hormone V.

Bulletin of the Chemical Society of Japan published new progress about 517-23-7. 517-23-7 belongs to esters-buliding-blocks, auxiliary class Tetrahydrofuran,Ketone,Ester, name is 3-Acetyldihydrofuran-2(3H)-one, and the molecular formula is C6H8O3, Application In Synthesis of 517-23-7.

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

Rajmani Singh, Rahul Kumar published the artcileCopper-catalyzed enantioselective direct α-C-H amination of β-dicarbonyl derivatives with aryl hydroxylamines and mechanistic insights, Synthetic Route of 517-23-7, the publication is Molecular Catalysis (2020), 111067, database is CAplus.

Authors report a novel and efficient Cu-catalyzed direct asym. amination of tertiary β-carbonyl compounds using aryl hydroxylamine as electrophilic nitrogen donor. The process facilitates the convenient and direct synthesis of chiral α-amino carbonyl derivatives, without the need for any post-reaction manipulation. This method reveals an effective strategy for the synthesis of enantioenriched α-C-H aminated derivatives which is hitherto challenging. The choice of the robust chiral indabox ligand was ascertained to be very crucial for the desired enantioselectivity in the contemporary transformation. The reaction mechanism is fully supported by ab initio electronic structure calculations The reaction is facile, efficient and performs well at room temperature with an enantiomeric excess (ee) up to 93%.

Molecular Catalysis published new progress about 517-23-7. 517-23-7 belongs to esters-buliding-blocks, auxiliary class Tetrahydrofuran,Ketone,Ester, name is 3-Acetyldihydrofuran-2(3H)-one, and the molecular formula is C6H8O3, Synthetic Route of 517-23-7.

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