Category: 517-23-7

On June 30, 2022, El-Essawy, Farag A.; Ali, Noora T. G.; Boshta, Nader M. published an article.Application In Synthesis of 3-Acetyldihydrofuran-2(3H)-one The title of the article was Synthesis and Anti-HIV Activity of Poly-Heterocyclic Compounds Containing Quinoline Moiety. And the article contained the following:

A novel series of poly-heterocyclic compounds containing quinoline as antiviral agents against HIV was designed and synthesized. Structures of these novel derivatives was confirmed by IR, NMR, and EI-MS spectra. Most of the products was tested for their HIV inhibitory activity and characterized by high to moderate activity. The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).Application In Synthesis of 3-Acetyldihydrofuran-2(3H)-one

The Article related to pyrrolo pyrimidopyrazolo quinolinone preparation antiviral agent, Heterocyclic Compounds (More Than One Hetero Atom): Other 6-Membered Rings, Three Or More Hetero Atoms and other aspects.Application In Synthesis of 3-Acetyldihydrofuran-2(3H)-one

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On August 28, 2018, Garra, Patxi; Dumur, Frederic; Nechab, Malek; Morlet-Savary, Fabrice; Dietlin, Celine; Graff, Bernadette; Doronina, Evgeniya Pavlovna; Sidorkin, Valery F.; Gigmes, Didier; Fouassier, Jean-Pierre; Lalevee, Jacques published an article.Recommanded Product: 517-23-7 The title of the article was Peroxide-Free and Amine-Free Redox Free Radical Polymerization: Metal Acetylacetonates/Stable Carbonyl Compounds for Highly Efficient Synthesis of Composites. And the article contained the following:

New peroxide-free, amine-free, and phosphine-free redox free radical polymerization (RFRP) initiating systems comprising remarkably stable (i) metal acetylacetonates (Mn(acac)3, Cu(acac)2) and (ii) carbonyl compounds bearing labile hydrogen in the α-position are presented for polymerization initiation under mild conditions (under air, at room temperature, nonpurified monomers). The systems proposed in this work are competitive or even outranked the well-known peroxide-based RFRP reference in several criteria: (i) toxicity, (ii) stability, (iii) surface curing, (iv) overall double-bond conversions, and (v) workability of the RFRP mixture (longer gel times are now possible). Radical initiating reactions are studied using many complementary exptl./theor. techniques: optical pyrometry, thermal imaging, Raman confocal microscopy, ESR (ESR), ESR spin trapping (ESR-ST), high-resolution electrospray ionization mass spectrometry (HR-ESI-MS), d. functional theory (DFT), simulations of bond dissociation energies (BDE), reaction enthalpies, and DFT simulations of seven unknown ESR-ST adducts. A full consistent picture of the chem. mechanisms involved in these new redox systems is provided. The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).Recommanded Product: 517-23-7

The Article related to reducing agent methal acetylacetonate radical polymerization initiation, Chemistry of Synthetic High Polymers: Polymerization Kinetics, Mechanisms, Thermodynamics, Catalysis, Catalysts and other aspects.Recommanded Product: 517-23-7

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Zhang, Wenzhao; Zhu, Yunbo; Zhang, Long; Luo, Sanzhong published an article in 2018, the title of the article was Asymmetric α-Alkylation of β-Ketocarbonyls via Direct Phenacyl Bromide Photolysis by Chiral Primary Amine.Recommanded Product: 517-23-7 And the article contains the following content:

Enantioselective α-photoalkylation of β-ketocarbonyls without any external photosensitizer was described in this work. The photoalkylation reactions, enabled solely by a chiral primary amine catalyst, provided convenient constructions of all-carbon quaternary stereocenters with good activity and high enantioselectivity. Mechanism studies revealed a direct photolytic radical chain process under visible light irradiation The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).Recommanded Product: 517-23-7

The Article related to diketone phenacyl bromide amine photochem enantioselective regioselective alkylation, Benzene, Its Derivatives, and Condensed Benzenoid Compounds: Ketones and Derivatives, Including Quinones and Sulfur Analogs and other aspects.Recommanded Product: 517-23-7

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On May 9, 2018, Patel, Harshkumar H.; Prater, Matthew B.; Squire, Scott O.; Sigman, Matthew S. published an article.Synthetic Route of 517-23-7 The title of the article was Formation of Chiral Allylic Ethers via an Enantioselective Palladium-Catalyzed Alkenylation of Acyclic Enol Ethers. And the article contained the following:

This report details a palladium-catalyzed process to access highly functionalized, optically active allylic aryl ethers. A number of electron-deficient alkenyl triflates underwent enantioselective and site-selective coupling with acyclic aryl enol ethers in the presence of a chiral palladium catalyst. This transform provides chiral allylic ether products in high yields and excellent enantiomeric ratios, furnishing a unique disconnection to incorporate heteroatoms at a stereocenter. Finally, the applicability of the products to target synthesis was demonstrated through the formation of a chiral allylic alc. and the generation of a flavone-inspired product. The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).Synthetic Route of 517-23-7

The Article related to chiral allylic aryl ether preparation palladium catalyzed alkenylation, enantioselective palladium catalyzed alkenylation acyclic enol ether, Benzene, Its Derivatives, and Condensed Benzenoid Compounds: Ethers, Sulfides, and The Corresponding Onium Compounds and other aspects.Synthetic Route of 517-23-7

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On February 28, 2022, Thirunavukkarasu, M.; Balaji, G.; Muthu, S.; Sakthivel, S.; Prabakaran, P.; Irfan, Ahmad published an article.Computed Properties of 517-23-7 The title of the article was Theoretical conformations studies on 2-Acetyl-gamma-butyrolactone structure and stability in aqueous phase and the solvation effects on electronic properties by quantum computational methods. And the article contained the following:

The 2-Acetyl-gamma-butyrolactone (2-AgBL) was characterized by quantum computational studies with DFT approaches. A relaxed PES scan was employed in this study to determine the order of stability conformations in the vacuum and aqueous phases, and then dimerization for the stable conformer was done in water phase. The mol. structure and geometries of monomer, as well as a dimer for the stable conformer were obtained, and they were confirmed by theor. IR spectroscopy. The ELF, LOL, QTAIM and NCI-RDG techniques are utilized to explore weak donor strong acceptor (C-H···O=C) type hydrogen bonds and other non-covalent interactions in dimer. The stability of compound was internally assessed by the NBO anal. in different mediums. On the gas and solvent phases: UV-Vis absorptions, Mol. Electrostatic potentials, global reactive parameters (FMOs), and Fukui Functions anal. were also performed in this study. A Solute-solvent interaction center was found in the water solvent for 2-AgBL. The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).Computed Properties of 517-23-7

The Article related to acetyl butyrolactone electronic structure stabilization energy solvatochromism, Physical Organic Chemistry: Stereochemistry and Stereochemical Relationships, Including Conformational Inversions and Rotational Isomerization and other aspects.Computed Properties of 517-23-7

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Heckenbichler, Kathrin; Schweiger, Anna; Brandner, Lea Alexandra; Binter, Alexandra; Toplak, Marina; Macheroux, Peter; Gruber, Karl; Breinbauer, Rolf published an article in 2018, the title of the article was Asymmetric Reductive Carbocyclization Using Engineered Ene Reductases.Application of 517-23-7 And the article contains the following content:

Ene reductases from the Old Yellow Enzyme (OYE) family reduce the C=C double bond in α,β-unsaturated compounds bearing an electron-withdrawing group, for example, a carbonyl group. This asym. reduction has been exploited for biocatalysis. Going beyond its canonical function, we show that members of this enzyme family can also catalyze the formation of C-C bonds. α,β-Unsaturated aldehydes and ketones containing an addnl. electrophilic group undergo reductive cyclization. Mechanistically, the two-electron-reduced enzyme cofactor FMN delivers a hydride to generate an enolate intermediate, which reacts with the internal electrophile. Single-site replacement of a crucial Tyr residue with a non-protic Phe or Trp favored the cyclization over the natural reduction reaction. The new transformation enabled the enantioselective synthesis of chiral cyclopropanes in up to >99 % ee. The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).Application of 517-23-7

The Article related to ene reductase opr3 yqjm asym reductive carbocyclization chiral cyclopropane, c−c-bond formation, asymmetric synthesis, biocatalysis, enoate reductases, protein engineering and other aspects.Application of 517-23-7

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Rajalakshmi, K.; Thirunavukkarasu, m. published an article in 2018, the title of the article was Vibrational assignments of α-acetyl -γ- butyrolactone by ab initio Hartree-Fock and density functional methods.HPLC of Formula: 517-23-7 And the article contains the following content:

The Fourier transform IR and FT-Raman spectra of α-acetyl-γ-butyrolactone have been recorded in region 4,000-400 and 4,000-100 cm-1 resp. A complete assignment and anal. of fundamental vibration modes of the mol. have been carried out. The observed fundamental modes have been compared with harmonic vibration frequencies computed using d. functional theory calculations by employing B3LYP functional at 6-311 + G(d,p) level. UV-Visible spectrum of the compound has been recorded and electronic properties, such as HOMO (HOMO) and LUMO (LUMO) energies have been calculated with B3LYP/6-311 + + G(d,p) level. These calculated energies show that charge transfer occurs within mol. Mulliken population anal. and thermodn. properties of title compound have also been calculated The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).HPLC of Formula: 517-23-7

The Article related to acetyl butyrolactone charge chem potential heat capacity homo uv, Physical Organic Chemistry: Absorption, Emission, Reflection, and Scattering Spectra (Ultraviolet and Visible, Infrared and Fourier Transform Infrared, Raman, Microwave, Photoelectron, Fluorescence, Phosphorescence, etc.) and other aspects.HPLC of Formula: 517-23-7

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On June 30, 2021, Taib, Layla Ahmed; Keshavarz, Mosadegh; Parhami, Abolfath published an article.COA of Formula: C6H8O3 The title of the article was Solvent-free synthesis of 4-substituted coumarins catalyzed by novel Bronsted acidic ionic liquids with perchlorate anion: a convenient and practical complementary method for pechmann condensation. And the article contained the following:

Herein, three novel sulfonic-functionalized Bronsted acidic ionic liquids containing perchlorate anion counterparts e.g., I were prepared These ionic liquid catalysts e.g., I were prepared through simple and ecofriendly procedures and then applied as efficient catalysts with high yields under solvent-free conditions for the synthesis of 4-substituted coumarins e.g., II through the Pechmann condensation of different phenols e.g., naphthalen-1-ol and β-ketoesters R(O)CH(R1)C(O)OR2 [R = Me, Ph; R1 = H; R2 = Et; R1R2 = -(CH2)2-]. Compared to previous works, the proposed method offers several benefits, such as cleaner reactions, decreased reaction times, high yields, and the lack of laborious workup or purification procedures. Particularly, these catalysts make the condensation of less activated phenols feasible. Besides the described benefits, this advanced protocol was applied successfully for the synthesis of coumarins e.g., III from γ-lactone as 3-acetyldihydrofuran-2(3H)-one. The simplicity in operation, applicability and feasibility of this protocol for diverse substrates make it an efficient alternative to conventional methods. The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).COA of Formula: C6H8O3

The Article related to coumarin preparation green chem, phenol ketoester pechmann condensation ionic liquid perchlorate anion catalyst, Heterocyclic Compounds (One Hetero Atom): Benzopyrans (Including Coumarins, Isocoumarins, Chromones, Benzopyrones, Dibenzopyrans, and Other Arenopyrans) and other aspects.COA of Formula: C6H8O3

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On December 28, 2020, Yu, Bao; Perfetto, Anna; Allievi, Luca; Dhambri, Sabrina; Rager, Marie-Noelle; Selkti, Mohamed; Ciofini, Ilaria; Lannou, Marie-Isabelle; Sorin, Geoffroy published an article.Related Products of 517-23-7 The title of the article was Silver(I) Oxide-/DBU-Promoted Synthesis of Dihydrofuran Units through Allenyl Silver Formation. And the article contained the following:

Herein, a formal [3+2] cyclization mediated by silver(I) oxide and 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) was described. Through a broad variety of carbonyl compounds, this system can promote cyclization reactions with high yield (up to 85%) and diastereoselectivity (up to 95:5) for a straightforward access to complex and congested dihydrofuran derivatives in one step under mild conditions. Based on DFT studies, the proposed mechanism would involve an allenyl silver intermediate. The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).Related Products of 517-23-7

The Article related to polycyclic dihydrofuran preparation, keto ester silver catalyst diastereoselective heterocyclization, allenyl silver, dihydrofuran, intramolecular cyclization, isomerization and other aspects.Related Products of 517-23-7

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On August 28, 2019, Huang, Ya Nan; Fan, Long Fei; Rong, Min Zhi; Zhang, Ming Qiu; Gao, Yu Ming published an article.Product Details of 517-23-7 The title of the article was External Stress-Free Reversible Multiple Shape Memory Polymers. And the article contained the following:

The present work is focused on developing external stress-free two-way triple shape memory polymers (SMPs). Accordingly, a series of innovative approaches are proposed for the material design and preparation Polyurethane prepolymers carrying crystalline polytetrahydrofuran (PTMEG) and poly(ε-caprolactone) (PCL) as the switching phases are resp. synthesized in advance and then crosslinked to produce the target material. The stepwise method is believed to be conducive to manipulation of the relative contribution of PCL and PTMEG. Moreover, the chain extender, 2-amino-5-(2-hydroxyethyl)-6-methylpyrimidin-4-ol (UPy), is incorporated to establish hydrogen bonds among the macromols. By straightforward stretching treatment at different temperatures, the hydrogen bond networks are successfully converted into an internal stress provider, which overcomes the challenge of stress relaxation of the melted low melting temperature polymer (i.e., PTMEG) and increases the efficiency of stress transfer. Meanwhile, the contraction force of the switching phases is tuned to match the internal tensile stress. As a result, the internal stress provider can closely collaborate with melting/recrystallization of the crystalline domains, leading to the repeated multiple shape memory effects. The crosslinked polyurethane is thus able to reversibly morph among three shapes and displays its potentials as soft robot and actuator. The strategy reported here has the advantages of easily accessible raw materials, simple reaction, and facile programing/deprograming/reprograming, so that it possesses wide applicability. The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).Product Details of 517-23-7

The Article related to shape memory polyurethane synthesis robot actuator, hydrogen bonds, multiple shape memory polymer, polyurethane, reversible shape memory effect, two-way shape memory effect and other aspects.Product Details of 517-23-7

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics