Month: November 2022

On May 6, 2020, Jurrat, Mark; Pointer-Gleadhill, Benjamin J.; Ball, Liam T.; Chapman, Andy; Adriaenssens, Louis published an article.Application In Synthesis of 1,3-Diphenylurea The title of the article was Polyurethanes and Polyallophanates via Sequence-Selective Copolymerization of Epoxides and Isocyanates. And the article contained the following:

Aryl isocyanates are introduced as comonomers for ring opening copolymerization (ROCOP) with epoxides. Informed by studies of reaction kinetics, we show that divergent sequence selectivity for AB- and ABB-type copolymers can be achieved with a single dimagnesium catalyst. The resulting materials resp. constitute a new class of polyurethane (PU) and a new class of material featuring an unprecedented backbone structure, the polyallophanate (PA). The successful use of isocyanate comonomers in this way marks a new direction for the field of ROCOP, while providing distinct opportunities for expansion of PU structural diversity. Specifically, the methodol. reported herein delivers PUs featuring fully substituted (tertiary) carbamyl nitrogen atoms, a structural motif that is almost inaccessible via extant polymerization strategies. Thus, in one step from com. available comonomers, our methodol. expands the scope of ROCOP and gives access to diverse materials featuring both privileged (PU) and unexplored (PA) microstructures. The experimental process involved the reaction of 1,3-Diphenylurea(cas: 102-07-8).Application In Synthesis of 1,3-Diphenylurea

The Article related to polyurethane polyallophanate sequence copolymerization epoxide isocyanate, Chemistry of Synthetic High Polymers: Ring-Opening and Other Polymerizations and other aspects.Application In Synthesis of 1,3-Diphenylurea

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

On October 27, 2020, Lin, Binhong; Jadrich, Caleb N.; Pane, Vince E.; Arrechea, Pedro L.; Erdmann, Tim; Dausse, Charles; Hedrick, James L.; Park, Nathaniel H.; Waymouth, Robert M. published an article.Category: amides-buliding-blocks The title of the article was Ultrafast and Controlled Ring-Opening Polymerization with Sterically Hindered Strong Bases. And the article contained the following:

The controlled anionic ring-opening polymerization of lactones and siloxanes is carried out in continuous-flow reactors. Anionic ring-opening polymerization of cyclic esters with strong, soluble bases such as potassium tert-butoxide (KOtBu) is typically performed as batch reactions, leading to broad dispersity and poor control over the mol. weight (Mn) mainly because of transesterification reactions. Although reactions with strong bases give rise to “uncontrolled” polymerizations, a variety of transition metal-based and organocatalysts have been developed with the goal of reliably controlling the dispersity and Mn. Herein, we show that the rapid mixing and short residence times accessible with a continuous-flow apparatus can enable the controlled polymerization of low-reactivity monomers such as δ-valerolactone and ε-caprolactone on millisecond time scales using a base [such as KOtBu or potassium bis(trimethylsilyl)amide (KHMDS)] in conjunction with a primary alc. These reactions exhibit characteristics capable of producing narrow dispersity with predictable mol. weights and can rapidly generate well-defined block copolymers with residence times below 0.1 s. The experimental process involved the reaction of 1,3-Diphenylurea(cas: 102-07-8).Category: amides-buliding-blocks

The Article related to ultrafast controlled ring opening polymerization sterically hindered strong base, Chemistry of Synthetic High Polymers: Ring-Opening and Other Polymerizations and other aspects.Category: amides-buliding-blocks

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

Rassou, Somasoudrame; Illy, Nicolas; Tezgel, Ozgul; Guegan, Philippe published an article in 2018, the title of the article was Anionic ring-opening polymerization of N-glycidylphthalimide: Combination of phosphazene base and activated monomer mechanism.Computed Properties of 5455-98-1 And the article contains the following content:

Anionic ring-opening polymerization of glycidyl phthalimide, initiated with alc.-phosphazene base systems and based on monomer activation with a Lewis acid (iBu3Al), has been studied. No propagation occurred for initiator: iBu3Al ratios less or equal to 1:3. For larger Lewis acid amounts, the first anionic ring-opening polymerizations of glycidyl phthalimide were observed Polymers were carefully characterized by NMR, MALDI-TOF mass spectrometry, and size exclusion chromatog. and particular attention was given to the detection of eventual transfer or side-reactions. However, polymer precipitation and transfer reaction to aluminum derivative were detrimental to monomer conversion, polymerization control, and limited polymer chain molar masses. The influence of reaction temperature and solvent on polymer precipitation and transfer reactions was studied and reaction conditions have been optimized leading to afford end-capped poly(glycidyl phthalimide) with narrow molar mass distributions. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2018. The experimental process involved the reaction of 2-(Oxiran-2-ylmethyl)isoindoline-1,3-dione(cas: 5455-98-1).Computed Properties of 5455-98-1

The Article related to anionic ringopening polymerization glycidylphthalimide phosphazene monomer mechanism, Chemistry of Synthetic High Polymers: Ring-Opening and Other Polymerizations and other aspects.Computed Properties of 5455-98-1

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

On December 31, 2017, Lv, Jiang-bo; Ma, Jing-zhi; Cheng, Kang; Chen, Chang; Hu, Jiang-huai; Zeng, Ke; Yang, Gang published an article.Computed Properties of 5455-98-1 The title of the article was Insights into phthalonitrile/epoxy blends modification system from non-competitive cure system based on alicyclic anhydride. And the article contained the following:

A series of polymer blends were prepared from 1,3-bis(3,4-dicyanophenoxy)benzene (3BOCN) and epoxy resin with Me tetrahydrophthalic anhydride as curing agent. The curing behavior and curing kinetics of the blends were studied by differential scanning calorimetry. The apparent activation energy of the blends with various contents of 3BOCN was higher than that of the blends without 3BOCN. A model experiment suggested that there is no obvious reaction between phthalonitrile and epoxy. The thermal and mech. properties of the polymer blends were evaluated. The polymer blends exhibit high storage modulus and char yield compared with the neat epoxy. The polymer blends show ductile fracture morphol. by SEM images. The experimental process involved the reaction of 2-(Oxiran-2-ylmethyl)isoindoline-1,3-dione(cas: 5455-98-1).Computed Properties of 5455-98-1

The Article related to phthalonitrile oligomeric plasticizer alicyclic anhydride cured epoxy blend property, Plastics Manufacture and Processing: Formulating Procedures and Compositions and other aspects.Computed Properties of 5455-98-1

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

On September 22, 2020, Harrier, Danielle D.; Kenis, Paul J. A.; Guironnet, Damien published an article.Computed Properties of 102-07-8 The title of the article was Ring-Opening Polymerization of Cyclic Esters in an Aqueous Dispersion. And the article contained the following:

Aqueous polymer dispersions are commodity materials produced on a multimillion-ton scale annually. Today none of these materials are biodegradable because the process by which they are made is not compatible with the synthesis of biodegradable polymers. Herein, we report a droplet microfluidic encapsulation strategy for protecting a water incompatible ring-opening polymerization (ROP) catalyst from the aqueous phase, yielding biodegradable polymer particles dispersed in water. Polymerization yields 300μm sized particles comprised of biodegradable poly(δ-valerolactone) with mol. weights up to 19.5 kg mol-1. The success of this approach relies on simultaneous precise control of the kinetics of polymerization, the rate of mass transfer, and fluid mechanics. The power of this methodol. was demonstrated by the synthesis of cross-linked polymer particles through the copolymerization of bis(ε-caprolactone-4-yl)propane and δ-valerolactone, producing cross-linked polymer particles with mol. weights reaching 65.3 kg mol-1. Overall, this encapsulation technique opens the door for the synthesis of biodegradable polymer latex and processable, biodegradable elastomers. The experimental process involved the reaction of 1,3-Diphenylurea(cas: 102-07-8).Computed Properties of 102-07-8

The Article related to ring opening polymerization cyclic ester aqueous dispersion microfluidic encapsulation, Chemistry of Synthetic High Polymers: Ring-Opening and Other Polymerizations and other aspects.Computed Properties of 102-07-8

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

On May 31, 2018, Urut, Gulsiye Ozturk; Aydin, Seher; Topkaya, Derya; Sahin, Elif; Alp, Serap published an article.COA of Formula: C10H11NO3 The title of the article was Synthesis, Spectroscopic Characterization and Polymerization Abilities of Blue and Green Light Emitting Oxazol-5-one Fluorophores. And the article contained the following:

New fluorescent thiophenyl group containing oxazol-5-one fluorophores of 3a (4-(3-thiophenylmethylene)-2-phenyloxazol-5-one), 3b (4-(3-thiophenylmethylene)-2-(4-tolyl)oxazol-5-one) and 3c (4-(3-thiophenylmethylene)-2-(4-nitrophenyl)oxazol-5-one) were synthesized and characterized. The newly synthesized oxazol-5-ones absorption and fluorescence characteristics were studied in some solvents of varying polarities. The heterocyclic chromophores were fluorescent, with two of them, 3a and 3b, emitting blue light, while the other one, 3c, emitting green light. The emission maxima of the derivatives varied between 415 and 572 nm according as the extent of conjugation and solvent polarity. As solvent polarity increased, 3c derivatives emission spectra displayed a large bathochromic shift, which revealed the considerable change of the dipole moment of the fluorescent structure because of an intramol. charge transfer interaction. Furthermore, oxazolones polymerization ability via the thiophenyl group linked to the oxazol-5-one heterocycle showed that copolymerization of 3a was achieved, but homopolymerization was not observed The experimental process involved the reaction of 2-(4-Methylbenzamido)acetic acid(cas: 27115-50-0).COA of Formula: C10H11NO3

The Article related to fluorophore green light emitting polymerization ability oxazolone, copolymer, fluorescence, homopolymer, oxazol-5-one, thiophenes, Chemistry of Synthetic High Polymers: Ring-Opening and Other Polymerizations and other aspects.COA of Formula: C10H11NO3

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

On May 26, 2017, Peters, Edward Norman; Na, Ying; Ma, Shuailei; Yang, Jian published a patent.Electric Literature of 5455-98-1 The title of the patent was Method for production of cured epoxy material and composite core for aluminum conductor composite core reinforced cable. And the patent contained the following:

A method of forming a cured epoxy material comprises reacting a phenylene ether oligomer with an anhydride hardener to form a first product, adding an epoxy resin to the first product to form a second product, and curing the second product. The method provides an improved balance of heat resistance and toughness relative to corresponding methods in which the phenylene ether oligomer is pre-reacted with the epoxy resin prior to addition of hardener, and in which all components are mixed simultaneously. The cured epoxy material can be used in the composite core of an aluminum conductor composite core reinforced cable. The experimental process involved the reaction of 2-(Oxiran-2-ylmethyl)isoindoline-1,3-dione(cas: 5455-98-1).Electric Literature of 5455-98-1

The Article related to oligophenylene ether anhydride hardener prereaction epoxy resin curing, aluminum conductor epoxy resin composite core reinforced cable, Plastics Manufacture and Processing: Formulating Procedures and Compositions and other aspects.Electric Literature of 5455-98-1

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

On April 19, 2022, Ma, Chao; Chen, Yan; Ren, Wen dong; Liu, Xing yu; Gu, Wen; Zhou, Hui li published an article.Application In Synthesis of 2-Chloroacetamide The title of the article was Performance Evaluation of Composite Antisalt Agents and the Antisalt Dynamics Simulation Mechanism. And the article contained the following:

The conventional ferrocyanide complex ([Fe(CN)6]4-) has been widely used as a scale inhibitor under mild conditions, but its oxidation at high temperature compromises the subsequent wastewater treatment processes. To conquer the inadequacies of [Fe(CN)6]4-, aminotriacetamide (NTA) was synthesized using chloroacetic acid as an initial material and its mol. structure was characterized using FT-IR spectroscopy, H-NMR, and TGA. NTA was exploited in combination with polyaspartic acid (PASP) and sodium dodecyl benzene sulfonate (SDBS) to prepare a high-performance antisalt composite, and the scaling inhibitor performance was evaluated. The results revealed that as the concentration of the antisalt composite increased from 0.5 to 1.2 weight %, the solubility and inhibition rate increased by 95.6 and 12.33%, resp., at 100°C. The results from mol. simulation evidenced that the order of binding energy between a unit mass of the salt inhibitor and sodium chloride crystal increased in the following order; SDBS > NTA > PASP. The deformation strength between the salt inhibitor and sodium chloride crystal increased as follows: NTA > PASP > SDBS. In addition, the antisalt composite mainly hampered salt precipitation through strong adsorptions arising from both the nitrogen atom of NTA and oxygen atom of SDBS with the sodium atom of sodium chloride crystals, and as a result, it not only altered the crystalline form of sodium chloride but also reduced the adsorption of sodium atoms and eventually improved the salt solubility The experimental process involved the reaction of 2-Chloroacetamide(cas: 79-07-2).Application In Synthesis of 2-Chloroacetamide

The Article related to composite antisalt dynamic simulation, Water: Composition and Properties Of Boiler Water and Other Industrial Waters and other aspects.Application In Synthesis of 2-Chloroacetamide

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

Waleed, Hadeer Q.; Csecsi, Marcell; Konyhas, Vivien; Boros, Zsanett R.; Viskolcz, Bela; Fejes, Zsolt; Fiser, Bela published an article in 2022, the title of the article was Aliphatic tertiary amine catalyzed urethane formation – a combined experimental and theoretical study.Application In Synthesis of 1,3-Diphenylurea And the article contains the following content:

A kinetic and mechanistic investigation of the alcoholysis of Ph isocyanate (PhNCO) using stoichiometric butan-1-ol (BuOH) in acetonitrile in the presence of different tertiary amine catalysts was performed. The reaction mechanisms in the absence and presence of exptl. applied catalysts were described by using the G3MP2BHandHLYP composite method. The apparent activation energies obtained from the calculations were in good agreement with the exptl. data (ΔΔE = <2 kJ mol-1). Both exptl. and theor. results proved the important effect of tertiary amine catalysts on urethane formation. These results can aid in polyurethane catalyst design and development. The experimental process involved the reaction of 1,3-Diphenylurea(cas: 102-07-8).Application In Synthesis of 1,3-Diphenylurea

The Article related to phenylisocyanate butanol tertiary amine alcoholysis kinetics mechanism, Physical Organic Chemistry: Addition, Elimination, and Substitution Reactions and other aspects.Application In Synthesis of 1,3-Diphenylurea

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

On March 15, 2007, Narender, T.; Shweta, S.; Tiwari, P.; Reddy, K. Papi; Khaliq, T.; Prathipati, P.; Puri, A.; Srivastava, A. K.; Chander, R.; Agarwal, S. C.; Raj, K. published an article.Category: amides-buliding-blocks The title of the article was Antihyperglycemic and antidyslipidemic agent from Aegle marmelos. And the article contained the following:

The plant Aegle marmelos belongs to the family of Rutaceae. From the leaves of A. marmelos an alkaloidal-amide, Aegeline, was isolated and found to have antihyperglycemic activity as evidenced by lowering the blood glucose levels by 12.9% and 16.9% at 5 and 24 h, resp., in sucrose challenged streptozotocin induced diabetic rats (STZ-S) model at the dose of 100 mg/kg body weight Aegeline 2 has also significantly decreased the plasma triglyceride (Tg) levels by 55% (P < 0.001), total cholesterol (TC) by 24% (P < 0.05), and free fatty acids (FFA) by 24%, accompanied with increase in HDL-C by 28% and HDL-C/TC ratio by 66% in dyslipidemic hamster model at the dose of 50 mg/kg body weight The reasonable mapping of compound 2 to validated pharmacophoric hypothesis and 3D QSAR model with an estimated activity (283 nM) suggest that the compound 2 might be a β3-AR agonist. The experimental process involved the reaction of N-(2-Hydroxy-2-(4-methoxyphenyl)ethyl)cinnamamide(cas: 456-12-2).Category: amides-buliding-blocks

The Article related to aegle alkaloid aegeline antidyslipidemic antihyperglycemic, Pharmacology: Effects Of Agents For Treating Metabolic and Endocrine Disorders and other aspects.Category: amides-buliding-blocks

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