Tag: 100-200

Mohammadi, Ali A.; Taheri, Salman; Askari, Saber published an article in 2017, the title of the article was One-Pot Pseudo Five-Component Synthesis of Some New bis(Quinazolinon-4(1H)-one) Derivatives.Electric Literature of 707-07-3 And the article contains the following content:

A versatile pathway for the synthesis of novel bis(quinazolinon-4(1H)-one) derivatives I (R1 = H, CH3, C6H5, etc.; X = CH2CH2, C6H4) by one-pot pseudo five-component condensation of two mols. isatoic anhydrides, two mols. orthoesters R1C(OR2)3 (R2 = CH3, CH2CH3) and diamines H2NXNH2 in high yields and short reaction time is described. The work-up is easy and the products are obtained in good-to-excellent yields and high purity. The experimental process involved the reaction of (Trimethoxymethyl)benzene(cas: 707-07-3).Electric Literature of 707-07-3

The Article related to bisquinazolinonone preparation regioselective, isatoic anhydride orthoester diamine pseudo multicomponent condensation, Heterocyclic Compounds (More Than One Hetero Atom): Pyrimidines and Quinazolines and other aspects.Electric Literature of 707-07-3

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

On October 22, 1997, Bessard, Ives; Stucky, Gerhard published a patent.Product Details of 121129-31-5 The title of the patent was Process for the preparation of substituted pyrimidines. And the patent contained the following:

Pyrimidines I [R1 = OCHR4COR5, 2-oxo-3-tetrahydrofuryl, 2-oxo-3-tetrahydropyranyl, (un)substituted Ph, pyridyl; R2, R3 = H, alkyl, alkoxy, (un)substituted NH2; R4 = H, alkyl, aryl, aralkyl, CO2H, acyl, alkoxycarbonyl; R5 = OH, alkoxy, aryloxy, alkyl] were prepared by treating I [R1 = halogen] with HOR1 in presence of a sulfinate in a one- or two-step reaction. Thus, 2-chloro-4,6-dimethoxypyrimidine was treated with Me3CCH(OH)CO2Me and MeSO2Na to give 82.7% I [R1 = OCH(CMe3)CO2Me, R2, R3 = OMe]. The experimental process involved the reaction of Methyl 2-hydroxy-3,3-dimethylbutanoate(cas: 121129-31-5).Product Details of 121129-31-5

The Article related to alkoxypyrimidine preparation, halopyrimidine alkoxylation sulfinate, pyrimidine halo alkoxylation sulfinate, Heterocyclic Compounds (More Than One Hetero Atom): Pyrimidines and Quinazolines and other aspects.Product Details of 121129-31-5

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

Bhat, Subrahmanya Ishwar; Das, U. K.; Trivedi, Darshak R. published an article in 2015, the title of the article was An Efficient Three-component, One-pot Synthesis of Quinazolines under Solvent-free and Catalyst-free Condition.Computed Properties of 707-07-3 And the article contains the following content:

An efficient green protocol for the synthesis of quinazolines in the absence of solvent and catalyst was developed. 2,4-disubstituted quinazolines were synthesized from three-component one-pot reactions of 2-aminoaryl ketones, orthoesters, and ammonium acetate. The present method had advantages of operational simplicity, substrate generality, clean reaction, high yields (76-94%), and moderate reaction time. The plausible mechanism of the reaction was proposed based on the spectral characterization and single crystal X-ray anal. of isolated intermediate. The experimental process involved the reaction of (Trimethoxymethyl)benzene(cas: 707-07-3).Computed Properties of 707-07-3

The Article related to aminoaryl ketone orthoester ammonium acetate three component reaction, quinazoline preparation green chem, Heterocyclic Compounds (More Than One Hetero Atom): Pyrimidines and Quinazolines and other aspects.Computed Properties of 707-07-3

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

On April 30, 2022, Pekel, Ayse Gizem; Kurtulbas, Ebru; Toprakci, Irem; Sahin, Selin published an article.Formula: C8H14O4 The title of the article was Menthol-based deep eutectic solvent for the separation of carbamazepine: reactive liquid-liquid extraction. And the article contained the following:

Abstract: Menthol-based deep eutectic liquid has been used for the reactive liquid-liquid extraction of the carbamazepine from its aqueous solution after it was synthesized by heating and mixing. Di-Et succinate was used as diluent, while deep eutectic liquid was the extractant. Several deep eutectic liquids containing menthol and carboxylic acids (acetic acid and formic acid) with different molar ratios (1/1 and 1/2) were composed. pH, d., viscosity, and refractive index values of the designed deep eutectic liquids were measured. Furthermore, Fourier transform IR spectroscopy method was also applied into the deep eutectic liquids for characterization. Deep eutectic liquid increased the extraction performance of the diluent from 11 to 36% comparing to the untreated one. The proposed system (menthol/acetic acid with 1/1 of molar ratio) has extracted more than 90% of the target pharmaceutical compound from its aqueous solution in 30 min. The concentration of extractant in the diluent, initial carbamazepine content in aqueous media, and ionic intensity have influenced the reactive liquid-liquid extraction Depending on the thermodn. outcome, the transfer process of carbamazepine from aqueous phase into hydrophobic phase is an endothermic and spontaneous in nature. It has been also observed to be a separation process with a structure that tends to be irregular. The experimental process involved the reaction of Diethyl succinate(cas: 123-25-1).Formula: C8H14O4

The Article related to menthol eutectic solvent carbamazepine liquid extraction, Phase Equilibriums, Chemical Equilibriums, and Solutions: Nonelectrolytic Solutions and other aspects.Formula: C8H14O4

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

On April 18, 2016, Kim, Chung Han; Lee, Ju Hyeong published a patent.Application In Synthesis of Ethyl indolizine-1-carboxylate The title of the patent was Aromatic compounds as phosphorescent electroluminescent hosts for organic light emitting devices. And the patent contained the following:

The present invention relates to a novel compound with excellent light emitting ability and an organic electroluminescence device with improved characteristic such as life span, drive voltage, luminous efficiency by including one or more these organic compounds represented by a general chem. formula I, where R1-R2 or R2-R3 or R4-R5 or R6-R7 binds to dot portion of the structure represented by a chem. formula II to form a fused ring, where X1 = O, S, C(Ar1) etc. and R1-11 excluding the one to form the fused ring can be H, halogen, cyano, C1-C40 alkyl etc. and Ar1 = C1-C40 alkyl, C2-C40 alkenyl, C2-C40 alkynyl etc. and R1-11, Ar1 can have substitution groups. The experimental process involved the reaction of Ethyl indolizine-1-carboxylate(cas: 93476-46-1).Application In Synthesis of Ethyl indolizine-1-carboxylate

The Article related to organic electroluminescence device host phosphorescent, Optical, Electron, and Mass Spectroscopy and Other Related Properties: Luminescence and other aspects.Application In Synthesis of Ethyl indolizine-1-carboxylate

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

On July 7, 1993, Kirby, Gordon W.; Nazeer, Muhammad published an article.COA of Formula: C7H14O3 The title of the article was Asymmetric induction in the Diels-Alder reactions of α-hydroxy acylnitroso compounds. And the article contained the following:

The hydroxamic acids RCH(OR’)CONHOH (R = Ph, R’ = H, Me; R = cyclohexyl, R’ = H; R = CMe3, R’ = H), derived from a series of α-hydroxy acids, have been oxidized with periodate to form transient, chiral acyl nitroso compounds RCH(OR’)CONO, which were trapped in situ with cyclopentadiene and cyclohex-1,3-diene to give mixtures of diastereoisomeric, Diels-Alder cycloadducts I (n = 1, 2), resp. Cycloaddition at 0°C occurred with moderate stereoselectivity, e.g., both the mandeloyl nitroso compound with cyclopentadiene and the tert-butylglycoloyl nitroso compound with cyclohexadiene gave ca. 5:1 mixtures of diastereoisomers. Much higher diastereoselectivities were observed at -78°C. The mandeloyl nitroso compound, which can form an intramol. hydroxy and nitroso groups, showed higher stereoselectivities than its O-Me ether. The major cycloadduct II of the (S)-mandeloyl nitroso compound III and cyclohexadiene was degraded to the bicyclic oxazine of known absolute configuration. Formation of II as the major product is consistent with preferential endo addition of the hydrogen bonded III from the face anti to the Ph group. The experimental process involved the reaction of Methyl 2-hydroxy-3,3-dimethylbutanoate(cas: 121129-31-5).COA of Formula: C7H14O3

The Article related to diels alder asym hydroxy acyl nitroso, Heterocyclic Compounds (More Than One Hetero Atom): Oxazines (Including Morpholine) and other aspects.COA of Formula: C7H14O3

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

Yan, Junjie; Wang, Rongrong; Pan, Donghui; Yang, Runlin; Xu, Yuping; Wang, Lizhen; Yang, Min published an article in 2016, the title of the article was Thiolactone-maleimide: a functional monomer to synthesize fluorescent aliphatic poly(amide-imide) with excellent solubility via in situ PEGylation.Synthetic Route of 6038-19-3 And the article contains the following content:

Fluorescent poly(amide-imide)s are promising materials for use in photonics due to their controllable optical properties and excellent flexibility. Although unconventional fluorescent polymers were flourishing recently, the fluorescence of aliphatic poly(amide-imide)s has never been realized until now. Their poor solubility and intolerance to reactive groups during synthesis prohibit access for the modification of poly(amide-imide)s. Here, the authors synthesize a functional thiolactone-maleimide monomer via Cu(II)-catalyzed azide alkyne cycloaddition and employ a strategy combining aminolysis of thiolactones and amine-maleimide Michael addition for the synthesis of fluorescent aliphatic poly(amide-imide)s with 2-aminosuccinimide fluorophores. Also, in situ generated thiols enable the poly(amide-imide)s to undergo facile PEGylation via a thiol-methacrylate Michael addition reaction to accomplish excellent solubility in organic solvents and in H2O. The experimental process involved the reaction of 3-Aminodihydrothiophen-2(3H)-one hydrochloride(cas: 6038-19-3).Synthetic Route of 6038-19-3

The Article related to thiolactone maleimide polyamide imide triazole containing fluorescence, polyamide polyimide pegylation michael addition solubility improved, Chemistry of Synthetic High Polymers: Organic Condensation and Step Polymerization and other aspects.Synthetic Route of 6038-19-3

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

Le Goff, Ronan; Martel, Arnaud; Sanselme, Morgane; Lawson, Ata Martin; Daich, Adam; Comesse, Sebastien published an article in 2015, the title of the article was Simple Access to Highly Functional Bicyclic γ- and δ-Lactams: Origins of Chirality Transfer to Contiguous Tertiary/Quaternary Stereocenters Assessed by DFT.COA of Formula: C10H14O3 And the article contains the following content:

This paper describes the synthesis of both polysubstituted oxazolo-pyrrolidinones and -piperidinones by a domino process. The methodol. is based on the reaction between hydroxyl halogenoamides and Michael acceptors, which leads efficiently to bicyclic lactams. The process is compatible with unsym. electron-withdrawing groups on the Michael acceptor, which allows the formation of two contiguous and fully controlled tertiary and quaternary stereocenters. In the case of tetrasubstituted Michael acceptors, two adjacent quaternary stereocenters are formed in good yield. Starting from (R)-phenylglycinol derived amides results in the formation of enantio-enriched bicyclic lactams in low to good yields and with high levels of stereoselectivity, thus greatly increasing the scope and interest of this strategy. The origins of chirality transfer and diastereoselectivity were studied by DFT calculations and have been attributed to a kinetic control in one of the last two steps of the reaction sequence. This selectivity is dependent upon both the substituents on the Michael acceptor and the sodium cation chelation. The experimental process involved the reaction of (Trimethoxymethyl)benzene(cas: 707-07-3).COA of Formula: C10H14O3

The Article related to bicyclic lactam chirality transfer dft m06, dft, bicyclic lactams, diastereoselectivity, domino reactions, quaternary stereocenter, Physical Organic Chemistry: Ring Formation, Cleavage, Enlargement, and Contraction and other aspects.COA of Formula: C10H14O3

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

Espeel, Pieter; Celasun, Sensu; Omurtag, Pinar Sinem; Martens, Steven; Du Prez, Filip E. published an article in 2017, the title of the article was Responsive Thiolactone-Derived N-Substituted Poly(Urethane-Amide)s.Quality Control of 3-Aminodihydrothiophen-2(3H)-one hydrochloride And the article contains the following content:

AB’ type monomers containing a thiolactone unit and vinyl ether moiety have been prepared with high yields. Aminolysis of the thiolactone moiety generates the corresponding thiol in situ, and upon UV-irradiation, radical polyaddition occurs in the same medium, yielding linear poly(amide-urethane)s with different side chain residues and (Poly(Ethylene Oxide)) PEO-like backbone. Moreover, these unique polymers feature lower critical solution temperature behavior in water. Systematic modification of the responsive polymers reveals the influence of the variation of the side chains and the backbone structure on the corresponding solubility properties. In selected cases, multiresponsive polymers have been developed, which also respond to pH and metal concentration The experimental process involved the reaction of 3-Aminodihydrothiophen-2(3H)-one hydrochloride(cas: 6038-19-3).Quality Control of 3-Aminodihydrothiophen-2(3H)-one hydrochloride

The Article related to responsive thiolactone polyurethaneamide, aminolysis, polyaddition, responsive polymers, thiol-ene, thiolactone, Chemistry of Synthetic High Polymers: Organic Condensation and Step Polymerization and other aspects.Quality Control of 3-Aminodihydrothiophen-2(3H)-one hydrochloride

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

On October 20, 2016, Frank, Daniel; Espeel, Pieter; Claessens, Sven; Mes, Edwin; Du Prez, Filip E. published an article.Product Details of 6038-19-3 The title of the article was Synthesis of thiolactone building blocks as potential precursors for sustainable functional materials. And the article contained the following:

A library of multifunctional monomers from homocysteine thiolactone and thioparaconic acid were synthesized using straightforward chem. routes. A generic protocol was developed, leading to multi-gram amounts of the targeted compounds and enabling up-scaling experiments for promising compounds in the area of functional coatings. Aspects considered during selection of targets and synthesis pathways included functional diversity, expected phys. properties, sustainability and com. availability of reagents, as well as feasibility to achieve an industrially relevant process. Trends were observed in yield, phys. properties and chem. behavior. The experimental process involved the reaction of 3-Aminodihydrothiophen-2(3H)-one hydrochloride(cas: 6038-19-3).Product Details of 6038-19-3

The Article related to thiolactone building block potential precursor sustainable functional material, Chemistry of Synthetic High Polymers: Monomers and Reagents Used In Polymerization and other aspects.Product Details of 6038-19-3

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