Category: oxazolidines

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 6704-31-0, Name is Oxetan-3-one, formurla is C3H4O2. In a document, author is Pal’chikov, V. A., introducing its new discovery. Recommanded Product: 6704-31-0.

2-(4-nitrophenyl)oxirane amino derivatives in heterocyclization reactions

Reactions of 2-amino-1-(4-nitrophenyl)ethanol with various electrophilic reagents led to the formation of oxazaheterocycles (1,3-oxazolidin-2-one, 1,3-oxazolidine, morpholin-2-, -3-one, and -2,3-dione). In reactions of 2-{(bicyclo[2.2.1]hept-5-en-2-ylmethyl)amino}-1-(4-nitrophenyl)ethan-1-ol with carbonyldiimidazole, oxalyl chloride, benzaldehyde, and formaldehyde the corresponding derivatives of 1,3-oxazolidin-2- one, morpholin-2,3-dione, and 1,3-oxazolidine were obtained.

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Reference:
Oxazolidine – Wikipedia,
,Oxazolidine | C3H7NO – PubChem

 

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 16251-45-9, Name is (4S,5R)-4-Methyl-5-phenyloxazolidin-2-one, formurla is C10H11NO2. In a document, author is La Ferla, Barbara, introducing its new discovery. Recommanded Product: 16251-45-9.

Pyranoid Spirosugars as Enzyme Inhibitors

Background: Pyranoid spirofused sugar derivatives represent a class of compounds with a significant impact in the literature. Under the structural point of view, the rigidity inferred by the spirofused entity has made these compound object of interest mainly as enzymatic inhibitors, in particular of carbohydrate processing enzymes among which glycogen phosphorylase and sodium glucose co-transporter 2, important target enzymes for diverse pathological states. Most of the developed compounds present the spirofused entity at the C1 position of the sugar moiety, nevertheless spirofused entities can also be found at other sugar ring positions. The main spirofused entities encountered are spiroacetals/thioacetals, spiro-hydantoin and derivatives, spiro-isoxazolines, spiro-aminals, spiro-lactams, spiro-oxathiazole and spiro-oxazinanone, but also other are present. Objectives: The present review focuses on the most explored synthetic strategies for the preparation of this class of compounds, classified according to the position and structure of the spirofused moiety on the pyranoid scaffold. Moreover, the structures are correlated to their main biological activities or to their role as chiral auxiliaries. Conclusion: It is clear from the review that, among the different derivatives, the spirofused structures at position C1 of the pyranoid scaffold are the most represented and possess the most relevant enzymatic inhibitor activities. Nevertheless, great efforts have been devoted to the introduction of the spirofused entity also in the other positions, mainly for the preparation of biologically active compounds but also for the synthesis of chiral auxiliaries useful in asymmetric reactions; examples of such auxiliaries are the spirofused chiral 1,3-oxazolidin-2-ones and 1,3-oxazolidine-2-thiones.

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Reference:
Oxazolidine – Wikipedia,
,Oxazolidine | C3H7NO – PubChem

 

In an article, author is Huang, Hai, once mentioned the application of 90319-52-1, Name is (R)-4-Phenyloxazolidin-2-one, molecular formula is C9H9NO2, molecular weight is 163.1733, MDL number is MFCD00192393, category is oxazolidines. Now introduce a scientific discovery about this category, Safety of (R)-4-Phenyloxazolidin-2-one.

Generation of Oxazolidine-2,4-diones Bearing Sulfur-Substituted Quaternary Carbon Atoms by Oxothiolation/Cyclization of Ynamides

A novel method for metal-free oxothiolation of ynamides to construct oxazolidine-2,4-diones bearing sulfur-substituted quaternary carbon atoms has been developed. It represents a rare C-O bond cleavage of ynamides, as well as a facile and tandem approach for the formation of C-O, C-S, and C-Cl bonds. This redox-neutral protocol can be applied to the synthesis of multisubstituted oxazolidine-2,4-diones with good chemoselectivity and good yields of isolated products under mild conditions.

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Oxazolidine – Wikipedia,
,Oxazolidine | C3H7NO – PubChem

 

Application of 34052-90-9, As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 34052-90-9, Name is 1,3-Bis(4,5-dihydrooxazol-2-yl)benzene, SMILES is C1(C2=NCCO2)=CC=CC(C3=NCCO3)=C1, belongs to oxazolidines compound. In a article, author is Turkiewicz, Anna, introduce new discover of the category.

Laboratory research on selection of effective antimicrobial substances and H2S scavengers used in drilling fluid technology and underground gas storage

The article discusses the results of biocide tests for application in the oil and gas industry. This research was carried out with the use of active agents, such as: nano-silver particle suspension, and the solutions of two antimicrobial substances. The second part of the laboratory study was testing H2S scavengers. Preparations recommended for drilling fluid technology and underground gas storage facilities were used. It should be noted that biogenic processes can largely cause the phenomenon of degradation of drilling fluids. As a result of these processes, drilling mud gets contaminated and loses its technological and rheological properties, making it incapable of fulfilling its role during drilling operations. All the tested scavengers were triazine products. In general, this agent in a solution acts in two ways. The application of triazine derivatives (three isomeric forms) is a good means of eliminating microorganisms from drilling fluid or formation water. These active agents have strong antimicrobial properties. On the other hand, these substances can also neutralise the hydrogen sulphide. The research enaNafta-Gabled determination of the effectiveness of the antimicrobial activity of the following substances: nano-silver particles, nano-Ag in combination with oxazolidine, and nano-Ag with a combination with glyoxal. The results of laboratory tests also allowed for a comparison of the efficiency of the action of individual H2S scavengers. The first two tests were conducted in the range of nano-silver particles concentrations from 0.05 to 0.6% vol., while the next tests (i.e. with the application of nano-Ag/biocide) were carried out in the concentration range from 0.02 to 0.5% vol. Bacterial or fungal colony units (CFU) were used as a reference method for assessing the microbial water quality. The formation water came from a facility of underground gas storage (collective water – i.e. water from separators). In parallel tests, the number of bacteria was also determined in the contaminated water-based polymer drilling mud. The number of microorganisms in the tested samples was compared with the CFUs in control samples without biocide. The described research is part of a complex study intended to conduct biomonitoring of deposit environments and to eliminate bacterial contamination and sulphating of hydrocarbons, especially in stored natural gas. Industrial operations in this field make it possible to maintain the correct quality of stored gas and contribute to the improvement of exploitation. Selected effective substances will be used in the future in industry to reduce the content of biogenic hydrogen sulphide and to decrease a number of harmful microorganisms in drilling muds and formation waters.

Application of 34052-90-9, Consequently, the presence of a catalyst will permit a system to reach equilibrium more quickly, but it has no effect on the position of the equilibrium as reflected in the value of its equilibrium constant.I hope my blog about 34052-90-9 is helpful to your research.

Reference:
Oxazolidine – Wikipedia,
,Oxazolidine | C3H7NO – PubChem

 

Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology. 6704-31-0, Name is Oxetan-3-one, molecular formula is , belongs to oxazolidines compound. In a document, author is Kaur, Damanjit, Safety of Oxetan-3-one.

Insight into the acidic behavior of oxazolidin-2-one, its thione and selone analogs through computational techniques

Deprotonation thermochemistry of Oxazolidin-2-one (OXA), Oxazolidine-2-thione (OXA-S), and Oxazolidine-2-selone (OXA-Se) has been studied in order to find the most acidic site and relative acidities of these heterocyclics at various sites. The deprotonation enthalpies at MP2/6-311++G**//MP2/6-31+G* and B3LYP/6-31+G* levels, while the free energies for deprotonation process and pKa values at B3LYP/6-31+G* level both in gas and aqueous phase (using PCM continuum model) of the anions of the three heterocyclics have been computed at 298 K. Calculated aqueous phase pKa values of OXA vary by similar to 6-7 units from the experimental aqueous phase pKa values of OXA and its derivatives. The deprotonation at the nitrogen is favored in OXA over the carbon atoms in contrast to the OXA-S and OXA-Se where in the deprotonation at the carbon attached to the nitrogen is most preferred. Deprotonation at this carbon induces an important C-O bond rupture in OXA-S and OXA-Se promoting an energetically favored ring-opening process. The finding offers a rare case when C-H acidity is able to dominate over the N-H acidity. In order to explain the relative stabilities, relative acidities and deprotonation enthalpies various characteristics of these molecules as well as their anions such as molecular electrostatic potential surface (MEP), frontier molecular orbital (FMO) features, chemical hardness, softness have been governed. The three dimensional MEP maps and HOMO-LUMO orbitals encompassing these molecules yield a reliable relative stability and reactivity (in terms of acidity) map displaying the most probable regions for deprotonation. The differential distribution of the electrostatic potential over the neutral and anionic species of OXA, OXA-S, and OXA-Se molecules is authentically reflected by HOMO-LUMO orbitals and NBO charge distribution analysis. The lone pair occupancies, second order delocalization energies for orbital interactions and the distribution of atomic charges over the entire molecular framework as obtained from natural bond orbital (NBO) analysis are found to faithfully replicate the predictions from the MEP maps and HOMO-LUMO band gaps in respect of explaining the relative stabilities and acidities in most of the cases. Good linear correlations have been obtained between HOMO-LUMO gap and pKa values in the aqueous phase for OXA and OXA-S molecules.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 6704-31-0, in my other articles. Safety of Oxetan-3-one.

Reference:
Oxazolidine – Wikipedia,
,Oxazolidine | C3H7NO – PubChem

 

Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. In an article, author is Chun, Jiong, once mentioned the application of 84793-24-8, Name is Ethyl (S)-2-[(S)-4-Methyl-2,5-dioxo-3-oxazolidinyl]-4-phenylbutanoate, molecular formula is C16H19NO5, molecular weight is 305.3258, MDL number is MFCD00272296, category is oxazolidines. Now introduce a scientific discovery about this category, SDS of cas: 84793-24-8.

Synthesis of new ceramide analogues with allene in the sphingoid backbone

Ceramide is an important sphingolipid which can mediate a diverse range of biological activities. New ceramide analogues with an allene group in the sphingoid backbone were synthesized. The synthesis of the key intermediates involved the LiAlH(4)reduction of oxazolidine intermediates via a directed reduction-elimination reaction. Hydrolysis of the oxazolidine, liberation of the amino group, andN-acylation provided new ceramide analogues. These new analogues may provide new resources to study their bioactivities and the structure-activity relationship.

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Oxazolidine – Wikipedia,
,Oxazolidine | C3H7NO – PubChem

 

In an article, author is Szaloki, Gyoergy, once mentioned the application of 99395-88-7, Name is (S)-4-Phenyloxazolidin-2-one, molecular formula is C9H9NO2, molecular weight is 163.1733, MDL number is MFCD00043396, category is oxazolidines. Now introduce a scientific discovery about this category, Recommanded Product: (S)-4-Phenyloxazolidin-2-one.

A Simple Molecule-Based Octastate Switch

Dithienylethene oxazolidine hybrid system connected through an isomerizable double bond exists under eight molecular states on demand. Combinations of electrocyclization of dithienylethene, Z/E isomerization and acidbase oxazolidine change cause selective addressabilities. Two intricate gated photochromic performances allow the execution of an 8-step molecular switch, which renders this molecular system the most complex known up to date.

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Oxazolidine – Wikipedia,
,Oxazolidine | C3H7NO – PubChem

 

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 34052-90-9, Name is 1,3-Bis(4,5-dihydrooxazol-2-yl)benzene, molecular formula is C12H12N2O2. In an article, author is Mayans, Julia,once mentioned of 34052-90-9, COA of Formula: C12H12N2O2.

Chiral Oxazolidine Complexes Derived from Phenolic Schiff Bases

Schiff bases derived from pyridyl- or salicyl-aldehydes and aminoalcohols can evolve to heterocyclic oxazolidines, which in the presence of cations allow the formation of uncommon coordination compounds. In this work, we report new Ni-II and mixed valence Mn-II/Mn-IV complexes derived from pyridyl oxazolidines and the unprecedented characterization of enantiomerically pure oxazolidines derived from the condensation of o-vanillin with phenylglycinol in the presence of NiII cations. The different reactivity of the pyridinic or phenolic Schiff bases has been compared, and the new systems have been structurally, optically, and magnetically characterized.

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Reference:
Oxazolidine – Wikipedia,
,Oxazolidine | C3H7NO – PubChem

 

Related Products of 84793-24-8, As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 84793-24-8, Name is Ethyl (S)-2-[(S)-4-Methyl-2,5-dioxo-3-oxazolidinyl]-4-phenylbutanoate, SMILES is O=C(OCC)[C@@H](N([C@H]1C)C(OC1=O)=O)CCC2=CC=CC=C2, belongs to oxazolidines compound. In a article, author is Cui, Qianling, introduce new discover of the category.

Thermosensitive Behavior of Poly(ethylene Glycol)-Based Block Copolymer (PEG-b-PADMO) Controlled via Self-Assembled Microstructure

Stimuli-responsive, well-defined diblock copolymers (PEG-b-PADMO) comprising poly(ethylene glycol) (PEG, DP (degree of polymerization) = 45) as the hydrophilic and temperature-sensitive part and poly(N-acryloyl-2,2-dimethyl-1,3-oxazolidine) (PADMO, DP = 18-47) as the hydrophobic and acid-labile part self-assembled in water into spherical micelles with high aggregation number. The micellar structures and thermally induced phase transitions of the copolymers were investigated with (1)H NMR spectroscopy, light scattering, microscopy, turbidimetry, and fluorescence techniques. Thermoresponsive phase transitions of the copolymers in water were controlled via formation of core shell-type micelles with densely compact PEG corona. Their lower critical solution temperatures (LCSTs) were modulated within the range 40-72 degrees C by varying PADMO block length. This unusually low LCST was attributed to the densely packed PEG structure in the polymer micelles, which resulted in strong n-clustering attractive interactions and insufficient hydration of PEG chains in the shell and greatly enhanced the thermosensitivity. The LCST behavior can also be modulated by partial acid hydrolysis of PADMO segments through the resulting change of hydrophobicity.

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Reference:
Oxazolidine – Wikipedia,
,Oxazolidine | C3H7NO – PubChem

 

Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like 84793-24-8, Name is Ethyl (S)-2-[(S)-4-Methyl-2,5-dioxo-3-oxazolidinyl]-4-phenylbutanoate. In a document, author is Mohamed, Slim Hadj, introducing its new discovery. Quality Control of Ethyl (S)-2-[(S)-4-Methyl-2,5-dioxo-3-oxazolidinyl]-4-phenylbutanoate.

Assessing the Structure of Octastate Molecular Switches Using H-1 NMR Density Functional Theory Calculations

Density functional theory calculations are used to reveal the relationships between the structures, energies, and NMR signatures of an octastate molecular switch composed of a dithienylethene (DTE) unit covalently linked to an indolino[2,1-b]oxazolidine (BOX) moiety through an ethylenic junction. Both the DTE and BOX moieties can adopt open or closed forms. The ethylenic junction can be Z or E, but the latter has been confirmed to be, by far, more stable than the former for all BOX/DTE combinations. In addition, when the DTE is open, the two thienyl units can fold to form parallel conformers, by opposition to the antiparallel or unfolded conformers. Usually parallel conformers present a higher energy than the antiparallel ones, but in the case of compound 2 having a bulky substituent (R = pPh-SMe) on the terminal thienyl group, the enthalpy of one conformer is very close (1-2 kJ mol(-1)) to that of the most stable antiparallel one, making photocyclization less efficient. These conformational differences and the presence of parallel DTE forms have been substantiated by analyzing experimental H-1 NMR chemical shifts in light of their calculated values. These H-1 NMR chemical shift calculations led to the following statements: (i) Going from state I (DTE open, BOX closed) to state II (both DTE and BOX are open) the H-8 proton of compound 1 (R = Me) is deshielded by similar to 0.15 ppm. (ii) The deshielding of H-8 proton of compound 2 is larger and attains 0.41 ppm whereas H-7 is more shielded by 0.11 ppm. (iii) Then, going from compound 1 to compound 2 leads to deshielding of both H-7 and H-8 protons. As a consequence, the difference of photochromism gating efficiency among compounds 1, 2, and 3 (R = pPh-OMe) can be attributed to the stabilization of parallel conformer due to an establishment of an intramolecular interaction with BOX opening.

I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 84793-24-8 help many people in the next few years. Quality Control of Ethyl (S)-2-[(S)-4-Methyl-2,5-dioxo-3-oxazolidinyl]-4-phenylbutanoate.

Reference:
Oxazolidine – Wikipedia,
,Oxazolidine | C3H7NO – PubChem