Heterocyclic Building Blocks-Oxazolidine

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. 34052-90-9, Name is 1,3-Bis(4,5-dihydrooxazol-2-yl)benzene, formurla is C12H12N2O2. In a document, author is Catalano, Alessia, introducing its new discovery. HPLC of Formula: C12H12N2O2.

Facile Routes for the Preparation of 3,4-Disubstituted 1,3-Oxazolidines and 1,2,5-Trisubstituted Imidazolidin-4-ones

Facile, alternative synthetic routes to (RS)-, (R)-, and (S)-3-benzyl-N-(2,6-dimethylphenyl)-1,3-oxazolidine-4-carboxamides (6), a chiral oxazolidine derivative of tocainide, are reported. The synthetic routes described herein also afforded (RS)-, (R)-, and (S)-11, which present the imidazolidin-4-one core and belong to a class of compounds interesting for their biological activities. All the final compounds and intermediates were fully characterized. Enantiomeric excesses of homochiral 6 and 11 were determined by capillary electrophoresis analysis using 2-hydroxypropyl-beta-cyclodextrin or highly sulfated gamma-cyclodextrin as chiral selectors.

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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.

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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

 

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

 

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

 

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 16251-45-9, Name is (4S,5R)-4-Methyl-5-phenyloxazolidin-2-one, SMILES is O=C1O[C@H](C2=CC=CC=C2)[C@H](C)N1, in an article , author is Gonda, Timea, once mentioned of 16251-45-9, Name: (4S,5R)-4-Methyl-5-phenyloxazolidin-2-one.

Stereoselective synthesis and application of tridentate aminodiols derived from (+)-pulegone

A library of tridentate aminodiols, derived from naturally occurring (R)-(+)-pulegone, was synthesized and applied as chiral catalysts in the addition of diethylzinc to benzaldehyde. The reduction of pulegone furnished pulegol, which was transformed into allylic trichloroacetamide via Overman rearrangement of the corresponding trichloroacetimidate. The protected enamine was subjected to dihydroxylation with OsO4/NMO system resulting in a 1:1 mixture of (1R,2R,4R)- and (1S,2S,4R)-aminodiol diastereomers. After the removal of the trichloroacetyl protecting groups, the obtained primary aminodiols were transformed into secondary ones. The regioselectivity of the ring closure of the N-benzyl substituted aminodiols with formaldehyde was investigated resulting in both the 1,3-oxazine and oxazolidine rings. The tautomerism of the spiro and fused ring systems was observed and its mechanism was studied by detailed DFT analysis by employing an IEFPCM solvent model to provide a more realistic representation of the experimental conditions. The obtained potential catalysts were applied to the reaction of benzaldehyde and diethylzinc with moderate to good enantioselectivity (up to 90% ee). (C) 2016 Elsevier Ltd. All rights reserved.

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

 

84793-24-8, Name is Ethyl (S)-2-[(S)-4-Methyl-2,5-dioxo-3-oxazolidinyl]-4-phenylbutanoate, molecular formula is C16H19NO5, Computed Properties of C16H19NO5, belongs to oxazolidines compound, is a common compound. In a patnet, author is Kasza, Patryk, once mentioned the new application about 84793-24-8.

Fluorescent triazolyl spirooxazolidines: Synthesis and NMR stereochemical studies

Carbon-heteoratom chemistry is a method of choice for rapid construction of complex molecules. In the recent decade, its various applications flourished thanks to the click chemistry approach. Herein, we use a combination of C-X bond formation reactions to complete the synthesis of 1,2,3-triazolyl spirooxazolidines, bearing the fluorenylmethoxycarbonyl (fmoc) substituent. Thanks to the application of 2D-NMR spectroscopic methods and a multilevel computational approach, including a medicinal chemistry – inspired conformational search, PM7 semiempirical and DFT-based geometry optimization finalized with DFT-GIAO NMR shielding constant calculation, we were able to investigate the conformational space and assign cis/trans configuration in complex NMR spectra. For the obtained fmoc derivatives we recorded UV-VIS absorption and emission spectra. The obtained compounds contain pharmacophoric groups characteristic for endocannabinoid system modulators- CB1 receptor ligands or FAAH inhibitors. (C) 2019 Elsevier B.V. All rights reserved.

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

 

Chemistry is traditionally divided into organic and inorganic chemistry. The former is the study of compounds containing at least one carbon-hydrogen bonds. 90319-52-1, Name is (R)-4-Phenyloxazolidin-2-one, molecular formula is C9H9NO2, belongs to oxazolidines compound, is a common compound. In a patnet, author is Zaytseva, Elena V., once mentioned the new application about 90319-52-1, Computed Properties of C9H9NO2.

Spirocyclic Nitroxides as Versatile Tools in Modern Natural Sciences: From Synthesis to Applications. Part I. Old and New Synthetic Approaches to Spirocyclic Nitroxyl Radicals

Spirocyclic nitroxyl radicals (SNRs) are stable paramagnetics bearing spiro-junction at alpha-, beta-, or gamma-carbon atom of the nitroxide fragment, which is part of the heterocyclic system. Despite the fact that the first representatives of SNRs were obtained about 50 years ago, the methodology of their synthesis and their usage in chemistry and biochemical applications have begun to develop rapidly only in the last two decades. Due to the presence of spiro-function in the SNRs molecules, the latter have increased stability to various reducing agents (including biogenic ones), while the structures of the biradicals (SNBRs) comprises a rigid spiro-fused core that fixes mutual position and orientation of nitroxide moieties that favors their use in dynamic nuclear polarization (DNP) experiments. This first review on SNRs will give a glance at various strategies for the synthesis of spiro-substituted, mono-, and bis-nitroxides on the base of six-membered (piperidine, 1,2,3,4-tetrahydroquinoline, 9,9 ‘(10H,10H ‘)-spirobiacridine, piperazine, and morpholine) or five-membered (2,5-dihydro-1H-pyrrole, pyrrolidine, 2,5-dihydro-1H-imidazole, 4,5-dihydro-1H-imidazole, imidazolidine, and oxazolidine) heterocyclic cores.

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

 

Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, Quality Control of (4S,5R)-4-Methyl-5-phenyloxazolidin-2-one16251-45-9, Name is (4S,5R)-4-Methyl-5-phenyloxazolidin-2-one, SMILES is O=C1O[C@H](C2=CC=CC=C2)[C@H](C)N1, belongs to oxazolidines compound. In a article, author is Gandhi, Tejas S., introduce new discover of the category.

Synthesis and characterization of different types of epoxide-based Mannich polyols from low-cost cashew nut shell liquid

Cashew nut shell liquid (CNSL) is a natural aromatic organic oil consisting of phenolic compounds with interesting structures. Extraction of CNSL was performed in a Soxhlet apparatus. The major (90 %) component of CNSL is anacardic acid, which is easily decarboxylated to cardanol (10 %) by use of conventional methods. In this paper we describe a three-step synthesis of Mannich polyols for rigid foams. The first step is synthesis of N-(2-hydroxyethyl)-1,3-oxazolidine (the Mannich precursor) by condensation of paraformaldehyde and diethanolamine. The second step involves synthesis of the Mannich base phenolic ring of cardanol by reaction with N-(2-hydroxyethyl)-1,3-oxazolidine. The third step is alkoxylation. The synthesized polyols were characterized by FTIR and H-1 NMR spectroscopy and thin-layer chromatography.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions. you can also check out more blogs about 16251-45-9. Quality Control of (4S,5R)-4-Methyl-5-phenyloxazolidin-2-one.

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