Tag: M.W:0-100

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Induction, fixation and recovery of self-organized helical superstructures in achiral liquid crystalline polymer, published in 2021, which mentions a compound: 4221-99-2, Name is (S)-Butan-2-ol, Molecular C4H10O, Computed Properties of C4H10O.

The fixation, storage and self-recovery of chiral information in superstructures constructed by weak noncovalent bonds remain a big challenge in nature. Here, we describe a novel self-assembled system where the mol. chirality can be transferred and further stored into a helical superstructure. Based on achiral liquid crystalline polymers (LCPs), the twist between azobenzene (Azo) units in polymer side chains can be switched by the configuration or alkyl chain length of the introduced chiral dopant. Furthermore, the crosslinking strategy of polymer side chains was adopted to allow permanent memory of the induced helical superstructure after complete removal of the chiral dopant. Although the helical superstructure was temporarily destroyed by UV light irradiation, the stored chiral information enabled self-recovery of the previous helical chirality, without the need for any pre-existing chiral source. The chiral switching in the absence of chiral source is unprecedented and opens a new window for the design and application of chiral materials.

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Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Nakabayashi, Kazuhiro; Fujita, Karin published an article about the compound: (S)-Butan-2-ol( cas:4221-99-2,SMILESS:C[C@H](O)CC ).COA of Formula: C4H10O. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:4221-99-2) through the article.

A series of novel poly(m-phenylene)s with terthiophene and/or chiral side chains have been developed to investigate the correlation between poly(m-phenylene) polymer structure and self-assembly behaviors. As a result of CD spectroscopy, a poly(m-phenylene) that alternately had terthiophene and chiral side chains exhibited the clear Cotton effect in THF, THF/methanol, and THF/acetonitrile conditions, indicating that the defined nanostructure was successfully formed by efficiently using the two interactions between side chains even in the good solvent condition. On the other hand, poly(m-phenylene)s with an irregularly sequence of terthiophene and chiral side chains did not have a capability to form the nanostructure regardless of solvent condition. These results demonstrated that an efficient usage of side chain interactions based on an alternating polymer structure was important for the formation of self-assembled nanostructure in poly(m-phenylene)s.

Here is just a brief introduction to this compound(4221-99-2)COA of Formula: C4H10O, more information about the compound((S)-Butan-2-ol) is in the article, you can click the link below.

Reference:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: (S)-Butan-2-ol, is researched, Molecular C4H10O, CAS is 4221-99-2, about Enantioselective recognition of chiral guests by the water-soluble Chiral [Mo132O372(H2O)72(x-Lactate)30]42- nanocapsules.Safety of (S)-Butan-2-ol.

Investigations of chiral host guest chem. are important to explore recognition in confined environments. Here, by synthesizing water-soluble chiral porous nanocapsule based on the inorganic metal-oxo Keplerate-type cluster, {Mo132} with chiral lactate ligands with the composition [Mo132O372(H2O)72(x-Lactate)30]42- (x = D or L), it was possible to study the interaction with a chiral guest, L/D-carnitine and (R/S)-2-butanol in aqueous solution The enantioselective recognition was studied by quant. 1H NMR and 1H DOSY NMR which highlighted that the chiral recognition is regulated by two distinct sites. Differences in the association constants (K) of L- and D-carnitine, which, due to their charge, are generally restricted from entering the interior of the host, are observed, indicating that their recognition predominantly occurs at the surface pores of the structure. Conversely, a larger difference in association constants (KS/KR = 3) is observed for recognition within the capsule interior of (R)- and (S)-2-butanol.

If you want to learn more about this compound((S)-Butan-2-ol)Safety of (S)-Butan-2-ol, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(4221-99-2).

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Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Formula: C4H10O. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: (S)-Butan-2-ol, is researched, Molecular C4H10O, CAS is 4221-99-2, about Surface chiroselective assembly of enantiopure crystalline porous films containing bichiral building blocks. Author is Chen, Hao; Gu, Zhi-Gang; Zhang, Jian.

The development of chiral crystalline porous materials (CPMs) containing multiple chiral building blocks plays an important role in chiral chem. and applications but is a challenging task. Herein, we report the first example of bichiral building block based enantiopure CPM films containing metal-organic cages (MOCs) and metal complexes. The functionalized substrate was immersed subsequently into homochiral metal complex (R)- or (S)-Mn(DCH)3 (DCH = 1,2-diaminocyclohexane) and racemic Ti4L6 cage (L = embonate) solutions by a layer-by-layer growth method. During the assembly process, the substrate surface coordinated with (R)- or (S)-Mn(DCH)3 can, resp., layer-by-layer chiroselectively connect Δ- or Λ-Ti4L6 cages to form homochiral (R, Δ)- or (S, Λ)-CPM films with a preferred [111] growth orientation, tunable thickness and homogeneous surface. The resulting enantiopure CPM films show strong chirality, photoluminescence, and circularly polarized luminescence (CPL) properties as well as good enantioselective adsorption toward enantiomers of 2-butanol and methyl-lactate. The present in situ surface chiroselective strategy opens a new route to assemble homochiral CPM films containing multiple chiral building blocks for chiral applications.

If you want to learn more about this compound((S)-Butan-2-ol)Formula: C4H10O, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(4221-99-2).

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Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Category: tetrahydrofurans. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: (S)-Butan-2-ol, is researched, Molecular C4H10O, CAS is 4221-99-2, about Boron containing chiral Schiff bases: Synthesis and catalytic activity in asymmetric transfer hydrogenation (ATH) of ketones. Author is Pasa, Salih; Arslan, Nevin; Meric, Nermin; Kayan, Cezmi; Bingul, Murat; Durap, Feyyaz; Aydemir, Murat.

Asym. Transfer Hydrogenation (ATH) has been an attractive way for the reduction of ketones RC(O)R1 (R = Ph, Me, 3-nitrophenyl, etc.; R1 = naphth-1-yl, cyclohexyl, Me, etc.) to chiral alcs. (S)-RCH(OH)R1. A great number of novel and valuable synthetic pathways have been achieved by the combination usage of organometallic and coordination chem. for the production of important class of compounds and particularly optically active mols. For this aim, four boron containing Schiff bases e.g., I were synthesized by the reaction of 4-formylphenylboronic acid/phenylboronic acid with chiral amines such as L-leucine, L-cysteine and L-tyrosine. The boron containing structures have been found as stable compounds due to the presence of covalent B-O bonds and thus could be handled in laboratory environment. They were characterized by 1H NMR and FT-IR spectroscopy and elemental anal. and used as catalyst in the transfer hydrogenation of ketones to the related alc. derivatives with high conversions (up to 99%) and low enantioselectivities (up to 22% ee).

If you want to learn more about this compound((S)-Butan-2-ol)Category: tetrahydrofurans, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(4221-99-2).

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Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 4221-99-2, is researched, Molecular C4H10O, about Halogen-substituted anthranilic acid derivatives provide a novel chemical platform for androgen receptor antagonists, the main research direction is prostate cervical cancer methyl anthranilate androgen receptor antiandrogen antihormone; Androgen receptor; Antiandrogens; Antihormone; Cellular senescence; Methyl anthranilate derivatives; Prostate cancer.Quality Control of (S)-Butan-2-ol.

Here we analyzed structure-activity relationships of a battery of 36 non-steroidal structural variants of Me anthranilate including 23 synthesized compounds We identified structural requirements that lead to more potent AR antagonists. Specific compounds inhibit the transactivation of wild-type AR as well as AR mutants that render treatment resistance to hydroxyflutamide, bicalutamide and the second-generation AR antagonist enzalutamide. This suggests a distinct mode of inhibiting the AR compared to the clin. used compounds Competition assays suggest binding of these compounds to the AR ligand binding domain and inhibit PCa cell proliferation. Moreover, active compounds induce cellular senescence despite inhibition of AR-mediated transactivation indicating a transactivation-independent AR-pathway. In line with this, fluorescence resonance after photobleaching (FRAP) – assays reveal higher mobility of the AR in the cell nuclei. Mechanistically, fluorescence resonance energy transfer (FRET) – assays indicate that the amino-carboxy (N/C)-interaction of the AR is not affected, which is in contrast to known AR-antagonists. This suggests a mechanistically novel mode of AR-antagonism. Together, these findings indicate the identification of a novel chem. platform as a new lead structure that extends the diversity of known AR antagonists and possesses a distinct mode of antagonizing AR-function.

There is still a lot of research devoted to this compound(SMILES：C[C@H](O)CC)Quality Control of (S)-Butan-2-ol, and with the development of science, more effects of this compound(4221-99-2) can be discovered.

Reference:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: (S)-Butan-2-ol( cas:4221-99-2 ) is researched.Formula: C4H10O.Liu, Zexi; Ai, Jing; Kumar, Prashant; You, Enming; Zhou, Xiong; Liu, Xi; Tian, Zhongqun; Bour, Petr; Duan, Yingying; Han, Lu; Kotov, Nicholas A.; Ding, Songyuan; Che, Shunai published the article 《Enantiomeric Discrimination by Surface-Enhanced Raman Scattering-Chiral Anisotropy of Chiral Nanostructured Gold Films》 about this compound( cas:4221-99-2 ) in Angewandte Chemie, International Edition. Keywords: enantioseparation surface enhanced raman scattering chiral anisotropy gold film; chiral anisotropy; chiral nanostructured Au film; chiral response; enantiomeric discrimination; surface-enhanced Raman scattering. Let’s learn more about this compound (cas:4221-99-2).

A surface-enhanced Raman scattering-chiral anisotropy (SERS-ChA) effect is reported that combines chiral discrimination and surface Raman scattering enhancement on chiral nanostructured Au films (CNAFs) equipped in the normal Raman scattering Spectrometer. The CNAFs provided remarkably higher enhancement factors of Raman scattering (EFs) for particular enantiomers, and the SERS intensity was proportional to the enantiomeric excesses (ee) values. Except for mols. with mesomeric species, all of the tested enantiomers exhibited high SERS-ChA asymmetry factors (g), ranging between 1.34 and 1.99 regardless of polarities, sizes, chromophores, concentrations and ee. The effect might be attributed to selective resonance coupling between the induced elec. and magnetic dipoles associated with enantiomers and chiral plasmonic modes of CNAFs.

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Reference:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Chemistry involves the study of all things chemical – chemical processes, chemical compositions and chemical manipulation – in order to better understand the way in which materials are structured, how they change and how they react in certain situations. Computed Properties of C4H8O2

Optimization of clearance of adenosine inhibitors of bacterial NAD +-dependent DNA ligase is discussed. To reduce Cytochrome P-450-mediated metabolic clearance, many strategies were explored; however, most modifications resulted in compounds with reduced antibacterial activity and/or unchanged total clearance. The alkyl side chains of the 2-cycloalkoxyadenosines were fluorinated, and compounds with moderate antibacterial activity and favorable pharmacokinetic properties in rat and dog were identified.

Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.Read on for other articles about 453-20-3. Computed Properties of C4H8O2

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Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Application In Synthesis of 3-Hydroxytetrahydrofuran, As a society publisher, everything we do is to support the scientific community – so you can trust us to always act in your best interests, and get your work the international recognition that it deserves.

Based on preceding work on photoelectrochemistry at semiconductor single crystal electrodes the field of photocatalysis at semiconductor powders has experienced a tremendous growth in the last three decades. The reason for this is the genuine property of inorganic semiconductor surfaces to photocatalyze concerted reduction and oxidation reactions of a great variety of electron donor and acceptor substrates. Whereas high attention was paid to water splitting and exhaustive aerobic degradation of pollutants, only a small part of research explored synthetic aspects. After introducing the basic mechanistic principles, standard experiments for the preparation and characterization of visible light active photocatalysts and for the investigation of reaction mechanisms are discussed. Novel atom-economic C?C and C?N coupling reactions illustrate the relevance for organic synthesis. They exemplify that the multidisciplinary field of semiconductor photocatalysis combines classical photochemistry with electrochemistry, solid state chemistry, and heterogeneous catalysis.

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Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Chemistry involves the study of all things chemical – chemical processes, chemical compositions and chemical manipulation – in order to better understand the way in which materials are structured, how they change and how they react in certain situations. Formula: C4H8O2

It is now over ten years since the seminal experiments of Leon Sanche’s group in Sherbrooke have compellingly shown that subexcitation electrons interacting with DNA could cause the occurrence of specific resonant processes which in turn would eventually lead to either single or double strand breaks in DNA materials, to the damaging of its molecular components and possibly to biological apoptosis. Since then a great deal of activity has been spurred by that initial work, with experiments and computations being carried out in several laboratories around the world. Hence, several components of the DNA molecular structure and make-up, i.e. from the purinic and pyrimidinic bases to the sugar and phosphate fragments, have been analysed in detail in the gas phase, on thin-film deposits on noble metals, and in some form of condensed phase, in interaction with low energy electrons. Likewise, several theoretical and computational approaches have been directed at the study of the molecular processes deemed to be crucially involved in the various steps of the energy deposition by the impinging electron onto the molecular networks. The aim of the present review is therefore to put together, after these ten years of intense activity, the major findings which have been consolidated from the broad variety of existing experiments and, at the same time, the main computational approaches which describe the extent of molecular damage following the initial electron attachment process. The present field, in fact, is becoming mature enough to profitably stand an overall evaluation of its experimental and theoretical/computational results and to further construct, from such a review, a starting point for the assessment of its future directions. After a detailed analysis of the experimental data, in the gas phase and in other phases, we shall therefore report the main computational tools and theoretical concepts employed today for the interpretation of the measurements at the molecular level. An overall analysis of the subject will be attempted in the last Section of this review.

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Reference：
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem