Month: February 2023

Light-Responsive, Shape-Switchable Block Copolymer Particles was written by Lee, Junhyuk;Ku, Kang Hee;Kim, Jinwoo;Lee, Young Jun;Jang, Se Gyu;Kim, Bumjoon J.. And the article was included in Journal of the American Chemical Society in 2019.Application of 60463-12-9 This article mentions the following:

A robust strategy is developed for preparing light-responsive block copolymer (BCP) particles in which shape and color can be actively controlled with high spatial and temporal resolution The key to achieving light-responsive shape transitions of BCP particles is the design and synthesis of surfactants containing light-active groups (i.e., nitrobenzyl esters and coumarin esters) that modulate the amphiphilicity and interfacial activity of the surfactants in response to light of a specific wavelength. These light-induced changes in surfactant structure modify the surface and wetting properties of BCP particles, affording both shape and morphol. transitions of the particles, for example from spheres with an onion-like inner morphol. to prolate or oblate ellipsoids with axially stacked nanostructures. In particular, wavelength-selective shape transformation of the BCP particles can be achieved with a mixture of two light-active surfactants that respond to different wavelengths of light (i.e., 254 and 420 nm). Through the use of light-emitting, photoresponsive surfactants, light-induced changes in both color and shape are further demonstrated. Finally, to demonstrate the potential of the light-triggered shape control of BCP particles in patterning features with microscale resolution, the shape-switchable BCP particles are successfully integrated into a patterned, free-standing hydrogel film, which can be used as a portable, high-resolution display. In the experiment, the researchers used many compounds, for example, 3-(Hydroxymethyl)-4-nitrophenol (cas: 60463-12-9Application of 60463-12-9).

3-(Hydroxymethyl)-4-nitrophenol (cas: 60463-12-9) belongs to alcohols. Similar to water, an alcohol can be pictured as having an sp3 hybridized tetrahedral oxygen atom with nonbonding pairs of electrons occupying two of the four sp3 hybrid orbitals. Converting an alcohol to an alkene requires removal of the hydroxyl group and a hydrogen atom on the neighbouring carbon atom. Dehydrations are most commonly carried out by warming the alcohol in the presence of a strong dehydrating acid, such as concentrated sulfuric acid.Application of 60463-12-9

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Some high-potential trithioether chelates of copper was written by Kanters, Rene P. F.;Yu, Ru;Addison, Anthony W.. And the article was included in Inorganica Chimica Acta in 1992.SDS of cas: 1122-71-0 This article mentions the following:

The linear quadridentate ligand 1,8-bis(2′-quinolyl)-3,6-dithiaoctane and the 3 quinquedentate ligands 1,9-bis(2′-pyridyl)-2,5,8-trithianonane, 1,9-bis(6′-methyl-2′-pyridyl)-2,5,8-trithianonane and 1,11-bis(2′-quinolyl)-3,6,9-trithiaundecane were prepared The deep green-blue Cu(II) chelates were characterized by optical and ESR spectroscopy and cyclic voltammetry. The 2 pyridyl chelates had similar tetragonal coordination about the Cu, with an equatorial N₂S₂ donor set, plus the 3rd thioether S bound axially. The most marked consequence of the pyridine 伪-methylation was that the Cu²⁺/⁺ reduction potential was raised by 鈭?00 mV; otherwise, the E_1/2 was consonant with previously advanced models for correlating redox potentials with ligand structural features. The pyridyl Cu(II) complexes were isolated as the tetrafluoroborate salts, whereas the quinolyl-Cu(II) chelates were rather redox unstable, in association with even more pos. Cu²⁺/⁺聽E_1/2 values, similar to that for dibromine reduction In the experiment, the researchers used many compounds, for example, 6-Methyl-2-pyridinemethanol (cas: 1122-71-0SDS of cas: 1122-71-0).

6-Methyl-2-pyridinemethanol (cas: 1122-71-0) belongs to alcohols. Alcohols are weak acids. The most acidic simple alcohols (methanol and ethanol) are about as acidic as water, and most other alcohols are somewhat less acidic. Under carefully controlled conditions, simple alcohols can undergo intermolecular dehydration to give ethers. This reaction is effective only with methanol, ethanol, and other simple primary alcohols.SDS of cas: 1122-71-0

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Highly enantiomeric reduction of acetophenone and its derivatives by locally isolated Rhodotorula glutinis was written by Zilbeyaz, Kani;Kurbanoglu, Esabi B.. And the article was included in Chirality in 2010.SDS of cas: 171032-87-4 This article mentions the following:

Ninety isolates of microorganisms belonging to different taxonomical groups (30 bacteria, 20 yeast, and 40 fungi) were previously isolated from various samples. These isolates were screened as reducing agents for acetophenone 1a to phenylethanol 2a. It was found that the isolate EBK-10 was the most effective biocatalyst for the enantioselective bioreduction of acetophenone. This isolate was identified as Rhodotorula glutinis by the VITEK 2 Compact system. The various parameters (pH 6.5, temperature 32掳C, and agitation 200 rpm) of the bioreduction reaction was optimized, which resulted in conversions up to 100% with >99% enantiomeric excesses (ee) of the S-configuration. The preparative scale bioreduction of acetophenone 1a by R. glutinis EBK-10 gave (S)-1-phenylethanol 2a in 79% yield, complete conversion, and >99% ee. In addition, R.glutinis EBK-10 successfully reduced various substituted acetophenones. Chirality, 2010. 漏 2010 Wiley-Liss, Inc. In the experiment, the researchers used many compounds, for example, (S)-1-(2-Fluorophenyl)ethanol (cas: 171032-87-4SDS of cas: 171032-87-4).

(S)-1-(2-Fluorophenyl)ethanol (cas: 171032-87-4) belongs to alcohols. Similar to water, an alcohol can be pictured as having an sp3 hybridized tetrahedral oxygen atom with nonbonding pairs of electrons occupying two of the four sp3 hybrid orbitals. Tertiary alcohols cannot be oxidized at all without breaking carbon-carbon bonds, whereas primary alcohols can be oxidized to aldehydes or further oxidized to carboxylic acids.SDS of cas: 171032-87-4

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Cassane-type diterpenoids from Caesalpinia latisiliqua (Cav.) Hattink was written by Huyen, Le Thi;Son, Vu Hoang;Hau, Nguyen Thi Thu;Thu, Nguyen Thi Minh;Hoa, Truong Thi Viet;Hoang, Nguyen Huy;Cuc, Nguyen Thi;Tai, Bui Huu;Thao, Do Thi;Kiem, Phan Van;Nhiem, Nguyen Xuan. And the article was included in Phytochemistry Letters in 2022.Computed Properties of C14H12O4 This article mentions the following:

Three new cassane-type diterpenoids, namely caesalatic acids A-C (1 -3), and seven known compounds, resveratrol (4), piceatannol (5), aromadendrin (6), taxifolin (7), 3,4-dihydroxybenzaldehyde (8), Me gallate (9), and loliolide (10) were isolated from the methanol extract of the Caesalpinia latisiliqua (Cav.) Hattink leaves. Their chem. structures were elucidated by 1D- and 2D-NMR, MS data, CD, and compared with NMR data in the literature. In the experiment, the researchers used many compounds, for example, (E)-4-(3,5-Dihydroxystyryl)benzene-1,2-diol (cas: 10083-24-6Computed Properties of C14H12O4).

(E)-4-(3,5-Dihydroxystyryl)benzene-1,2-diol (cas: 10083-24-6) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. The most common reactions of alcohols can be classified as oxidation, dehydration, substitution, esterification, and reactions of alkoxides.Computed Properties of C14H12O4

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Nitrogen dioxide-catalyzed aerobic oxidation of benzyl alcohols under cocatalyst and acid-free conditions was written by Ren, Fangping;Tian, Xinzhe;Ren, Yun-Lai;Zhao, Shuang;Wang, Jianji;Zhao, Bo. And the article was included in Catalysis Communications in 2017.SDS of cas: 1777-82-8 This article mentions the following:

Nitrogen dioxide is usually considered as a mediator between dioxygen and the catalysts for the aerobic oxidation of alcs. Here, we report that nitrogen dioxide has an ability to catalyze this reaction, which not only avoids the use of the cocatalysts or the acids in traditional approaches, but also reveals a method for the present transformation with a single component catalyst. A series of primary and secondary benzyl alcs. underwent this transformation to give the targeted products in low to high yields. In the experiment, the researchers used many compounds, for example, (2,4-Dichlorophenyl)methanol (cas: 1777-82-8SDS of cas: 1777-82-8).

(2,4-Dichlorophenyl)methanol (cas: 1777-82-8) belongs to alcohols. The oxygen atom of the strongly polarized O鈥旽 bond of an alcohol pulls electron density away from the hydrogen atom. This polarized hydrogen, which bears a partial positive charge, can form a hydrogen bond with a pair of nonbonding electrons on another oxygen atom. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage. No further oxidation is seen except under very stringent conditions.SDS of cas: 1777-82-8

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Fe(III) superoxide radicals in halloysite nanotubes for visible-light-assisted benzyl alcohol oxidation and oxidative C-C coupling of 2-naphthol was written by Baruah, Manash J.;Bora, Tonmoy J.;Dutta, Rupjyoti;Roy, Subhasish;Guha, Ankur Kanti;Bania, Kusum K.. And the article was included in Molecular Catalysis in 2021.Application of 1777-82-8 This article mentions the following:

Selective oxidation of benzyl alcs. to aldehydes and 2-naphthol to BINOL was achieved by activation of mol. oxygen (O₂) and hydrogen peroxide (H₂O₂) over an iron-oxide catalyst embedded in halloysite nanotube. ESR spectroscopy (ESR), Raman and in situ FTIR spectroscopic anal. provided direct evidence for the involvement of superoxide radical bound Fe^III species in the oxidation reaction. Both the anal. suggested the end-on binding of superoxide radical with Fe^III-center. The stability of such radical bound Fe^III-species in halloysite nanotube was analyzed through d. functional theory (DFT) calculations Results suggested that end-on (畏¹) binding was favorable by 13.5 kcal/ mol than the side-on (畏²) binding mode. The formation of such reactive species was believed to play the crucial role in bringing the high selectivity in the catalytic oxidation of benzyl alc. and oxidative C-C coupling of 2-naphthol. UV-Vis spectroscopic studies on the oxidation of benzyl alc. suggested for the initial adsorption of substrate mol. on the catalyst surface followed by its interaction with Fe^III -superoxide/hydroperoxide species generated upon photoirradiation with visible light in presence of O₂. The presence of a suitable band gap 鈭?.14 eV enabled the catalyst to catalyze the reaction under visible light irradiation Both the reactions (benzyl alc. and 2-naphthol oxidation) were tested in presence of both O₂ and H₂O₂ as oxidants at ambient temperature The influence of different parameters like rate of oxygen flow, amount of peroxide, nature of solvent, and catalyst amount on the conversion and selectivity of the reactions were studied to understand their role in the catalytic reactions. Successful oxidation of 2-naphthol with H₂O₂ as oxidant was a real success to overcome the limitations associated with this reaction using H₂O₂ as oxidant. In the experiment, the researchers used many compounds, for example, (2,4-Dichlorophenyl)methanol (cas: 1777-82-8Application of 1777-82-8).

(2,4-Dichlorophenyl)methanol (cas: 1777-82-8) belongs to alcohols. The oxygen atom of the strongly polarized O鈥旽 bond of an alcohol pulls electron density away from the hydrogen atom. This polarized hydrogen, which bears a partial positive charge, can form a hydrogen bond with a pair of nonbonding electrons on another oxygen atom. A multistep synthesis may use Grignard-like reactions to form an alcohol with the desired carbon structure, followed by reactions to convert the hydroxyl group of the alcohol to the desired functionality.Application of 1777-82-8

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

The enantioselective reduction of 2′-fluoroacetophenone utilizing a simplified CBS-reduction procedure was written by Garrett, Christine E.;Prasad, Kapa;Repic, Oljan;Blacklock, Thomas J.. And the article was included in Tetrahedron: Asymmetry in 2002.HPLC of Formula: 171032-87-4 This article mentions the following:

A practical, non-enzymic, catalytic process was developed for the enantioselective reduction of 2′-fluoroacetophenone. A number of catalysts were screened for the oxazaborolidine-type reduction of this ketone to obtain an optimized system. It was shown that the simplest procedure uses the catalyst formed in situ from (S)-伪,伪-diphenyl-2-pyrrolidinemethanol and borane-diethylaniline. In the experiment, the researchers used many compounds, for example, (S)-1-(2-Fluorophenyl)ethanol (cas: 171032-87-4HPLC of Formula: 171032-87-4).

(S)-1-(2-Fluorophenyl)ethanol (cas: 171032-87-4) belongs to alcohols. Because alcohols are easily synthesized and easily transformed into other compounds, they serve as important intermediates in organic synthesis. The most common reactions of alcohols can be classified as oxidation, dehydration, substitution, esterification, and reactions of alkoxides.HPLC of Formula: 171032-87-4

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Sulfonamidopyrrolidinone Factor Xa Inhibitors: Potency and Selectivity Enhancements via P-1 and P-4 Optimization was written by Choi-Sledeski, Yong Mi;McGarry, Daniel G.;Green, Daniel M.;Mason, Helen J.;Becker, Michael R.;Davis, Roderick S.;Ewing, William R.;Dankulich, William P.;Manetta, Vincent E.;Morris, Robert L.;Spada, Alfred P.;Cheney, Daniel L.;Brown, Karen D.;Colussi, Dennis J.;Chu, Valeria;Heran, Christopher L.;Morgan, Suzanne R.;Bentley, Ross G.;Leadley, Robert J.;Maignan, Sebastien;Guilloteau, Jean-Pierre;Dunwiddie, Christopher T.;Pauls, Henry W.. And the article was included in Journal of Medicinal Chemistry in 1999.Recommanded Product: 15777-70-5 This article mentions the following:

Sulfonamidopyrrolidinones were previously disclosed as a selective class of factor Xa (fXa) inhibitors, culminating in the identification of RPR120844 as a potent member with efficacy in vivo. Recognizing the usefulness of the central pyrrolidinone template for the presentation of ligands to the S-1 and S-4 subsites of fXa, studies to optimize the P-1 and P-4 groups were initiated. Sulfonamidopyrrolidinones containing 4-hydroxy- and 4-aminobenzamidines were discovered to be effective inhibitors of fXa. X-ray crystallog. experiments in trypsin and mol. modeling studies suggest that our inhibitors bind by insertion of the 4-hydroxybenzamidine moiety into the S-1 subsite of the fXa active site. Of the P-4 groups examined, the pyridylthienyl sulfonamides were found to confer excellent potency and selectivity especially in combination with 4-hydroxybenzamidine. Compound I (RPR130737) was shown to be a potent fXa inhibitor (K_i = 2 nM) with selectivity against structurally related serine proteinases (>1000 times). Preliminary biol. evaluation demonstrates the effectiveness of this inhibitor in common assays of thrombosis in vitro (e.g. activated partial thromboplastin time) and in vivo (e.g. rat FeCl₂-induced carotid artery thrombosis model). In the experiment, the researchers used many compounds, for example, 4-Hydroxy-3-methylbenzonitrile (cas: 15777-70-5Recommanded Product: 15777-70-5).

4-Hydroxy-3-methylbenzonitrile (cas: 15777-70-5) belongs to alcohols. Alcohols are among the most common organic compounds. They are used as sweeteners and in making perfumes, are valuable intermediates in the synthesis of other compounds, and are among the most abundantly produced organic chemicals in industry. Converting an alcohol to an alkene requires removal of the hydroxyl group and a hydrogen atom on the neighbouring carbon atom. Dehydrations are most commonly carried out by warming the alcohol in the presence of a strong dehydrating acid, such as concentrated sulfuric acid.Recommanded Product: 15777-70-5

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Highly efficient NHC-iridium-catalyzed 尾-methylation of alcohols with methanol at low catalyst loadings was written by Lu, Zeye;Zheng, Qingshu;Zeng, Guangkuo;Kuang, Yunyan;Clark, James H.;Tu, Tao. And the article was included in Science China: Chemistry in 2021.Formula: C9H9F3O This article mentions the following:

A highly efficient 尾-methylation of primary and secondary alcs. with methanol was achieved by using bis-N-heterocyclic carbene iridium (bis-NHC-Ir) complexes. Broad substrate scope and up to quant. yields were achieved at low catalyst loadings with only hydrogen and water as byproducts. The protocol was readily extended to the 尾-alkylation of alcs. with several primary alcs. Control experiments, along with DFT calculations and crystallog. studies, revealed that the ligand effect was critical to their excellent catalytic performance, shedded light on more challenging Guerbet reactions with simple alcs. In the experiment, the researchers used many compounds, for example, 2-(4-(Trifluoromethyl)phenyl)ethanol (cas: 2968-93-6Formula: C9H9F3O).

2-(4-(Trifluoromethyl)phenyl)ethanol (cas: 2968-93-6) belongs to alcohols. Similar to water, an alcohol can be pictured as having an sp3 hybridized tetrahedral oxygen atom with nonbonding pairs of electrons occupying two of the four sp3 hybrid orbitals. Under carefully controlled conditions, simple alcohols can undergo intermolecular dehydration to give ethers. This reaction is effective only with methanol, ethanol, and other simple primary alcohols.Formula: C9H9F3O

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts