Tag: 100-200

Novel (R)-(+)-limonene-derived ligands: synthesis and application in asymmetric transfer hydrogenations was written by Roszkowski, Piotr;Maurin, Jan K.;Czarnocki, Zbigniew. And the article was included in Tetrahedron: Asymmetry in 2012.Formula: C8H9ClO This article mentions the following:

(R)-(+)-Limonene was transformed into mono-N-tosylated-1,2-diamine derivatives using an N-tosylaziridination procedure followed by sodium azide treatment and reduction on Pd/C. The ligands obtained proved effective in the ruthenium-catalyzed asym. transfer hydrogenation protocol on aromatic ketones. Depending on the ligand and the substrate, the benzylic alc. products were obtained in nearly racemic form or up to 92% ee. In the experiment, the researchers used many compounds, for example, (R)-1-(3-Chlorophenyl)ethanol (cas: 120121-01-9Formula: C8H9ClO).

(R)-1-(3-Chlorophenyl)ethanol (cas: 120121-01-9) belongs to alcohols. The oxygen atom of the strongly polarized O―H 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. Alcohols may be oxidized to give ketones, aldehydes, and carboxylic acids. These functional groups are useful for further reactions. Oxidation of organic compounds generally increases the number of bonds from carbon to oxygen (or another electronegative element, such as a halogen), and it may decrease the number of bonds to hydrogen.Formula: C8H9ClO

Referemce:
Alcohol – Wikipedia,
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Visible-Light-Enabled Carboxylation of Benzyl Alcohol Derivatives with CO₂ Using a Palladium/Iridium Dual Catalyst was written by Jin, Yushu;Toriumi, Naoyuki;Iwasawa, Nobuharu. And the article was included in ChemSusChem in 2022.Formula: C7H7ClO This article mentions the following:

A highly efficient carboxylation of benzyl alc. derivatives with CO₂ using a palladium/iridium dual catalyst under visible-light irradiation was developed. A wide range of benzyl alc. derivatives was employed to provide benzylic carboxylic acids in moderate to high yields. Mechanistic studies indicated that the oxidative addition of benzyl alc. derivatives was possibly the rate-determining-step. It was also found that a switchable site-selective carboxylation between benzylic C-O and aryl C-Cl moieties could be achieved simply by changing the palladium catalyst. In the experiment, the researchers used many compounds, for example, (4-Chlorophenyl)methanol (cas: 873-76-7Formula: C7H7ClO).

(4-Chlorophenyl)methanol (cas: 873-76-7) belongs to alcohols. A strong base can deprotonate an alcohol to yield an alkoxide ion (R―O−). For example, sodamide (NaNH2), a very strong base, abstracts the hydrogen atom of an alcohol. 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.Formula: C7H7ClO

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Spectroscopic analysis and molecular structures of mononuclear bis(t-butyltrithiocarbonato)-nickel, -palladium and (t-butyltrithiocarbonato)(t-butylthiolato)platinum dimer was written by El-khateeb, Mohammad;Moriyama, Hayato;Yoshida, Yukihiro;Kitagawa, Hiroshi. And the article was included in Inorganica Chimica Acta in 2021.Application of 29364-29-2 This article mentions the following:

Treatment of the bis(triphenylphosphine)dichlorometal (PPh₃)₂MCl₂ (M = Ni, Pd, Pt) with the trithiocarbonato anion (Bu^tSCS^–₂) gave products depending on the metal center. In case of nickel, the product is Ni(κ²S,S-S₂CSBu^t)₂ (1) while for the palladium case, a similar complex Pd(κ²S,S-S₂CSBu^t)₂ (2) was obtained in addition to the dithiocarbonato complex (PPh₃)₂Pd(κ²S,S-S₂C:O). However, the platinum reaction gave two products, a dimeric species Pt₂(μ-SBu^t)₂(κ²S,S-S₂CSBu^t)₂ (3) and the known trithiocarbonato complex (PPh₃)₂Pt(κ²S,S-S₂C:S). These products were characterized by IR, ¹H, ¹³C{¹H} NMR and UV-Vis spectroscopy. Crystal structures of these complexes were determined by single crystal x-ray diffraction measurements. In the experiment, the researchers used many compounds, for example, Sodium 2-methyl-2-propanethiolate (cas: 29364-29-2Application of 29364-29-2).

Sodium 2-methyl-2-propanethiolate (cas: 29364-29-2) 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. The most common reactions of alcohols can be classified as oxidation, dehydration, substitution, esterification, and reactions of alkoxides.Application of 29364-29-2

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Growth of hafnium dioxide thin films by MOCVD using a new series of cyclopentadienyl hafnium compounds was written by Carta, Giovanni;El Habra, Naida;Rossetto, Gilberto;Torzo, Giacomo;Crociani, Laura;Natali, Marco;Zanella, Pierino;Cavinato, Gianni;Matterello, Valentina;Rigato, Valentino;Kaciulis, Saulius;Mezzi, Alessio. And the article was included in Chemical Vapor Deposition in 2007.COA of Formula: C6H15NO This article mentions the following:

Thin films of HfO₂ are grown by metal-organic (MO)CVD on Si(001) and fused quartz substrates at 400-500 °C, using a new series of bis-cyclopentadienyl bis-amino-alkoxide hafnium precursors, namely [(C₅H₅)₂Hf{OC(CH₃)₂CH₂N (CH₃)₂}₂] and [(C₅H₅)₂Hf{OCH(CH₃)CH₂N(CH₃)₂}₂], stable in air because of their strong coordination to the metal center. The films obtained are investigated by X-ray diffraction (XRD), XPS, Rutherford backscattering spectroscopy (RBS), and at. force microscopy (AFM). Monoclinic phase HfO₂ (baddeleyite) films, characterized by a correct stoichiometric ratio and a granular surface morphol. with a roughness/thickness ratio that decreases with increasing deposition rate, are obtained. In the experiment, the researchers used many compounds, for example, 1-(Dimethylamino)-2-methylpropan-2-ol (cas: 14123-48-9COA of Formula: C6H15NO).

1-(Dimethylamino)-2-methylpropan-2-ol (cas: 14123-48-9) 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. 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.COA of Formula: C6H15NO

Referemce:
Alcohol – Wikipedia,
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Antibacterial, antioxidative and sensory properties of Ziziphora clinopodioides-Rosmarinus officinalis essential oil nanoencapsulated using sodium alginate in raw lamb burger patties was written by Karimifar, Pourya;Saei-Dehkordi, S. Siavash;Izadi, Zahra. And the article was included in Food Bioscience in 2022.Electric Literature of C10H14O This article mentions the following:

This study was aimed to encapsulate Ziziphora clinopodioides-Rosmarinus officinalis essential oil (Z-REO) using sodium alginate (NaAlg) and to evaluate its performance on antimicrobial and antioxidative activities and sensory attributes in lamb burger patties during cold storage for 12 days. GC-MS anal. of Z-REO indicated carvacrol (21.5%) and thymol (16.9%) were the major components. SEM images showed the formation of encapsulated particles. The presence of encapsulated Z-REO in NaAlg was proved based on the increase in band intensity of FTIR spectra. By increasing mass ratios of NaAlg:Z-REO from 1:1 to 2:1, and 4:1, encapsulation efficiency was increased. Average zeta-potential values (mV) of the mass ratios 4:1 and 2:1 were -48.67 and -44.83, indicating the stability of encapsulated particles. The average size of particles ranged from 159.14 nm to 256.14 nm. The results showed that the encapsulated nanoparticles could markedly decrease the growth of inoculated Escherichia coli O157:H7 and Staphylococcus aureus and delay the lipid oxidation of lamb patties compared to the control samples and in samples with free Z-REO. Furthermore, nanoparticles efficiently decreased discoloration and off-odor development in the patties. Therefore, NaAlg-Z-REO nanoparticles could efficiently reduce bacterial growth and oxidative or sensory deterioration of lamb patties during storage. In the experiment, the researchers used many compounds, for example, 5-Isopropyl-2-methylphenol (cas: 499-75-2Electric Literature of C10H14O).

5-Isopropyl-2-methylphenol (cas: 499-75-2) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. 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.Electric Literature of C10H14O

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

2-Hydroxymethylpyridines: 2-(hydroxymethyl)pyridine, 2-methyl-6-(hydroxymethyl)pyridine, and 2,6-bis(hydroxymethyl)pyridine) was written by Chumakov, Yu. I.;Stolyarov, Z. E.. And the article was included in Metody Polucheniya Khimicheskikh Reaktivov i Preparatov in 1963.HPLC of Formula: 1122-71-0 This article mentions the following:

2-(α-Acetoxymethyl)pyridines hydrolyzed with 10% NaOH at 100° 6 hrs. produced the corresponding title compounds (I), (II), and (III), resp. The reaction mixture was extracted with CH₂Cl₂ or CHCl₃ and the solvent removed by distillation The residue distilled in vacuo yielded 67-9% I, b₁₅ 108-9°, n²⁰_D 1.5430; picrate m. 157.5-58°. In the similar manner II gave 60% yield, b₅ 80-1°, n²⁰_D 1.5390. III, m. 114-14.5°, was obtained in 60% yield by recrystallization from C₆H₆. In the experiment, the researchers used many compounds, for example, 6-Methyl-2-pyridinemethanol (cas: 1122-71-0HPLC of Formula: 1122-71-0).

6-Methyl-2-pyridinemethanol (cas: 1122-71-0) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. 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.HPLC of Formula: 1122-71-0

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Structure and activity of the constituents of the flotation pine oils was written by Desalbres, L.. And the article was included in Rev. ind. minérale in 1956.Quality Control of rel-(1s,4s)-4-(2-Hydroxypropan-2-yl)-1-methylcyclohexanol hydrate This article mentions the following:

Pine oil is widely used in flotation processes. The foaming activity of a pine oil is bound to the presence of terpenic alcs. in C₁₀H₁₈O. The average chem. analysis of pine oils gives: tertiary alcs.:terpineols 60-70%, secondary alcs.:borneol-fenchol 15-20%, hydrocarbons 10-20%. The structural diagrams of these and their subgroups are given. The tertiary hydroxyl group is the most active; then the secondary groups and ether oxides; the ethylenic hydrocarbons have no activity. No exact relation exists between the solubility and the foaming power within a given group. At 15°, 2.1 g. of terpineol is needed to saturate 1 g. of water, 1 g. of menthanol, 0.44 g. of borneol; menthanol foams the most. The surface activity of a mol. has no relation to its foaming activity: a saturated menthanol sol at 15° has a surface tension of 38 dynes/cm., a saturated terpineol sol of 39 dynes/cm. For the same concentration, the menthanol gives a much greater volume of foam. It is the same with the hydrocarbons: saturated cymene sol has a surface tension of 52, of terpinene 51 dynes/cm., but the cymene is nonfoaming while terpinene is. The foaming activity of a mol. seems to be connected therefore to an assembly of characters of a functional and structural order. In the experiment, the researchers used many compounds, for example, rel-(1s,4s)-4-(2-Hydroxypropan-2-yl)-1-methylcyclohexanol hydrate (cas: 2451-01-6Quality Control of rel-(1s,4s)-4-(2-Hydroxypropan-2-yl)-1-methylcyclohexanol hydrate).

rel-(1s,4s)-4-(2-Hydroxypropan-2-yl)-1-methylcyclohexanol hydrate (cas: 2451-01-6) 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. Grignard and organolithium reagents are powerful tools for organic synthesis, and the most common products of their reactions are alcohols.Quality Control of rel-(1s,4s)-4-(2-Hydroxypropan-2-yl)-1-methylcyclohexanol hydrate

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Photocleavage of Covalently Immobilized Amphiphilic Block Copolymer: From Bilayer to Monolayer was written by Gungor, Eda;Armani, Andrea M.. And the article was included in Macromolecules (Washington, DC, United States) in 2016.Reference of 60463-12-9 This article mentions the following:

We developed and verified a method to create a photocleavable smart surface. Using the grafting to approach, we covalently attached an intelligently designed tailor-made diblock copolymer to a silicon wafer. The photocleavable moiety, o-nitrobenzyl (ONB) ester, was integrated into the copolymer at the junction point between the hydrophilic poly(ethylene oxide) (PEO) and the hydrophobic polystyrene (PS) chains. The well-defined azide bearing amphiphilic block copolymer was synthesized via a general stepwise strategy that combines atom transfer radical polymerization (ATRP) and copper(I)-catalyzed azide-alkyne cycloaddition reaction (CuAAC), ending with azidation. The azide end-functionalized copolymer chains were covalently bound to the alkyne-immobilized silicon wafer by CuAAC. The smart surface was exposed to UV irradiation, resulting in photocleavage of the grafted ONB linker. As a result of the photocleavage and subsequent removal of the o-nitrosobenzaldehyde bearing PEO, the PS layer remained on the surface. To confirm the behavior, film thickness and wettability changes were investigated before and after UV irradiation using AFM and contact angle measurements. Integration of photocleavable polymers through covalent grafting to solid surfaces contributes responsiveness to such materials that can find a wide array of applications in advanced devices. In the experiment, the researchers used many compounds, for example, 3-(Hydroxymethyl)-4-nitrophenol (cas: 60463-12-9Reference of 60463-12-9).

3-(Hydroxymethyl)-4-nitrophenol (cas: 60463-12-9) belongs to alcohols. Because alcohols are easily synthesized and easily transformed into other compounds, they serve as important intermediates in organic synthesis. 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.Reference of 60463-12-9

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Gum ghatti (Indian gum). III. Neutral oligosaccharides formed on partial acid hydrolysis of the gum was written by Aspinall, G. O.;Auret, Barbara J.;Hirst, E. L.. And the article was included in Journal of the Chemical Society in 1958.Related Products of 10030-85-0 This article mentions the following:

Gum ghatti (100 g.) in 1.95 l. H₂O was heated to 100°, 50 ml. 4N H₂SO₄ added, and the solution boiled 1.5 hrs. The cooled solution was neutralized with Ba(OH)₂ and BaCO₃, filtered, concentrated to 400 ml., and poured into 2 l. EtOH. The precipitated degraded polysaccharide A (I) (50 g.) was separated and the liquor concentrated to 200 ml., passed through Amberlite IR-120 (H) and IR-4B (OH), and conced. to 35 g. sirup B (II). I was hydrolyzed again to give a further 15 g. II. II (50 g.) in 200 ml. H₂O was chromatographed on 800 g. 1:1 C-Celite. Elution with H₂O gave 36 g. monosaccharides [arabinose (III), galactose (IV), xylose, and rhamnose (trace)] and a small fraction (0.8 g.) which gave L-rhamnose hydrate, m. 90-1° [α]_D -2°. Oligosaccharides were eluted with EtOHH₂O. Chromatography of fraction 1 (0.23 g.) showed 6-(O-β-galactopyranosyl)galactose (V), 3-(O-β-arabopyranosyl)arabinose (VI) and a pentose-containing disaccharide. Hydrolysis of the mixture gave III and IV. Fraction 2 (1.1 g.) was chromatographed on cellulose with 10:4:3 EtOAc-C₅H₅N-H₂O to give 0.15 g. of mixture III, IV and arabinose-containing disaccharides and 0.56 g. sirup B, [α]_D 31°. Methylation of 200 mg. II followed by hydrolysis and chromatography on cellulose with 7:3 pert. ether-BuOH gave 40 mg. 2,3,4,6-tetra-O-methyl-D-galactose (VII) (aniline derivative, m. 198°), 35 mg. mixture of VII and 2,3,4-tri-O-methylgalactose (VIII), and 39 mg. VIII (aniline derivative, m. 159-60°). Fraction 3 (205 mg.) chromatographed on cellulose gave 65 mg. mixture III, IV and three III-containing disaccharides, 10 mg. VI, 30 mg. disaccharide, [α]_D 125°, which hydrolyzed to IV and glucose, and 50 mg. V. Fraction 4 gave 155 mg. sugar (IX), m. 202-3° [α]_D 80°. Methylation of 100 mg. IX followed by hydrolysis and chromatography on cellulose gave 28 mg. VII with a trace of 2,5-di-O-methylarabinose (X), 5 mg. X, 10 mg. tri-O-methylgalactose, 2,4-di-O-methylarabinose (XI), and 20 mg. XI, [α]_D 120°. Fraction 5 (80 mg.) separated on cellulose gave 25 mg. mixture of III-containing disaccharides, 5 mg. 3-(O-β-galactopyranosyl)arabinose (XII), 25 mg. 3-(O-β-D-galactopyranosyl)-D-galactose, m. 151-2°, [α]_D 69°, and 3 mg. V. Chromatography of 0.58 g. fraction 6 (0.83 g.) on cellulose gave 0.45 g. trisaccharide (XIII), [α]_D 20°, and traces of V and monosaccharides. Partial and complete hydrolysis of XIII gave V and IV, resp. Methylation of 200 mg. XIII followed by hydrolysis gave 36 mg. VII and 80 mg. VIII. Fraction 7 gave 265 mg. trisaccharide (XIV), m. 191°, [α]_D 39°. Partial hydrolysis of XIV gave III, IV, XII, and V. Methylation of 200 mg. XIV followed by hydrolysis gave 47 mg. VII, 5 mg. X (2,5-di-O-methyl-L-arabonamide, m. 122°), 40 mg. VIII, and 32 mg. XI. Fraction 8 contained 0.47 g. sugar, [α]_D 14°, which on partial hydrolysis gave V. Fraction 9 gave 100 mg. tetrasaccharide, m. 171°, [α]_D 26°, which on partial hydrolysis gave III, IV, XII, and V. Fraction 10 gave a sugar, m. 177-9° (decomposition), [α]_D 19°, which on partial hydrolysis gave III, IV, XII, and V. Thus, the first 3 members of the series O-(β-D-galactopyranosyl)-[(1 → 6)-O-(β-D-galactopyranosyl)]_n-(1 → 6)-D-galactose (n = 0, 1, 2) and the first 4 members of the series O-(β-D-galactopyranosyl)-[(1 → 6)-O-(β-D-galactopyranosyl)]_n-(1 → 3)-L-arabinose (n = 0, 1, 2, 3) have been characterized. In the experiment, the researchers used many compounds, for example, (2R,3R,4S,5S)-2,3,4,5-tetrahydroxyhexanal hydrate (cas: 10030-85-0Related Products of 10030-85-0).

(2R,3R,4S,5S)-2,3,4,5-tetrahydroxyhexanal hydrate (cas: 10030-85-0) 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.Related Products of 10030-85-0

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Nano-silica melamine trisulfonic acid as an efficient and reusable heterogeneous catalyst in esterification reactions was written by Javaherian, Mohammad;Latifi, Saeideh;Heidarizadeh, Fariba. And the article was included in Journal of the Iranian Chemical Society in 2022.Product Details of 873-76-7 This article mentions the following:

The use of nano-silica melamine trisulfonic acid as a reusable heterogeneous solid acid catalyst in the esterification reaction of carboxylic acids and alcs. is reported. The reaction conditions were optimized by testing temperature, each component of catalyst, feedstock ratios as well as load of catalyst. The synthesized catalyst was characterized by X-ray diffraction, SEM, Fourier transform IR spectroscopy, and thermogravimetric anal. techniques. The results showed that nano-silica melamine trisulfonic acid was an efficient dehydrating agent in the condensing reactions between different kinds of aliphatic and aromatic carboxylic acids and alcs. The method was simple, rapid, straightforward, catalyst reusability, and holds potential for further application in acid-catalyzed organic synthesis and industrial requirements. In the experiment, the researchers used many compounds, for example, (4-Chlorophenyl)methanol (cas: 873-76-7Product Details of 873-76-7).

(4-Chlorophenyl)methanol (cas: 873-76-7) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. 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.Product Details of 873-76-7

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts