Tag: 200-300

Ruzickova, Jana;Raclavska, Helena;Safar, Michal;Kucbel, Marek;Svedova, Barbora;Raclavsky, Konstantin;Juchelkova, Dagmar;Scala, Fabrizio;Kantor, Pavel published 《Environmental risks related to organic compounds from the combustion of paper briquettes in domestic boilers》 in 2021. The article was appeared in 《Journal of Hazardous Materials》. They have made some progress in their research.SDS of cas: 140-66-9 The article mentions the following:

Environmental risks connected with the combustion of paper/cardboard briquettes are still not sufficiently known. This paper aims to bring attention to the risks related to the utilization of paper briquettes in local boilers and to characterize these risks by means of the identification of organic compounds in deposits from exhaust flues. The identification of the chem. compounds was performed by pyrolysis gas chromatog. with mass spectrometric detection. Paper/cardboard briquettes contain 119 compounds of biogenic origin derived from major biomass components and 53 additives. Additives are used both for improving the properties of paper and in printing inks. By burning the paper briquettes, the same 53 compounds from the additive group were caught in the deposits from the flue gas pathway, occurring in the range of 1-10% of the concentration of individual compounds (additives) contained in the input fuel. Compounds that are very stable during the combustion process have an enrichment factor (EF) > 30, which corresponded to approx. 3% of the additive capture in deposits. The highest values were found for plasticisers (phthalates). Many of the primary organic compounds contained in the input raw material do not decompose during combustion and can have adverse effects on human health. The experimental procedure involved many compounds, such as 4-tert-Octylphenol (cas: 140-66-9) .

4-tert-Octylphenol(cas: 140-66-9) has been used as a reference standard for the determination of the analyte in water samples using ultra-high-performance liquid chromatography/tandem mass spectrometry (UHPLC/MS/MS).SDS of cas: 140-66-9

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Category: alcohols-buliding-blocksIn 2016, Sotto, Nicolas;Cazorla, Clement;Villette, Carole;Billamboz, Muriel;Len, Christophe published 《Selective Pinacol-Coupling Reaction using a Continuous Flow System》. 《Journal of Organic Chemistry》published the findings. The article contains the following contents:

The first continuous flow pinacol coupling reaction of carbonyl compounds was successfully achieved within only 2 min during a single pass through a cartridge filled with zinc(0). The optimized method allowed the efficient production of gram-scale value-added compounds with high productivity. The developed methodol. is efficient for aromatic or α,β-unsaturated aldehydes but gives moderate results for more stable acetophenone derivatives Moreover, the flow method displayed better results in terms of yield and selectivity in comparison to the corresponding batch methodol. To complete the study, the researchers used rel-(1R,2S)-1,2-Diphenylethane-1,2-diol (cas: 579-43-1) .

Desymmetrization of rel-(1R,2S)-1,2-Diphenylethane-1,2-diol(cas:579-43-1 Category: alcohols-buliding-blocks) using chiral phosphine catalyst has been reported. Conversion of meso-hydrobenzoin to trans-stillbene oxide by treatment with an aryl sulfonyl chloride and aqueous sodium hydroxide has been reported.

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Botubol-Ares, Jose Manuel;Cordon-Ouahhabi, Safa;Moutaoukil, Zakaria;Collado, Isidro G.;Jimenez-Tenorio, Manuel;Puerta, M. Carmen;Valerga, Pedro published 《Methylene-Linked Bis-NHC Half-Sandwich Ruthenium Complexes: Binding of Small Molecules and Catalysis toward Ketone Transfer Hydrogenation》. The research results were published in《Organometallics》 in 2021.Product Details of 2425-77-6 The article conveys some information:

[Cp^*RuCl(COD)] reacts with LH₂Cl₂ (L = methanebis(3-methylimidazol-2-ylidene)) and LiBu in THF at 65° furnishing the bis-carbene derivative [Cp^*RuCl(L)] (2). This compound reacts with NaBPh₄ in MeOH under dinitrogen to yield the labile dinitrogen-bridged complex [{Cp^*Ru(L)}₂(μ-N₂)][BPh₄]₂ (4). The dinitrogen ligand in 4 is readily replaced by donor mols. leading to the corresponding cationic complexes [Cp^*Ru(X)(L)][BPh₄] (X = MeCN 3, H₂ (6), C₂H₄ (8a), CH₂CHCOOMe 8b, CHPh 9). Attempts to recrystallize 4 from MeNO₂/EtOH solutions gave the nitrosyl derivative [Cp^*Ru(NO)(L)][BPh₄]₂ (5), which was structurally characterized. The allenylidene complex [Cp^*Ru:C:C:CPh₂(L)][BPh₄] (10) was also obtained, and it was prepared by reaction of 2 with HCCC(OH)Ph₂ and NaBPh₄ in MeOH at 60°. 3, 4, And 6 are efficient catalyst precursors for the transfer hydrogenation of a broad range of ketones. The dihydrogen complex 6 proved particularly effective, reaching TOF values up to 455 h^-1 at catalyst loadings of 0.1% mol., with a high functional group tolerance on the reduction of a broad scope of aryl and aliphatic ketones to yield the corresponding alcs.2-Hexyl-1-decanol (cas: 2425-77-6) were involved in the experimental procedure.

2-Hexyl-1-decanol(cas: 2425-77-6) has been shown to inhibit the growth of b16 mouse melanoma cells, suggesting it may be useful for treating skin cancer.Product Details of 2425-77-6 This fatty acid also has transport properties and can form hydrogen bonds with other molecules.

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Name: 4-(2-Phenylpropan-2-yl)phenol《Dual-template magnetic molecularly imprinted polymer-based sorbent for simultaneous and selective detection of phenolic endocrine disrupting compounds in foodstuffs》 was published in 2021. The authors were Bhogal, Shikha;Mohiuddin, Irshad;Kaur, Kuldeep;Lee, Jechan;Brown, Richard J. C.;Malik, Ashok Kumar;Kim, Ki-Hyun, and the article was included in《Environmental Pollution (Oxford, United Kingdom)》. The author mentioned the following in the article:

In this research, an efficient (94.9-99.4%) and fast (5 min) method has been developed and validated for simultaneous identification and quantification of phenolic endocrine disrupting compounds with an emphasis on bisphenol A (BPA) and 4-cumylphenol (4-CP) in food stuffs using a dual-template magnetic, molecularly-imprinted polymer (dt-MMIP). The dt-MMIP was synthesized by a sol-gel method using Fe₃O₄@SiO₂ (as the core) and BPA and 4-CP (as templates). The dt-MMIP was coupled with magnetic solid phase extraction to simultaneously detect BPA and 4-CP in food samples. BPA was measured from bottled water and fruit juice samples samples at 0.36 and 0.24 ng mL^-1, resp., while 4-CP in those samples was 0.33 and 0.16 ng mL^-1, resp. Their detection limits were estimated as 0.04 and 0.05 ng mL^-1, resp. The developed dt-MMIP method was highly reproducible, while maintaining a good cyclability up to 20 cycles. The experimental procedure involved many compounds, such as 4-(2-Phenylpropan-2-yl)phenol (cas: 599-64-4) .

4-(2-Phenylpropan-2-yl)phenol(cas:599-64-4) is a natural product found in Panax ginseng.Name: 4-(2-Phenylpropan-2-yl)phenol 4-(2-Phenylpropan-2-yl)phenol is a useful reagent for preparing and characterizing aromatic polyphosphonates as high refractive index polymers.

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Kobayashi, Daiki;Kodama, Shintaro;Ishii, Youichi published 《An oxidovanadium(IV) complex having a perrhenato ligand: An efficient catalyst for aerobic oxidation reactions of benzylic and propargylic alcohols》 in 2017. The article was appeared in 《Tetrahedron Letters》. They have made some progress in their research.Quality Control of rel-(1R,2S)-1,2-Diphenylethane-1,2-diol The article mentions the following:

An oxidovanadium(IV) complex having a perrhenato ligand [VO(ReO₄)(4,4′-^tBubpy)₂][0.25SO₄·0.5ReO₄] (4,4′-^tBubpy = 4,4′-di-tert-butyl-2,2′-bipyridine) efficiently catalyzes not only dehydrogenative oxidation of benzylic and propargylic mono-alcs. but also oxidative C-C bond cleavage of meso-1,2-diaryl-1,2-ethanediols under atm. mol. oxygen, affording the corresponding carbonyl compounds in good yield. And rel-(1R,2S)-1,2-Diphenylethane-1,2-diol (cas: 579-43-1) was used in the research process.

rel-(1R,2S)-1,2-Diphenylethane-1,2-diol(cas: 579-43-1 Quality Control of rel-(1R,2S)-1,2-Diphenylethane-1,2-diol) has been used in the preparation of trans-methyl meso-hydrobenzoin phosphite.

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Reference of rel-(1R,2S)-1,2-Diphenylethane-1,2-diol《Binuclear Double-Stranded Helicates and Their Catalytic Applications in Desymmetrization of Mesodiols》 was published in 2019. The authors were Chinnaraja, Eswaran;Arunachalam, Rajendran;Suresh, Eringathodi;Sen, Shovan K.;Natarajan, Ramalingam;Subramanian, Palani S., and the article was included in《Inorganic Chemistry》. The author mentioned the following in the article:

The ligand L₁ of 4-methyl-2,6-diformylphenol and L₂ of 4-tert-butyl-2,6-diformylphenol were synthesized through Schiff base condensation with rac-, (R)-(+), or (S)-(-)-1,1′-binaphthyl-2,2′-diamine (BNDA). As a result, the racemic L₁^rac, L₂^rac, and enantiopure L₁^RR, L₁^SS, L₂^RR, and L₂^SS ligands were obtained incorporating Cu(II) and Zn(II) salts by a simple one-pot metal template method. The series of dinuclear complexes of [M₂LX₂] (here, M = Cu²⁺, Zn²⁺; X = acetate ion, chloride ion; L = L₁^RR, L₁^SS, L₁^rac, L₂^RR, L₂^SS, L₂^rac) formulas were obtained in common. Among them, the single crystal x-ray structures for [Zn₂L₁^rac(OAc)₂] and [Zn₂L₁^SSCl₂] complexes were obtained. The detailed crystal structure and the chiroptical studies performed on these complexes dictates a self-sorting behavior in their self-assembly process and illustrate a chirality transfer from the ligand to the metal center on the complexes. The enantiopure dinuclear complexes [M₂L^RRX₂] and [M₂L^SSX₂] generate enantiopure ΛΛ and ΔΔ isomers, resp., but the racemic complexes produce only homochiral ΛΛ and ΔΔ assemblies. The detailed studies based on UFLC (Ultra Fast Liquid Chromatog.), CD, and single crystal x-ray structure together show the absence of heterochiral ΛΔ mesocate. All these complexes are adapted as catalysts for desymmetrization of various mesodiols, and the enantiopure complexes give efficient enantioselectivity in desymmetrization of mesodiols with benzoyl chloride to monobenzoylated ester providing 98% yield and 92% ee.rel-(1R,2S)-1,2-Diphenylethane-1,2-diol (cas: 579-43-1) were involved in the experimental procedure.

rel-(1R,2S)-1,2-Diphenylethane-1,2-diol(cas: 579-43-1 Reference of rel-(1R,2S)-1,2-Diphenylethane-1,2-diol) has been used in the preparation of trans-methyl meso-hydrobenzoin phosphite.

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Bihanic, Camille;Stanovych, Andrii;Pelissier, Franck;Grison, Claude published 《Putting Waste to Work: The Demonstrative Example of Pyrite Quarry Effluents Turned into Green Oxidative Catalysts》. The research results were published in《ACS Sustainable Chemistry & Engineering》 in 2019.Quality Control of rel-(1R,2S)-1,2-Diphenylethane-1,2-diol The article conveys some information:

In the context of exponentially growing problems of pollution and waste, the design of ecofriendly processes for turning the current treatment of effluents into sustainable catalysts represents a great opportunity. Wastewater arising from pyrite quarrying is selected as a model example. The acidity of pyrite effluents leads to solubilization of useful cations: Mn^II and Fe^II/Fe^III. Their chem. properties are an opportunity to promote innovative studies of oxidation in organic synthesis. The controlled addition of NaOH and a co-oxidant (H₂O₂) onto the effluents allows generation of new, oxidative catalysts. MP-AES anal., XPS, XRPD, BET, TEM, HRTEM, and EDX studies were performed to characterize the new and efficient catalysts. Oxidation of alcs. into carbonyl compounds, oxidative cleavage of 1,2-diols, and epoxidation of alkenes are described. The experimental procedure involved many compounds, such as rel-(1R,2S)-1,2-Diphenylethane-1,2-diol (cas: 579-43-1) .

Desymmetrization of rel-(1R,2S)-1,2-Diphenylethane-1,2-diol(cas:579-43-1 Quality Control of rel-(1R,2S)-1,2-Diphenylethane-1,2-diol) using chiral phosphine catalyst has been reported. Conversion of meso-hydrobenzoin to trans-stillbene oxide by treatment with an aryl sulfonyl chloride and aqueous sodium hydroxide has been reported.

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Luo, Hongwei;Zhao, Yaoyao;Li, Yu;Xiang, Yahui;He, Dongqin;Pan, Xiangliang published 《Aging of microplastics affects their surface properties, thermal decomposition, additives leaching and interactions in simulated fluids》. The research results were published in《Science of the Total Environment》 in 2020.Electric Literature of C16H34O The article conveys some information:

Most microplastics (MPs) have undergone extensive aging in the environment. Aged MPs exhibit different phys. and chem. properties from unaged ones. Here, we studied the effects of accelerated aging on the characteristics and pyrolysis of com. pigmented MPs, as well as pigments leaching and their interactions in simulated gastric and intestinal fluids of mammals. We report that the carbonyl index, surface area, and color change of MPs increased after aging treatment. Cracks and fragmentation of MPs facilitated the accessibility of light and oxygen to internal layer and therefore accelerated the aging process. TGA/GC-MS anal. showed that the high temperature resistance of MPs decreased after aging. Thermal decomposition of pigments and polyethylene occurred in temperature ranges of 340-406°C and 406-550°C, resp. Mono (di)-alkenes and saturated alkanes were the thermal decomposition products of polyethylene. Aging of MPs also caused an increased release of pigments and prolonged aging time led to more release in simulated fluids. Pigments would result in fluorescence quenching of the enzymes through binding interactions once they were released from MPs into simulated fluids. Charge neutralization and polymer bridging accounted for the formation of pigment-enzyme complexes and flocs. These novel findings will allow us to better assess how aging process affects the characteristics, leaching, and toxicity of MPs.2-Hexyl-1-decanol (cas: 2425-77-6) were involved in the experimental procedure.

2-Hexyl-1-decanol(cas: 2425-77-6) may be employed as an organic solvent to study the extraction of non-polar acidic drugs from human plasma by parallel artificial liquid membrane extraction (PALME). Electric Literature of C16H34O

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Reference of 4-(2-Phenylpropan-2-yl)phenolIn 2019, Tanaka, Kumpei;Gotoh, Hiroaki published 《Development of the radical C-O coupling reaction of phenols toward the synthesis of natural products comprising a diaryl ether skeleton》. 《Tetrahedron》published the findings. The article contains the following contents:

Compounds comprising a diaryl ether skeleton exist among natural phenols. The diaryl ether skeleton is thought to be biosynthesized through the coupling of two or more phenols. It is an important structural feature in medicines and agrochems., and it is imperative to develop methods for constructing such skeletons in organic synthesis. However, by the synthesis method through the coupling of phenols, coupling occurs preferentially at the ortho-substituted carbon atom of phenols. In this study, various radical-generating reagents and conditions were investigated with the aim of developing a short-step construction method of the diaryl ether skeleton by the radical homo-coupling of two phenol mols. In addition, cross-coupling reactions between radicals of 2,4,6-tri-tert-butylphenol and p-substituted phenol were conducted to synthesize eight C (ortho)-O coupling products. Based on the results, a computational chem. approach was employed to verify the cause of C (ortho)-O bond formation. And 4-(2-Phenylpropan-2-yl)phenol (cas: 599-64-4) was used in the research process.

4-(2-Phenylpropan-2-yl)phenol(cas:599-64-4) is a natural product found in Panax ginseng.Reference of 4-(2-Phenylpropan-2-yl)phenol 4-(2-Phenylpropan-2-yl)phenol is a useful reagent for preparing and characterizing aromatic polyphosphonates as high refractive index polymers.

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Today I want to share an article with you. The article is 《Acridine-Based SNS-Ruthenium Pincer Complex-Catalyzed Borrowing Hydrogen-Mediated C-C Alkylation Reaction: Application to the Guerbet Reaction》,you can find this article in 《Synlett》. The following contents are mentioned:

SNS-based ruthenium pincer catalysts were applied in a Guerbet condensation reaction of primary alcs. to give β-alkylated dimeric alcs. I [R = Et, n-Bu, n-hexyl, etc.; R¹ = Me, n-Bu, n-hexyl, etc.] in good yields. The ability of these complexes to convert ethanol into butanol was also investigated. The work was then extended toward the C-alkylation of secondary alcs. with primary alcs. to give α-alkylated ketones II [R² = H, 4-OMe, 4-Me, etc. R³ = Ph, 4-ClC₆H₄, 4-FC₆H₄, etc.]. Several control experiments showed the involvement of borrowing hydrogen in the protocol. To complete the study, the researchers used 2-Hexyl-1-decanol (cas: 2425-77-6) .

2-Hexyl-1-decanol(cas: 2425-77-6) is a fatty acid that is found in the essential oils of plants and has been shown to have fungicidal properties.Electric Literature of C16H34O It has also been shown to inhibit the growth of Candida glabrata when used as a cationic surfactant.

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