Tag: 200-300

In 2013,Zheng, Xuhua; Gao, Xu; Zheng, Lu published 《Study on determination of industrial casein content by biuret-spectrophotometric method》.Guangdong Huagong published the findings.Safety of Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate The information in the text is summarized as follows:

The paper studied the determination of content of casein produced from milk residue by biuret-spectrophotometric method. The results showed almost the same as those by Kjeldahl determination method. In the experiment, the researchers used many compounds, for example, Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5Safety of Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate)

Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5) is a ferroelectric crystal with a high piezoelectric effect and electromechanical coupling coefficient. Safety of Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate As a Biuret reagent, it is used to measure the protein concentration. Furthermore, it is used as laxative and is also used in food industry.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

《Ruthenium-Catalyzed Carbonylative Coupling of Anilines with Organoboranes by the Cleavage of Neutral Aryl C-N Bondã€?was published in Organic Letters in 2020. These research results belong to Xu, Jian-Xing; Zhao, Fengqian; Yuan, Yang; Wu, Xiao-Feng. Safety of 4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane The article mentions the following:

Herein, the first ruthenium-catalyzed Suzuki-type carbonylative reaction of electronically neutral anilines I (R1 = H; R2 = Me, F, Cl, t-Bu, H; R3 = H, F; R1R2 = -CH=CH-CH=CH-) and N,N-dimethyl-2-(pyrimidin-2-yl)aniline via C(aryl)-N bond cleavage was reported. Without any ligand and base, diaryl ketones II (R4 = 3-bromophenyl, 2,4,6-trimethylphenyl, 2-naphthyl, etc.) and phenyl(2-(pyrimidin-2-yl)phenyl)methanone can be obtained in moderate to high yields by using Ru3(CO)12 as the catalyst and chelation assisted by pyridine. The pyridine ring has a significant effect on both high efficiency and high regioselectivity in the cleavage of the aryl C-N bond in anilines. The experimental part of the paper was very detailed, including the reaction process of 4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane(cas: 24388-23-6Safety of 4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane)

4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane(cas: 24388-23-6) can be used to prepare sulfinamide derivatives by reacting with diethylaminosulfur trifluoride (DAST) and potassium phenyltrifluoroborate.Safety of 4,4,5,5-Tetramethyl-2-phenyl-1,3,2-dioxaborolane

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wang, Zhaobin; Yang, Ze-Peng; Fu, Gregory C. published an article in 2021. The article was titled 《Quaternary stereocentres via catalytic enantioconvergent nucleophilic substitution reactions of tertiary alkyl halidesã€? and you may find the article in Nature Chemistry.Formula: C4H12KNaO10 The information in the text is summarized as follows:

The development of efficient methods, particularly catalytic and enantioselective processes, for the construction of all-carbon quaternary stereocentres is an important (and difficult) challenge in organic synthesis due to the occurrence of this motif in a range of bioactive mols. One conceptually straightforward and potentially versatile approach is the catalytic enantioconvergent substitution reaction of a readily available racemic tertiary alkyl electrophile by an organometallic nucleophile; however, examples of such processes are rare. Here we demonstrate that a nickel-based chiral catalyst achieves enantioconvergent couplings of a variety of tertiary electrophiles (cyclic and acyclic α-halocarbonyl compounds) with alkenylmetal nucleophiles to form quaternary stereocentres with good yield and enantioselectivity under mild conditions in the presence of a range of functional groups. These couplings, which probably proceed via a radical pathway, provide access to an array of useful families of organic compounds, including intermediates in the total synthesis of two natural products, (-)-eburnamonine and madindoline A. The experimental part of the paper was very detailed, including the reaction process of Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5Formula: C4H12KNaO10)

Potassium sodium (2R,3R)-2,3-dihydroxysuccinate tetrahydrate(cas: 6381-59-5) is a ferroelectric crystal with a high piezoelectric effect and electromechanical coupling coefficient. Formula: C4H12KNaO10 It may be used as a constituent to prepare DNS (3,5- dinitrosalicylic acid) reagent and Fehling′s solution B, which are used in the determination of reducing sugar.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wang, Jia-Xin; Ge, Wei; Fu, Ming-Chen; Fu, Yao published an article on February 25 ,2022. The article was titled 《Photoredox-Catalyzed Allylic Defluorinative Alkoxycarbonylation of Trifluoromethyl Alkenes through Intermolecular Alkoxycarbonyl Radical Additionã€? and you may find the article in Organic Letters.Formula: C12H20O6 The information in the text is summarized as follows:

Herein, a photoredox-catalyzed allylic defluorinative alkoxycarbonylation of trifluoromethyl alkenes ArC(CF3):CH2 (Ar = 4-BrC6H4, naphthalen-2-yl, 6-methoxypyridin-3-yl, etc.) enabled by intermol. alkoxycarbonyl radical addition is disclosed. A wide variety of alc. oxalate derivatives ROC(O)CO2H (R = Me, t-Bu, cyclopentyl, L-menthyl, N-Boc-piperidin-4-yl, etc.) was amenable, affording various β-gem-difluoroalkene esters ArC(:CF2)CH2COOR with excellent functional group tolerance. Notably, the potential synthetic value of this method is highlighted by successful late-stage modification for bioactive mols. In the experimental materials used by the author, we found ((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol(cas: 20880-92-6Formula: C12H20O6)

((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol(cas: 20880-92-6) is a useful reactant for examining the effectiveness of sulfamate and sulfamide groups for the inhibition of carbonic anhydrase-​II (CA-​II)â€? And it is used as chiral auxiliaries in Michael and Aldol addition reactions.Formula: C12H20O6

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Anaby, Aviel; Butschke, Burkhard; Ben-David, Yehoshoa; Shimon, Linda J. W.; Leitus, Gregory; Feller, Moran; Milstein, David published an article in Organometallics. The title of the article was 《B-H Bond Cleavage via Metal-Ligand Cooperation by Dearomatized Ruthenium Pincer Complexesã€?Application In Synthesis of 2-(3,4-Dimethylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane The author mentioned the following in the article:

Organic derivatives of boronic acid are widely used reagents useful in various synthetic applications. A fundamental understanding and the exploration of new reaction pathways of boronic reagents with organometallic systems hold promise for useful advancement in chem. catalysis. Herein the authors present the reactions of simple boranes with dearomatized Ru pincer complexes based on PNP (2,6-bis(di-tert-butylphosphinomethyl)pyridine) or PNN (2-(di-tert-butylphosphinomethyl)-6-(diethylaminomethyl)pyridine) ligands. NMR studies revealed dehydrogenative addition of the borane B-H bond across the metal center and the ligand. Remarkably, new complexes were observed, which contain the boryl moiety at the benzylic C of the pincer ligand arm. X-ray crystal structures of new dearomatized boryl pincer complexes were obtained, and DFT calculations revealed mechanistic details of the adduct formation process through a dehydrogenative pathway. Catalytic aryl-boron coupling reactions were explored. The new boryl pincer systems may possibly be useful in future post-modification techniques for Ru pincer complexes, as well as in catalytic B-B and B-C coupling reactions. In the experimental materials used by the author, we found 2-(3,4-Dimethylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane(cas: 401797-00-0Application In Synthesis of 2-(3,4-Dimethylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane)

2-(3,4-Dimethylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane(cas: 401797-00-0) belongs to hydroxy-containing compounds. Hydroxy-containing compounds engage in intermolecular hydrogen bonding increasing the electrostatic attraction between molecules and thus to higher boiling and melting points than found for compounds that lack this functional group. Organic compounds, which are often poorly soluble in water, become water-soluble when they contain two or more hydroxy groups, as illustrated by sugars and amino acid.Application In Synthesis of 2-(3,4-Dimethylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Recommanded Product: (3-Chlorophenyl)(phenyl)methanolOn November 30, 2011 ,《Lithium perchlorate-nitromethane-promoted alkylation of anilines with arylmethanolsã€?appeared in Molecular Diversity. The author of the article were Zhou, Jun; Mao, Hai-Feng; Wang, Lu; Zou, Jian-Ping; Zhang, Wei. The article conveys some information:

A new application of LiClO4-nitromethane (LPNM) for the formation of aromatic C-N and C-C bonds is introduced. LPNM-promoted reactions of anilines with diarylmethanols selectively generate N-alkylated anilines or mono and double Friedel-Crafts alkylation products under different conditions by changing the reaction time, reaction temperature, and the ratio of the reactants. This method does not require the use of transition metal catalysts to prepare alkylated aniline derivatives In the part of experimental materials, we found many familiar compounds, such as (3-Chlorophenyl)(phenyl)methanol(cas: 63012-03-3Recommanded Product: (3-Chlorophenyl)(phenyl)methanol)

(3-Chlorophenyl)(phenyl)methanol(cas: 63012-03-3) belongs to hydroxy-containing compounds. Hydroxy groups participate in the dehydration reactions that link simple biological molecules into long chains.Recommanded Product: (3-Chlorophenyl)(phenyl)methanol The joining of a fatty acid to glycerol to form a triacylglycerol removes the −OH from the carboxy end of the fatty acid.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Product Details of 401797-00-0On November 2, 2018 ,《Palladium-Catalyzed Synthesis of 2,3-Diaryl-N-methylindoles from ortho-Alkynylanilines and Aryl Pinacol Boronic Estersã€?appeared in Organic Letters. The author of the article were Luo, Yue-Gui; Basha, R. Sidick; Reddy, Daggula Mallikarjuna; Xue, Yong-Jing; Chen, Te-Hsuan; Lee, Chin-Fa. The article conveys some information:

A palladium-catalyzed synthesis of 2,3-diaryl-N-methylindoles from o-alkynylanilines and aryl pinacol boronic esters was developed. The system possesses high functional group tolerance and a broad substrate scope with a variety of aryl pinacol boronic esters to provide valuable 2,3-diaryl-N-methylindoles in moderate to good yields. Remarkably, the sequential reaction controlled by iridium-catalyzed C-H borylation or palladium-catalyzed alkynylation followed by the present palladium-catalyzed C3 arylation reaction provided functionalized 2,3-diaryl-N-methylindoles in good yields. In the experiment, the researchers used many compounds, for example, 2-(3,4-Dimethylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane(cas: 401797-00-0Product Details of 401797-00-0)

2-(3,4-Dimethylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane(cas: 401797-00-0) belongs to hydroxy-containing compounds. Hydroxy groups participate in the dehydration reactions that link simple biological molecules into long chains.Product Details of 401797-00-0 The joining of a fatty acid to glycerol to form a triacylglycerol removes the −OH from the carboxy end of the fatty acid.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Safety of ((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanolOn June 10, 2022, Chen, Yi-Xuan; He, Jun-Tao; Wu, Mei-Chun; Liu, Zhi-Lin; Tang, Kai; Xia, Peng-Ju; Chen, Kai; Xiang, Hao-Yue; Chen, Xiao-Qing; Yang, Hua published an article in Organic Letters. The article was 《Photochemical Organocatalytic Aerobic Cleavage of C=C Bonds Enabled by Charge-Transfer Complex Formationã€? The article mentions the following:

A novel visible-light-driven organocatalytic protocol to access aerobic oxidative cleavage of olefins, e.g., 4-benzylidene-2,6-di-tert-butylcyclohexa-2,5-dien-1-one promoted by sodium benzene sulfinate, is described. An array of alkenes smoothly delivered the corresponding aldehydes RC(O)R1 (R = naphth-2-yl, 2-chlorophenyl, 3,4-dimethoxyphenyl, etc.; R1 = H) and ketones, e.g., 2, 6-di-tert-butylcyclohexa-2, 5-diene-1,4-dione under transition-metal-free conditions. Notably, α-halo-substituted styrenes, e.g., (1-bromovinyl)benzene proceeded with photoinduced oxidation to finally afford α-halo-acetophenones, e.g., 2-bromo-1-phenylethan-1-one with halogen migration. Crucial to this oxidation was the formation of charge-transfer complexes between sodium benzene sulfinate with mol. O2 to ultimately deliver the carbonyl products. In the experiment, the researchers used many compounds, for example, ((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol(cas: 20880-92-6Safety of ((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol)

((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol(cas: 20880-92-6) is a useful reactant for examining the effectiveness of sulfamate and sulfamide groups for the inhibition of carbonic anhydrase-​II (CA-​II)â€?Safety of ((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol And it is used as chiral auxiliaries in Michael and Aldol addition reactions.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

COA of Formula: C12H20O6On May 4, 2020 ,《Self-Assembled Nucleotide/Saccharide-Tethering Polycation-Based Nanoparticle for Targeted Tumor Therapyã€?appeared in ACS Materials Letters. The author of the article were Yu, Dan; Zhang, Na; Liu, Siyuan; Hu, Wenting; Nie, Jing-Jun; Zhang, Kai; Yu, Bingran; Wang, Zhen-Gang; Xu, Fu-Jian. The article conveys some information:

Development of novel concepts to construct drug vehicles for efficient encapsulation of hydrophobic drugs and targeted therapy is highly desirable to biomedical science. It remains a challenge to create effective noncovalent linkage between the components within the drug vectors. In this work, we report a supramol. approach to construct multifunctional nanoparticles, which combined tumor-targeting capability via saccharide, cell penetration via pos.-charged surface, and chemotherapeutic function via drug delivery for cancer therapy. A endogenous self-associating nucleotide (guanosine monophosphate) noncovalently bonded with a hydrophobic nucleoside analog drug (clofarabine) to form nanofibrils, which were transformed to spherical nanoparticles by assembling with a fructose/ethanolamine-functionalized starlike poly(glycidyl methacrylate)-based cationic polymer. Noncovalent cavities within the nanoparticles were created, through the nucleotide self-association, and acted as linkage between the hydrophilic cationic polymer and the drug. The saccharide-tethering polycation and nucleotide components were labeled with fluorescent dyes, resp., to image the endocytosis and biodistribution. In vitro and in vivo results show that the functional nanoparticles exhibited good capabilities of the targeted accumulation of the nanoparticles and delivery of drugs in cancer cells and tumor sites, leading to a robust anticancer effect. In addition to this study using ((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol, there are many other studies that have used ((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol(cas: 20880-92-6COA of Formula: C12H20O6) was used in this study.

((3aS,5aR,8aR,8bS)-2,2,7,7-Tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4′,5′-d]pyran-3a-yl)methanol(cas: 20880-92-6) is a useful reactant for examining the effectiveness of sulfamate and sulfamide groups for the inhibition of carbonic anhydrase-​II (CA-​II)â€?COA of Formula: C12H20O6 And it is used as chiral auxiliaries in Michael and Aldol addition reactions.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

《Microwave-assisted nickel(II) acetylacetonate-catalyzed arylation of aldehydes with arylboronic acidsã€?was written by Chen, Wen; Baghbanzadeh, Mostafa; Kappe, C. Oliver. Synthetic Route of C13H11ClO And the article was included in Tetrahedron Letters on April 6 ,2011. The article conveys some information:

Applying sealed vessel microwave heating at 180 °C in toluene the arylation of aromatic and aliphatic aldehydes with arylboronic acids using 1-2 mol % of Ni(acac)2 as a catalyst can be performed efficiently within 10-30 min providing the desired diarylmethanols or benzyl alcs. in good yields. In the experimental materials used by the author, we found (3-Chlorophenyl)(phenyl)methanol(cas: 63012-03-3Synthetic Route of C13H11ClO)

(3-Chlorophenyl)(phenyl)methanol(cas: 63012-03-3) belongs to hydroxy-containing compounds. Hydroxy-containing compounds engage in intermolecular hydrogen bonding increasing the electrostatic attraction between molecules and thus to higher boiling and melting points than found for compounds that lack this functional group.Synthetic Route of C13H11ClO Organic compounds, which are often poorly soluble in water, become water-soluble when they contain two or more hydroxy groups, as illustrated by sugars and amino acid.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts