Month: October 2022

Manna, Kartic; Ganguly, Tanusree; Baitalik, Sujoy; Jana, Ranjan published the artcile< Visible-Light- and PPh3-Mediated Direct C-N Coupling of Nitroarenes and Boronic Acids at Ambient Temperature>, Electric Literature of 30095-98-8, the main research area is secondary amine photochem preparation triphenylphosphine mediator; nitroarene boronic acid intermol reductive amination.

Herein a metal-free, visible-light- and triphenylphosphine-mediated intermol., reductive amination between nitroarenes and boronic acids at ambient temperature without any photocatalyst is presented. Mechanistically, a slow reduction of nitroarenes to a nitroso and, finally, a nitrene intermediate occurs that leads to the amination product with concomitant 1,2-aryl/-alkyl migration from a boronate complex. A wide range of nitroarenes underwent C-N coupling with aryl-/alkylboronic acids providing high yields.

Organic Letters published new progress about Amination catalysts (photochem). 30095-98-8 belongs to class esters-buliding-blocks, and the molecular formula is C9H9NO4, Electric Literature of 30095-98-8.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Zhang, Ming; Gao, Bin; Yao, Ying; Xue, Yingwen; Inyang, Mandu published the artcile< Synthesis, characterization, and environmental implications of graphene-coated biochar>, Computed Properties of 112-63-0, the main research area is synthesis characterization graphene coated biochar.

The biochar technol. was combined with the emerging graphene technol. to create a new engineered graphene-coated biochar from cotton wood. The biomass feedstock was 1st treated with graphene/pyrene-derivative and was then annealed at 600° in a quartz tube furnace under N environment. Laboratory characterization with different microscopy and spectrometry tools showed that the graphene sheets were soldered by the pyrene mols. on the biochar surface during the annealing process. Thermogravimetric anal. showed that the graphene skin could improve the thermal stability of the biochar, making the engineered biochar a better C sequester for large scale land applications. Batch sorption exptl. results indicated that the graphene-coated biochar has excellent adsorption ability of polycyclic aromatic hydrocarbons (PAHs) with a maximum Methylene Blue adsorption capacity of 174 mg/g, which is >20 times higher than that of the unmodified cotton wood biochar and comparable to those of some phys. or chem. activated carbons. The enhanced adsorption of Methylene Blue on the graphene-coated biochar is mainly controlled by the strong π-π interactions between aromatic mols. and the graphene sheets on biochar surface. It is anticipated that this novel, facile, and low-cost method can be expanded to other C-rich materials to create engineered biochar for various environmental applications.

Science of the Total Environment published new progress about Adsorptive wastewater treatment. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Computed Properties of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Crispino, Gerard A.; Jeong, Kyu Sung; Kolb, Hartmuth C.; Wang, Zhi Min; Xu, Daqiang; Sharpless, K. Barry published the artcile< Improved enantioselectivity in asymmetric dihydroxylations of terminal olefins using pyrimidine ligands>, Synthetic Route of 112-63-0, the main research area is enantioselectivity dihydroxylation olefin pyrimidine ligand; asym dihydroxylation olefin pyrimidine ligand; diol asym synthesis.

A new class of cinchona alkaloid derivatives, 2,5-diphenyl-4,6-bis(9-O-dihydroquinidyl)pyrimidine and its pseudoenantiomer 2,5-diphenyl-4,6-bis(9-O-dihydroquinyl)pyrimidine, was found to give improved enantioselectivity in the osmium catalyzed asym. dihydroxylation of mono-substituted terminal olefins. Mol. modeling and ligand structural variation studies were carried out in an attempt to understand the high enantioselectivities observed

Journal of Organic Chemistry published new progress about Alkenes Role: RCT (Reactant), RACT (Reactant or Reagent). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Synthetic Route of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Rachedi, Khadidja Otmane; Ouk, Tan-Sothea; Bahadi, Rania; Bouzina, Abdeslem; Djouad, Seif-Eddine; Bechlem, Khaoula; Zerrouki, Rachida; Ben Hadda, Taibi; Almalki, Faisal; Berredjem, Malika published the artcile< Synthesis, DFT and POM analyses of cytotoxicity activity of α-amidophosphonates derivatives: Identification of potential antiviral O,O-pharmacophore site>, Reference of 2743-40-0, the main research area is acylaminoester preparation phosphorylation ethylphosphite; amidophosphonate preparation anticancer agent optimized geometry DFT; amino acid acylation phosphorylation reaction.

The authors studied the cytotoxic activity of three compounds prepared starting from amino acids. These derivatives were evaluated for their in vitro antitumor activity against human cell lines (PRI, K562 and JURKAT). Their cytotoxicity was also evaluated at different concentrations on several cell lines. However, DFT calculation was used to analyze the electronic and geometric characteristics. The HOMO, LUMO and gap energies were also deduced for the stable structure for each compound These results will be correlated with the exptl. values. The bioinformatic POM (Petra/Osiris/Molinspiration) analyses of the relative cytotoxicity of these derivatives are reported in comparison to Chlorambucil.

Journal of Molecular Structure published new progress about Amino acids Role: RCT (Reactant), RACT (Reactant or Reagent). 2743-40-0 belongs to class esters-buliding-blocks, and the molecular formula is C8H18ClNO2, Reference of 2743-40-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Bezerra, Rita de Cassia de Freitas; Rodrigues, Francisco Eduardo Arruda; Arruda, Tathilene Bezerra Mota Gomes; Moreira, Francisca Belkise de Freitas; Chaves, Pedro Oribio Bastos; Assuncao, Joao Carlos da Costa; Ricardo, Nagila Maria Pontes Silva published the artcile< Babassu-oil-based biolubricant: Chemical characterization and physicochemical behavior as additive to naphthenic lubricant NH-10>, SDS of cas: 112-63-0, the main research area is oil naphthenic lubricant additive physicochem behavior.

In the search of new bioproducts, which could substitute petroleum derivatives and with capability to attend industrial demand, the present research reports the synthesis of babassu-oil-based biolubricant (Orbignya speciosa M), its characterization, and the impact in mineral lubricant properties when the biolubricant was used as additive. The botanical species was submitted to chromatog. anal., and the oil content was predominantly saturated Spectroscopy anal. confirmed the success of the reaction, and the biolubricant consisted of a mixture of mono, di and tri esters of trimethylolpropane. The thermogravimetric behavior of the babassu biolubricant was also studied. The gaseous products evolved during the process were analyzed by IR spectroscopy and the volatilization and combustion process could be described. Blends between babassu biolubricant and mineral basic oil NH-10 were prepared in the proportions of 3, 5 and 10% volume/volume, and physicochem. properties as specific mass, kinematic viscosity at 40 and 100 °C, and flow point were evaluated. For the proportions used in the evaluation, babassu biolubricant could be pointed as a secure additive for mineral oil lubricant NH-10. The characterization of babassu biolubricant, the thermogravimetric behavior, and spectroscopy anal. of the gaseous products evolved, as well as the use as a possible additive and points to a possible use for biolubricants.

Industrial Crops and Products published new progress about Attalea speciosa. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, SDS of cas: 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Huang, Huan-Ming; Bellotti, Peter; Erchinger, Johannes E.; Paulisch, Tiffany O.; Glorius, Frank published the artcile< Radical Carbonyl Umpolung Arylation via Dual Catalysis>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is aryl benzoate preparation; aldehyde aryl bromide carbonyl umpolung arylation nickel catalyst photoredox.

A series of aryl benzoates I [R = iPr, tBu, cyclohexyl, etc.; R1 = 4-NCC6H4, 2-NCC6H4, 2-pyridyl, etc.] via dual nickel and photoredox catalyzed radical carbonyl umpolung arylation of aldehydes and aryl bromides was reported. This redox-neutral approach provided a complementary method to construct Grignard-type products from (hetero)aryl bromides and aliphatic aldehydes, without the need for prefunctionalization. Sequential activation, hydrogen atom transfer and halogen atom transfer process could directly converted aldehydes to the corresponding ketyl radicals, which further react with aryl-nickel intermediates in an overall polarity-reversal process. This radical strategy tolerated-among others-acidic functional groups, heteroaryl motifs and sterically hindered substrates and was applied in the late-stage modification of drugs and natural products.

Journal of the American Chemical Society published new progress about Aldehydes Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Karami, Afshin; Hossienpour, Maryam; Mohammadi Noori, Ehsan; Rahpyma, Mehdi; Najafi, Khadijeh; Kiani, Amir published the artcile< Synergistic Effect of Gefitinib and Temozolomide on U87MG Glioblastoma Angiogenesis>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is gefitinib temozolomide glioblastoma angiogenesis synergistic effect.

One of the most common and deadly brain tumors is Glioblastoma multiforme (GBM). Due to recent advances in angiogenesis and its related key factors, this process as a hallmark in glioblastoma has attracted more consideration from the research community. Temozolomide (TMZ) as the first-line treatment used to treat GBM but, resistance to TMZ limits its effectiveness and the need for better treatments is still felt. Therefore, we aimed to examine the Synergistic effects of Gefitinib (GFI) in combination with Temozolomide on VEGF and MMPs in glioma cell line (U87MG). Our results displayed that GFI could induce cytotoxic effects in U87MG with IC50 values of 11 μM. U87MG cells produced large amounts of VEGF without any stimuli, and the results showed that GFI in combination with TMZ caused a significant decrease in VEGF production in these cells. In this study, we demonstrated that after treating with TMZ and GFI, there was more decrease in the levels of MMP 2 and 9 secretions in cells than treatment with GFI and TMZ doses alone. This study indicates synergistic effects of GFI plus TMZ against glioma are mediated by the potentiated anti-angiogenesis. Therefore, it can be considered as a promising plan for future studies.

Nutrition and Cancer published new progress about Angiogenesis. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

White, James D.; Lincoln, Christopher M.; Yang, Jongtae; Martin, William H. C.; Chan, David B. published the artcile< Total Synthesis of Solandelactones A, B, E, and F Exploiting a Tandem Petasis-Claisen Lactonization Strategy>, Application In Synthesis of 617-55-0, the main research area is solandelactone A B E F total synthesis; Petasis Claisen lactonization tandem total synthesis solandelactone; Nozaki Hiyama Kishi coupling total synthesis solandelactone; Simmons Smith cyclopropanation total synthesis solandelactone; methylenation Petasis total synthesis solandelactone.

Solandelactones A, B, E, and F I (R = α-OH, R1 = H; R = β-OH, R1 = H; R = α-OH, R12 = bond; R = β-OH, R12 = bond, resp.) were synthesized using Nozaki-Hiyama-Kishi coupling of iododiene (3S,1E,5Z)-ICH:CHCH(OH)CH2CH:CH(CH2)4Me with aldehydes II obtained by oxidation of the corresponding alcs. Key steps in the synthesis of the latter alcs. (i) a Nagao asym. acetate aldol reaction of aldehyde (E)-Me3CPh2SiOCH2CH:CHCHO with thionothiazolidine III to set in place an alc. that becomes the (7S) lactone center of solandelactones, (ii) a Simmons-Smith cyclopropanation of (3R,4E)-Me3CPh2SiOCH2CH:CHCH(OH)CH2CON(MeO)Me directed by this alc., and (iii) Petasis methylenation of cyclic carbonate IV in tandem with a Claisen rearrangement that generates the octenalactone portion of solandelactones. Synthesis of solandelactones A, B, E, and F confirmed their gross structure and absolute configuration at C7, 8, 10, and 14 but showed that alc. configuration at C11 must be reversed in pairs, A/B and E/F, from the previous assignment made to these hydroid metabolites. A biogenesis of solandelactones is proposed for these C22 oxylipins that parallels a hypothesis put forward previously to explain the origin of C20 cyclopropane-containing algal products.

Journal of Organic Chemistry published new progress about Aldol addition, stereoselective (Nagao). 617-55-0 belongs to class esters-buliding-blocks, and the molecular formula is C6H10O5, Application In Synthesis of 617-55-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Gualtierotti, Jean-Baptiste; Pasche, Delphine; Wang, Qian; Zhu, Jieping published the artcile< Phosphoric acid catalyzed desymmetrization of bicyclic bislactones bearing an all-carbon stereogenic center: Total syntheses of (-)-rhazinilam and (-)-leucomidine B>, HPLC of Formula: 30095-98-8, the main research area is bicyclic bislactone alc desymmetrization ring opening phosphate catalyst; rhazinilam asym total synthesis; leucomidine B asym total synthesis; alkaloids; natural products; organocatalysis; synthetic methods; total synthesis.

In the presence of a catalytic amount of an imidodiphosphoric acid, enantioselective desymmetrization of bicyclic bislactones by reaction with alcs. took place smoothly to afford enantiomerically enriched monoacids having an all-C stereogenic center. Concise catalytic enantioselective syntheses of both (-)-rhazinilam and (-)-leucomidine B were subsequently developed using Me (S)-4-ethyl-4-formylpimelate monoacid as a common starting material.

Angewandte Chemie, International Edition published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 30095-98-8 belongs to class esters-buliding-blocks, and the molecular formula is C9H9NO4, HPLC of Formula: 30095-98-8.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Kuwano, Ryoichi; Ikeda, Ryuhei; Hirasada, Kazuki published the artcile< Catalytic asymmetric hydrogenation of quinoline carbocycles: unusual chemoselectivity in the hydrogenation of quinolines>, Application of C19H34O2, the main research area is chiral ruthenium catalyst stereoselective hydrogenation quinoline; tetrahydroquinoline stereoselective preparation.

The reduction of quinolines selectively took place on their carbocyclic rings to give 5,6,7,8-tetrahydroquinolines, when the hydrogenation was conducted in the presence of a Ru(η3-methallyl)2(cod)-PhTRAP catalyst. The chiral ruthenium catalyst converted 8-substituted quinolines into chiral 5,6,7,8-tetrahydroquinolines with up to 91 : 9 er.

Chemical Communications (Cambridge, United Kingdom) published new progress about Enantioselective synthesis. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Application of C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics