Tag: M.W=100-150

An article Novel open-chain crown ether bridged diphosphates as chelating ligands for lanthanides extraction in supercritical carbon dioxide WOS:000462690700006 published article about RARE-EARTH-ELEMENTS; FLUID EXTRACTION; SOLVENT-EXTRACTION; MOLECULAR DESIGN; BETA-DIKETONES; OPTIMIZATION; METALS; GLYCOL; IONS; SOLUBILITIES in [Duan, Di] Guangdong Ind Tech Coll, Ctr Guangdong Higher Educ Engn & Technol Dev Spec, Dept Food & Biol Engn, Guangzhou 510300, Guangdong, Peoples R China; [Duan, Di; Su, Baogen; Bao, Zongbi; Yang, Yiwen; Ren, Qilong] Zhejiang Univ, Coll Chem & Biol Engn, Minist Educ, Key Lab Biomass Chem Engn, Hangzhou 310027, Zhejiang, Peoples R China in 2019.0, Cited 36.0. COA of Formula: C7H8O. The Name is Benzyl Alcohol. Through research, I have a further understanding and discovery of 100-51-6

A series of highly CO2-soluble open-chain crown ether bridged diphosphates were designed and prepared as chelating ligands which were used to extract lanthanide ions from cellulose paper into supercritical CO2 (ScCO2). These ligands were designed by introducing different ester side chains and joining the two phosphorus groups with different length of ethylene oxide group which could provide enhanced solubility and complexation ability. The solubility data of these synthesized diphosophates in ScCO2 were measured at 313.15 K and 10.65 MPa-13.69 MPa. Lanthanides metal ions including La3+, Ce3+, Pr3+, Nd3+, Sm3+, Gd3+, Er3+, and Yb3+ were successfully removed from the solid matrix by supercritical fluid extractions using these chelating ligands at 313.15 K and 20 MPa. The extraction efficiency of metal ion was affected by chelating ligands’ side chain, which increased from 68% to 94% mainly driven by the increased solubility capability.

COA of Formula: C7H8O. About Benzyl Alcohol, If you have any questions, you can contact Duan, D; Su, BG; Bao, ZB; Yang, YW; Ren, QL or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

An article Rhodium(i)-catalyzed C6-selective C-H alkenylation and polyenylation of 2-pyridones with alkenyl and conjugated polyenyl carboxylic acids WOS:000496188700019 published article about DECARBOXYLATIVE COUPLING REACTIONS; DECARBONYLATIVE DIRECT OLEFINATION; C3-SELECTIVE DIRECT ALKYLATION; CINNAMIC-ACIDS; OXIDATIVE OLEFINATION; REGIOSELECTIVE SYNTHESIS; DIRECT ARYLATION; BOND ACTIVATION; DIRECTING GROUP; OXIME ESTERS in [Zhao, Haoqiang; Xu, Xin; Luo, Zhenli; Cao, Lei; Li, Bohan; Li, Huanrong; Xu, Lijin] Renmin Univ China, Dept Chem, Beijing 100872, Peoples R China; [Xu, Lijin; Fan, Qinghua] Chinese Acad Sci, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China; [Xu, Lijin; Fan, Qinghua] Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China; [Zhao, Haoqiang; Walsh, Patrick J.] Univ Penn, Dept Chem, Penn Merck Lab High Throughput Expt, Ray & Diana Vagelos Labs, 231 South 34th St, Philadelphia, PA 19104 USA in 2019, Cited 156. Recommanded Product: 80-59-1. The Name is (E)-2-Methylbut-2-enoic acid. Through research, I have a further understanding and discovery of 80-59-1

A versatile Rh(i)-catalyzed C6-selective decarbonylative C-H alkenylation of 2-pyridones with readily available, and inexpensive alkenyl carboxylic acids has been developed. This directed dehydrogenative cross-coupling reaction affords 6-alkenylated 2-pyridones that would otherwise be difficult to access using conventional C-H functionalization protocols. The reaction occurs with high efficiency and is tolerant of a broad range of functional groups. A wide scope of alkenyl carboxylic acids, including challenging conjugated polyene carboxylic acids, are amenable to this transformation and no addition of external oxidant is required. Mechanistic studies revealed that (1) Boc(2)O acts as the activator for the in situ transformation of the carboxylic acids into anhydrides before oxidative addition by the Rh catalyst, (2) a decarbonylation step is involved in the catalytic cycle, and (3) the C-H bond cleavage is likely the turnover-limiting step.

About (E)-2-Methylbut-2-enoic acid, If you have any questions, you can contact Zhao, HQ; Xu, X; Luo, ZL; Cao, L; Li, BH; Li, HR; Xu, LJ; Fan, QH; Walsh, PJ or concate me.. Recommanded Product: 80-59-1

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

An article Catalytic depolymerization of alkaline lignin to value-added phenolic-based compounds over Ni/CeO2-ZrO2 catalyst synthesized with a one-step chemical reduction of Ni species using NaBH4 as the reducing agent WOS:000501613900018 published article about NOBLE-METAL CATALYSTS; KRAFT LIGNIN; DIFFERENT LIGNOCELLULOSICS; CEO2-ZRO2 CATALYSTS; DIRECT LIQUEFACTION; ORGANOSOLV LIGNIN; LIQUEFIED FUEL; HYDROGENOLYSIS; PYROLYSIS; CONVERSION in [Totong, Sansanee; Daorattanachai, Pornlada; Laosiripojana, Navadol] King Mongkuts Univ Technol Thonburi, JGSEE, Prachauthit Rd, Bangkok 10140, Thailand; [Totong, Sansanee; Idem, Raphael] Univ Regina, CETRI, Fac Engn & Appl Sci, Regina, SK S4S 0A2, Canada in 2020, Cited 63. Safety of Benzyl Alcohol. The Name is Benzyl Alcohol. Through research, I have a further understanding and discovery of 100-51-6

Alkaline lignin obtained from paper manufacturing is a potential feedstock for upgrading to produce value-added chemicals. This study demonstrates the efficiencies of synthesized Ni supported CeO2-ZrO2 catalysts to convert this low-cost alkaline lignin into value-added phenolic-based chemicals for further commercial applications. Lignin depolymerization was performed under mild reaction conditions, namely, reaction temperature of 200-300 degrees C, and reaction time of 1-5 h. Three different catalyst preparation methods (simple wet-impregnation, wet-impregnation assisted reduction in H-2 atmosphere and one-step chemical reduction) were investigated and used to evaluate possible correlations between the active Ni phase and catalytic performance in lignin depolymerization. The active Ni phase was successfully formed by one-step chemical reduction method which showed a significant improvement on product yield, especially lignin oil. The best result obtained in lignin depolymerization was by using 10%Ni/CeO2-ZrO2-red catalyst which resulted in producing a high yield of lignin oil (46.8%) from lignin feedstock under mild condition of 250 degrees C. The major phenolic compounds in lignin oil were: guaiacol, methyl-guaiacol, ethyl-guaiacol, vanillin, acetovanillone, and homovanillic acid. Furthermore, the reaction temperature affected the product yield and product distribution resulting in higher diversity of phenolic compounds in lignin oil.

About Benzyl Alcohol, If you have any questions, you can contact Totong, S; Daorattanachai, P; Laosiripojana, N; Idem, R or concate me.. Safety of Benzyl Alcohol

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Category: indole-building-block. In 2019.0 GREEN CHEM published article about OXYGEN REDUCTION REACTION; GRAPHENE OXIDE; FREE ELECTROCATALYSTS; ELECTRODE MATERIALS; POROUS CARBON; ION BATTERIES; NITROGEN; ALDEHYDES; KETONES; GREEN in [Hu, Xiwei; Fan, Mengying; Zhu, Yangyang; Zhu, Qian; Song, Qiang; Dong, Zhengping] Lanzhou Univ, Coll Chem & Chem Engn, Gansu Prov Engn Lab Chem Catalysis, Lab Special Funct Mat & Struct Design,Minist Educ, Lanzhou 730000, Gansu, Peoples R China in 2019.0, Cited 47.0. The Name is Benzyl Alcohol. Through research, I have a further understanding and discovery of 100-51-6.

Heteroatom-doped carbon materials (HDCMs) with abundant active functional groups and stable structural characteristics are promising catalysts for eco-friendly metal-free catalysis. In this work, phosphorus-doped carbon materials with a highly porous structure and extremely high surface area (>1600 m(2) g(-1)) were successfully prepared via a convenient and scalable strategy using easily available soluble starch and phosphoric acid, which are expected to show good performance in mass-transfer and thus promote the catalytic process. As expected, the as-prepared PC-700 catalyst showed remarkable catalytic performance in aerobic oxidation of benzyl alcohol with a higher TOF value than other previously reported heteroatom-doped carbon catalysts. It also exhibited great tolerance for various substrates, including aromatic, alicyclic, heterocyclic, and aliphatic alcohols. On the basis of the related characterization studies and experimental results, it was proved that the P-O-C species and the defects caused by P-O species doping in the PC-700 catalyst are the active sites for aerobic oxidation. A unique mechanism was proposed for the catalytic process, which is different from that of N-doped graphene and graphene oxide catalyzed reactions that follow a free radical mechanism. In addition, the recycling test and characterization of the reused catalyst indicate that the PC-700 shows extraordinary performance in terms of both recyclability and stability and retains high reactivity even after eight cycles.

Category: indole-building-block. About Benzyl Alcohol, If you have any questions, you can contact Hu, XW; Fan, MY; Zhu, YY; Zhu, Q; Song, Q; Dong, ZP or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

SDS of cas: 150-76-5. I found the field of Biochemistry & Molecular Biology; Chemistry; Pharmacology & Pharmacy very interesting. Saw the article Flexible multidentate benzyldiamine derivatives with high affinity for beta-amyloid in cerebral amyloid angiopathy published in 2021.0, Reprint Addresses Peng, ZP; Jia, JH (corresponding author), Chongqing Med Univ, Coll Basic Med, Dept Radiol Med & Oncol, Chongqing 400016, Peoples R China.; Xue, WW (corresponding author), Chongqing Univ, Sch Pharmaceut Sci, Chongqing 401331, Peoples R China.. The CAS is 150-76-5. Through research, I have a further understanding and discovery of Mequinol.

Cerebral amyloid angiopathy (CAA) commonly found in the aged is pathologically characterized by beta-amyloid (A beta) deposition in the walls of arteries and capillaries of brain. In this study, four flexible multidentate benzyldiamine derivatives as potential probes for cerebrovascular A beta deposition were designed and synthesized. In in vitro inhibition assays, the ligands 18-21 displayed high affinities for A beta aggregates with K-i values of 1.45 +/- 0.53 nM, 1.68 +/- 0.35 nM, 1.16 +/- 0.23 nM and 1.72 +/- 0.19 nM, respectively. A significant improvement in the binding affinity over the monomer, compounds 9-12 or benzyldiamine derivatives, demonstrated the applicability of the multidentate approach. The underlying mechanism of these novel A beta agents was explored by molecular docking technique, which theoretically verified the high affinities of the multidentate benzyldiamine derivatives for A beta aggregates. Moreover, the molecular masses of the ligands 18-21 are more than 700 Dalton, which are believed to be hardly capable of penetrating blood brain barrier. In this regard, these ligands could be used to distinguish CAA from Alzheimer’s disease which is another A beta-related disorder disease. To convert these ligands to positron emission tomography imaging agents, we attempted to radiosynthesize [F-18]18. Though the radiolabeling was not very successful, the preliminary results suggested that these newly proposed multidentate benzyldiamine derivatives may be used as potential A beta imaging agents in cerebral amyloid angiopathy. [GRAPHICS] .

SDS of cas: 150-76-5. About Mequinol, If you have any questions, you can contact He, YJ; Fu, TT; Li, YY; Xue, WW; Cui, MC; Wang, L; Niu, MD; Peng, ZP; Jia, JH or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Recommanded Product: 4-Methoxybenzaldehyde. In 2021.0 CHEM SCI published article about DIELS-ALDER REACTION; REACTION DISCOVERY; SILOXY ALKYNES; ANNULATION; CONSTRUCTION; 1,2-DIAZINES; BENZANNULATION; DERIVATIVES; LACTONES; ACCESS in [Feng, Qiang; Wu, An; Sun, Jianwei] Hong Kong Univ Sci & Technol, Shenzhen Res Inst, Dept Chem, Kowloon, Clear Water Bay, Hong Kong, Peoples R China; [Zhang, Xinhao] Peking Univ Shenzhen Grad Sch, Shenzhen Bay Lab, State Key Lab Chem Oncogenom, Shenzhen, Peoples R China; [Song, Lijuan] Harbin Inst Technol Shenzhen, Sch Sci, Shenzhen 518055, Peoples R China; [Sun, Jianwei] Hong Kong Branch Chinese Natl Engn Res Ctr Tissue, Kowloon, Clear Water Bay, Hong Kong, Peoples R China in 2021.0, Cited 46.0. The Name is 4-Methoxybenzaldehyde. Through research, I have a further understanding and discovery of 123-11-5.

Aurone-derived azadienes are well-known four-atom synthons for direct [4 + n] cycloadditions owing to their s-cis conformation as well as the thermodynamically favored aromatization nature of these processes. However, distinct from this common reactivity, herein we report an unusual formal migrative annulation with siloxy alkynes initiated by [2 + 2] cycloaddition. Unexpectedly, this process generates benzofuran-fused nitrogen heterocyclic products with formal substituent migration. This observation is rationalized by less common [2 + 2] cycloaddition followed by 4 pi and 6 pi electrocyclic events. DFT calculations provided support to the proposed mechanism.

Recommanded Product: 4-Methoxybenzaldehyde. About 4-Methoxybenzaldehyde, If you have any questions, you can contact Feng, Q; Wu, A; Zhang, XH; Song, LJ; Sun, JW or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

An article Beckmann rearrangement of ketoximes promoted by cyanuric chloride and dimethyl sulfoxide under a mild condition WOS:000606524500006 published article about RECENT PROGRESS; OXIMES; 2,4,6-TRICHLORO-1,3,5-TRIAZINE; 3,5-DIARYL-1,2,4-THIADIAZOLES; AMIDATION; REAGENT; ACID in [Ma, Ruonan; Liu, Xiaoming] Nanchang Univ, Dept Chem, Nanchang 330031, Jiangxi, Peoples R China; [Ma, Ruonan; Xiao, Zhiyin; Natarajan, Mookan; Lu, Chunxin; Jiang, Xiujuan; Zhong, Wei; Liu, Xiaoming] Jiaxing Univ, Coll Biol Chem Sci & Engn, Jiaxing 314001, Peoples R China; [Chen, Xueyuan] Jiaxing CAS Test Tech Serv Co Ltd, Analyzing & Testing Ctr, Zhejiang Inst Adv Technol, Jiaxing 314001, Peoples R China in 2021.0, Cited 34.0. Name: 4′-Hydroxyacetophenone. The Name is 4′-Hydroxyacetophenone. Through research, I have a further understanding and discovery of 99-93-4

Synthesis of amides via Beckmann rearrangement of ketoximes promoted by cyanuric chloride (TCT)/DMSO under mild conditions has been reported. Conditions of the Beckmann rearrangement, e.g., solvents, the ratios of TCT/DMSO, and the temperature, were investigated using diphenylmethanone oxime as a substrate. The optimized conditions were adopted to afford fourteen amides with yields ranging from 20% to 99%. A plausible mechanism involving an active dimethyl alkoxysulfonium intermediate was proposed according to the mass spectrometry analysis. To our best knowledge, this is the first case of study on Beckmann rearrangement of ketoximes promoted by TCT/DMSO under a mild condition to afford amides efficiently. (C) 2020 Elsevier Ltd. All rights reserved.

About 4′-Hydroxyacetophenone, If you have any questions, you can contact Ma, RN; Chen, XY; Xiao, ZY; Natarajan, M; Lu, CX; Jiang, XJ; Zhong, W; Liu, XM or concate me.. Name: 4′-Hydroxyacetophenone

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Recently I am researching about ONE-POT SYNTHESIS; 1,2,4,5-TETRASUBSTITUTED IMIDAZOLES; 2,4,5-TRISUBSTITUTED IMIDAZOLES; EFFICIENT CATALYST; HETEROGENEOUS CATALYST; REUSABLE CATALYST; SOLVENT; SHELL; NANOCATALYSTS; CONDENSATION, Saw an article supported by the Semnan University Research Council. Published in SPRINGER in NEW YORK ,Authors: Arghan, M; Koukabi, N; Kolvari, E. The CAS is 100-83-4. Through research, I have a further understanding and discovery of 3-Hydroxybenzaldehyde. Quality Control of 3-Hydroxybenzaldehyde

In this study, a PVAm-bearing SO3H groups/Fe3O4 nanocomposite was prepared via a simple and in situ polymerization of acrylamide onto the surface of magnetic nanoparticles without using organosilane precursors. In order to obtain amine-functionalized magnetic, Hofmann degradation was carried out. In the following, sulfonated-polyvinyl amine coated on Fe3O4 nanoparticles was prepared by covalent grafting of chlorosulfonic acid on amine groups. The introduction of polymer to the surface of magnetic nanoparticles increases the loading content with functional groups extremely. The resulting hybrid material was effectively employed as an unprecedented acid magnetic catalyst for the one-pot synthesis of 2,4,5-trisubstituted and 1,2,4,5-tetrasubstituted imidazoles under solvent-free conditions. High yields, mild reaction conditions, short reaction times, operational simplicity with reusability are the notable features of the catalyst. The structure of the newly developed catalyst was characterized using TGA, FT-IR, SEM, TEM, VSM, EDX, CHNS, and XRD analysis. Magnetic separation and recycling of the catalyst for at least 8 runs is possible without any significant deterioration in catalytic activity. This work is the first report of employing PVAm as a linker for immobilizing liquid acid on a support.

Quality Control of 3-Hydroxybenzaldehyde. About 3-Hydroxybenzaldehyde, If you have any questions, you can contact Arghan, M; Koukabi, N; Kolvari, E or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Authors Bahluli, R; Keshipour, S in PERGAMON-ELSEVIER SCIENCE LTD published article about ETHYLENEDIAMINE-FUNCTIONALIZED CELLULOSE; EFFICIENT CATALYST; SELECTIVE OXIDATION; AEROBIC OXIDATION; ALKYL ARENES; PHTHALOCYANINE; CO(II); AEROGEL; ACID; H2O2 in [Bahluli, Rana; Keshipour, Sajjad] Urmia Univ, Dept Nanochem, Nanotechnol Res Ctr, Orumiyeh, Iran in 2019.0, Cited 40.0. Safety of Benzyl Alcohol. The Name is Benzyl Alcohol. Through research, I have a further understanding and discovery of 100-51-6

Phthalocyanines of Fe(II) and Ni(II) were immobilized on microcrystalline cellulose (MCC) via chemical binding. MCC was obtained from cotton as a cheap and abundant source of cellulose. The new composites were characterized by FT-IR, Flame Absorption Atomic Spectroscopy, Brunauer-Emmett-Teller analysis, Energy Dispersive X-ray Spectroscopy, Scanning Electron Microscope, and Transmission Electron Microscope. The nanocomposites showed high surface areas due to use of MCC as the support in the syntheses procedures. The catalytic activities of composites were examined in the oxidations of alcohols, and ethylbenzene. The oxidation of alcohols to the corresponding aldehydes or ketones and ethylbenzene to acetophenone were carried out with high yields and excellent selectivities. The catalysts are recyclable for 6 times without any decrease in the oxidation reaction yield. (C) 2019 Elsevier Ltd. All rights reserved.

About Benzyl Alcohol, If you have any questions, you can contact Bahluli, R; Keshipour, S or concate me.. Safety of Benzyl Alcohol

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Recently I am researching about QUANTUM DOTS; PHOTOREDOX CATALYSIS; GRAPHENE OXIDE; NANODOTS, Saw an article supported by the IIT Indore; MHRD, New Delhi. Published in ROYAL SOC CHEMISTRY in CAMBRIDGE ,Authors: Sarma, D; Majumdar, B; Sarma, TK. The CAS is 150-19-6. Through research, I have a further understanding and discovery of m-Methoxyphenol. Quality Control of m-Methoxyphenol

The development of carbonaceous materials as metal-free catalysts integrating different types of catalysis in a single system represents a significant advance in cascade/tandem organic synthesis. Zero-dimensional carbon dots with tuneable optical properties and easily modifiable surface functionalities can be harnessed as a carbocatalyst for merging photooxidation and acid-catalyzed reactions in one pot. Herein, we explore carbon dots decorated with hydrogen sulfate groups as a photocatalyst for the dehydrogenative cross-coupling of xanthenes with ketones, arenes and 1,3-dicarbonyl compounds that showed high efficiency and selectivity under visible-light irradiation. The sulphated carbon dots demonstrate dual catalytic properties, wherein they induced the rapid photooxidation of xanthenes in the presence of molecular oxygen to form a hydroperoxy intermediate followed by coupling of nucleophiles catalysed by the acidic surface functional groups. The methodology represents an operationally simple pathway for the generation of C-C coupling products in a short reaction time with wide substrate scopes under mild conditions. The catalyst is easily separable and can be reused over multiple cycles with good efficiency.

Quality Control of m-Methoxyphenol. About m-Methoxyphenol, If you have any questions, you can contact Sarma, D; Majumdar, B; Sarma, TK or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles