Tag: 100-200

Vastyl, Michal; Jankovska, Zuzana; Cruz, Gerardo Juan Francisco; Matejova, Lenka published an article on February 28 ,2022. The article was titled 《A case study on microwave pyrolysis of waste tyres and cocoa pod husk; effect on quantity and quality of utilizable products》, and you may find the article in Journal of Environmental Chemical Engineering.Quality Control of Triacetonamine The information in the text is summarized as follows:

Disposal of huge amounts of diverse wastes for reduced costs accompanied with gaining of energy and valuable chems. is an eager topic in waste-to-energy and fuel business. Microwave pyrolysis is a thermochem. route providing such benefits. Waste scrap tyres (ST) and cocoa pod husk (CPH) as polymer and biomass representatives were pyrolyzed in microwave reactor at 440 W power for 30 min. Quantity and quality of pyrolysis products (gas, oil, and carbon black) were investigated. It was revealed, while set microwave pyrolysis conditions are sufficient for maximum decomposition of ST to pyrolysis products, it is necessary to optimize them for CPH. The gas produced by microwave pyrolysis of ST contains more H2 and CH4 than from conventional pyrolysis, thus, microwave pyrolysis is an effective tool for production of a fuel gas. The oil obtained by ST microwave pyrolysis is a complex mixture of mostly nonpolar aromatic compounds (toluene, benzene, limonene, styrene, o-xylene), while the oil obtained by CPH microwave pyrolysis contains mainly p-cresol, phenol and its derivatives The ST-derived carbon black shows a well-established large-volume mesoporous-macroporous structure. The CPH-derived carbon black is a low-volume macroporous material with very well-developed microporosity. A higher gross calorific value of microwave ST-derived carbon black in comparison to conventionally prepared one is caused by its higher graphitization rate. Since the surface of ST-derived carbon black is more polar than CPH-derived one and with respect to chem. purity, it could be more suitable adsorbent for polar volatile organic compounds from gaseous emissions. It is necessary to develop a microporosity in ST-derived carbon black. In addition to this study using Triacetonamine, there are many other studies that have used Triacetonamine(cas: 826-36-8Quality Control of Triacetonamine) was used in this study.

Triacetonamine(cas: 826-36-8) is a member of piperidine. Piperidine-containing compounds are also frequently employed in synthesis as ligands or auxiliaries. Accordingly, many efforts have been devoted to the development of novel methods for the synthesis of these compounds over the years.Quality Control of Triacetonamine

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Category: piperidinesOn September 30, 2018 ,《Diastereoselective synthesis of 2-vinylpyrrolidines and 2-vinylpiperidines by the palladium-catalysed cyclization of amino-allylic carbonates containing a chiral protecting group》 was published in ARKIVOC (Gainesville, FL, United States). The article was written by Olszewska, Beata; Jablonska, Aleksandra; Zawisza, Anna. The article contains the following contents:

An efficient diastereoselective synthesis of pyrrolidine- and piperidine-type N-heterocycles was reported, by the intramol. Pd(0)-catalyzed cyclization of amino carbonates containing chiral protecting group. The use of chiral auxiliary in the cyclization gave the corresponding heterocyclic derivatives in excellent yields and with good dr values. In the experiment, the researchers used many compounds, for example, (S)-2-Ethylpiperidine hydrochloride(cas: 558479-16-6Category: piperidines)

(S)-2-Ethylpiperidine hydrochloride(cas: 558479-16-6) is a member of piperidine. Piperidine is ubiquitous structural motif widely occurred in diverse synthetically and naturally occurring bioactive molecules. Piperidines are an immensely important class of compounds medicinally: the piperidine ring is the most common heterocyclic subunit among FDA approved drugs.Category: piperidines

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

In 2016,Babu, J. Sree Ram; Sankar, T. Ravi; Babu, K. Sudhakar; Latha, J. published 《Synthesis, characterization and biological evaluation of some novel disubstituted heterocyclic derivatives》.Journal of Chemical and Pharmaceutical Research published the findings.Recommanded Product: 2-(Piperidin-4-yl)ethanol The information in the text is summarized as follows:

Synthesis of some novel di-substituted 1-piperidin-4-yl(3,4-dibromphenyl)-1,3-dihydro-2H-benzimidazol-2-one derivatives (6A-6D) were prepared from com. available 1,2-henylenediamine. Compounds (6A-6D) were tested for Gram pos.: Streptococcus pyogenes and Staphylococcus aureus. Gram neg.: Escherichia coli, Pseudomonas arzenous, Proteus vulgaris, Salmonella typhi bacterial cultures. Compounds 6A-6D were found to be highly active against Streptococcus pyogenes and Escherichia coli. In the experiment, the researchers used many compounds, for example, 2-(Piperidin-4-yl)ethanol(cas: 622-26-4Recommanded Product: 2-(Piperidin-4-yl)ethanol)

2-(Piperidin-4-yl)ethanol(cas: 622-26-4) can be used to synthese ursolic acid derivatives, spiroimidazolidinone NPC1L1 inhibitors, neurokinin-2 receptor antagonists, antagonists for inhibition of platelet aggregation.Recommanded Product: 2-(Piperidin-4-yl)ethanol

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

In 2014,Sree Ram Babu, J.; Ravi Sankar, T.; Sudhakar Babu, K.; Latha, J. published 《Synthesis, characterization and biological evaluation of some novel disubstituted heterocyclic derivatives》.Journal of Chemical and Pharmaceutical Research published the findings.Recommanded Product: 2-(Piperidin-4-yl)ethanol The information in the text is summarized as follows:

Synthesis of disubstituted heterocyclic derivatives I [X = 3,4-(Cl)2; R = piperidin-1-yl, 4-hydroxypiperidin-1-yl, piperidin-4-ylmethanol, 2-(piperidin-4-yl)ethan-1-ol] were prepared from com. available 1,2-henylenediamine. The compounds I were tested for Gram pos.: Streptococcus pyogenes and Staphylococcus aureus. Gram neg.: Escherichia coli, Pseudomonas arzenous, Proteus vulgaris, Salmonella typhi bacterial cultures. The compounds I were found to be highly active against Streptococcus pyogenes and Escherichia coli.2-(Piperidin-4-yl)ethanol(cas: 622-26-4Recommanded Product: 2-(Piperidin-4-yl)ethanol) was used in this study.

2-(Piperidin-4-yl)ethanol(cas: 622-26-4) can be used to synthese ursolic acid derivatives, spiroimidazolidinone NPC1L1 inhibitors, neurokinin-2 receptor antagonists, antagonists for inhibition of platelet aggregation.Recommanded Product: 2-(Piperidin-4-yl)ethanol

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

In 2013,Sudhakar Babu, K.; Ravi Sankar, T.; Latha, J.; Ram Babu, B.; SwarnaKumari, M. published 《Synthesis and antibacterial activity of some novel 1-piperidin-4-yl-1,3-dihydro-2H-benzimidazol-2-one analogs》.Journal of Applicable Chemistry (Lumami, India) published the findings.HPLC of Formula: 622-26-4 The information in the text is summarized as follows:

Synthesis of some novel 1-piperidin-4-yl-1,3-dihydro-2H-benzimidazol-2-one derivatives were prepared from com. available 1,2-phenylenediamine. These compounds were tested for their antibacterial activity against gram pos. Streptococcus pyogenes and Staphylococcus aureus and against gram neg. Escherichia coli, Pseudomonas arsenous, Proteus vulgaris, Salmonella typhii bacterial cultures. The title compounds were highly active against Streptococcus pyogenes and Escherichia coli. In addition to this study using 2-(Piperidin-4-yl)ethanol, there are many other studies that have used 2-(Piperidin-4-yl)ethanol(cas: 622-26-4HPLC of Formula: 622-26-4) was used in this study.

2-(Piperidin-4-yl)ethanol(cas: 622-26-4) have been used as an intermediate in the synthetic preparation of cellular-active allosteric inhibitors of FAKHPLC of Formula: 622-26-4

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Zuo, Shiyu; Guan, Zeyu; Zhang, Yiming; Yang, Fan; Li, Xiaohu; Li, Dongya published their research in Chemical Engineering Journal (Amsterdam, Netherlands) on December 15 ,2022. The article was titled 《Bidentate binuclear coordination configuration for peroxymonosulfate catalytic regulation through incorporation of CuFeOx to iron-based metal organic frameworks》.Synthetic Route of C9H17NO The article contains the following contents:

The scheme of coordination bridge modification provides a new vision for regulating the catalytic pathway, but how to change the surface coordination of peroxymonosulfate (PMS), thereby affecting the catalytic mechanism of PMS, is still an unknown field. In this, we found that MIL-101(Fe) is expected to control the surface catalytic pathway via the bidentate binuclear coordination configuration, thereby realizing the rapid oxidative detoxification of toxic organic pollutants and CO2 conversion. Introducing Cu on the surface of MIL-101(Fe) to change the surface chem. environment (MIL-101(Fe)/CuFeOx) can shift the catalytic pathway, thereby promoting a 14.5-fold improvement in Bisphenol A (BPA) oxidation kinetics (from 0.00697 min-1 to 0.101 min-1). Characterization, experiments, and d. functional theory (DFT) results show that Cu in the vicinity of Fe can tune the electronic structure and properties of Fe-O-Cu, thereby enhancing the electron transfer rate at the active center, facilitating electronic transitions and PMS adsorption. More importantly, shifting the binding configuration of PMS from monodentate mononuclear coordination on a single Fe center to bidentate binuclear coordination on Fe/Cu centers, shorter distance coordination structures and O-O pulling of PMS. The effect promoted PMS cleavage to generate more ROS and changed the catalytic pathway from the radical pathway to the 1O2 and high-valent metal species pathway. The free radical/non-radical pathway co-mediated by 1O2, high-valent metal species, ·OH and SO·-4 can effectively reduce the biotoxicity of toxic organic pollutants, and can utilize alkali environment captures CO2 as a stable carbonate for environmental use. This study provides a strategy for manipulating the catalytic pathway through coordination configuration and a feasible idea for CO2 conversion in wastewater treatment. The experimental part of the paper was very detailed, including the reaction process of Triacetonamine(cas: 826-36-8Synthetic Route of C9H17NO)

Triacetonamine(cas: 826-36-8) is a member of piperidine. Piperidine-containing compounds are also frequently employed in synthesis as ligands or auxiliaries. Accordingly, many efforts have been devoted to the development of novel methods for the synthesis of these compounds over the years.Synthetic Route of C9H17NO

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

The author of 《Light-Mediated Formal Radical Deoxyfluorination of Tertiary Alcohols through Selective Single-Electron Oxidation with TEDA2+.》 were Aguilar Troyano, Francisco Jose; Ballaschk, Frederic; Jaschinski, Marcel; Oezkaya, Yasemin; Gomez-Suarez, Adrian. And the article was published in Chemistry – A European Journal in 2019. Quality Control of 4-(Pyridin-3-yl)piperidin-4-ol The author mentioned the following in the article:

The synthesis of tertiary alkyl fluorides through a formal radical deoxyfluorination process was described. This light-mediated, catalyst-free methodol. was fast and broadly applicable allowing for the preparation of C-F bonds from (hetero)benzylic, propargylic and non-activated tertiary alc. derivatives Preliminary mechanistic studies supported that the key step of the reaction is the single-electron oxidation of cesium oxalates-which are readily available from the corresponding tertiary alcs.-with in situ generated TEDA2+ (TEDA: N-(chloromethyl)triethylenediamine), a radical cation derived from Selectfluor. The experimental process involved the reaction of 4-(Pyridin-3-yl)piperidin-4-ol(cas: 50461-59-1Quality Control of 4-(Pyridin-3-yl)piperidin-4-ol)

4-(Pyridin-3-yl)piperidin-4-ol(cas: 50461-59-1) belongs to piperidines. Piperidine derivatives are also used in solid-phase peptide synthesis (SPPS) and many degradation reactions. Quality Control of 4-(Pyridin-3-yl)piperidin-4-ol

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Ma, Wenjie; Wang, Na; Du, Yunchen; Tong, Tianze; Zhang, Leijiang; Andrew Lin, Kun-Yi; Han, Xijiang published an article on January 15 ,2019. The article was titled 《One-step synthesis of novel Fe3C@nitrogen-doped carbon nanotubes/graphene nanosheets for catalytic degradation of Bisphenol A in the presence of peroxymonosulfate》, and you may find the article in Chemical Engineering Journal (Amsterdam, Netherlands).Safety of Triacetonamine The information in the text is summarized as follows:

Developing novel carbocatalysts with available strategies for peroxymonosulfate (PMS) activation has become a popular topic in environmental remediation and protection fields. Herein, using com. K4Fe(CN)6 as the precursor, Fe3C@nitrogen-doped carbon nanotubes/graphene nanosheets (Fe3C@NCNTs/GNS) is synthesized by a direct high-temperature pyrolysis. Characterization results prove that Fe3C@NCNTs/GNS has a relatively high graphitization degree and rich nitrogen doping content, which endow it with excellent catalytic efficiency in PMS activation for powerful removal of Bisphenol A (BPA). Influences of catalyst/oxidant dosages, some inorganic anions, humic acid, and practical sewages are investigated in detail. For mechanism studies, it is found that tert-Bu alc. (TBA)/methanol fails to inhibit BPA degradation, and the primary reactive oxidative species (ROS) are superoxide radical (O·-2) and singlet oxygen (1O2). Discussion on the origin of 1O2 confirms that moderate modification of N atoms in graphitic carbon frameworks plays an essential role in inducing the non-radical mechanism. This work will provide new insights for the preparation of high-performance carbocatalysts in PMS activation and exploring critical roles of N-doping during non-radical processes. After reading the article, we found that the author used Triacetonamine(cas: 826-36-8Safety of Triacetonamine)

Triacetonamine(cas: 826-36-8) is a member of piperidine. Piperidine is ubiquitous structural motif widely occurred in diverse synthetically and naturally occurring bioactive molecules. Piperidines are an immensely important class of compounds medicinally: the piperidine ring is the most common heterocyclic subunit among FDA approved drugs.Safety of Triacetonamine

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Synthetic Route of C9H17NOOn October 1, 2021 ,《Highly-efficient and stable MgCo2O4 spinel for bisphenol a removal by activating peroxymonosulfate via radical and non-radical pathways》 was published in Chemical Engineering Journal (Amsterdam, Netherlands). The article was written by Yu, Jiaxin; Qiu, Wei; Xu, Haodan; Lu, Xiaohui; Ma, Jun; Lu, Dongwei. The article contains the following contents:

Nowadays, the limited catalytic efficiency, secondary pollution of metal leaching and stability decrease during reuse bring challenges to practical application of heterogeneous catalysts in sulfate radical-based advanced oxidation processes. Herein, MgCo2O4 spinel was synthesized through hydrothermal method and tested for its catalytic performance of activating PMS by using bisphenol A (BPA) as the target pollutant. MgCo2O4/PMS system can degrade 99.6% BPA efficiently at pH 7.2 within 10 min. The morphol. and physicochem. properties of MgCo2O4 were characterized by SEM (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). Unlike conventional PMS activation, radical and non-radical pathways were identified through utilizing XPS, ESR (EPR), and radical quenching experiments Tetrahedral Mg2+ might make MgCo2O4 more stable and promote the Co2+/Co3+ redox, which dominated the catalytic ability of MgCo2O4. MgCo2O4 spinel is efficient, stable, low-cost, and simple to synthesize, leading to BPA degradation via both radical and non-radical pathways. This research would extend the mechanism and potential application of spinel catalysis in water treatment. After reading the article, we found that the author used Triacetonamine(cas: 826-36-8Synthetic Route of C9H17NO)

Triacetonamine(cas: 826-36-8) is a member of piperidine. Piperidine is ubiquitous structural motif widely occurred in diverse synthetically and naturally occurring bioactive molecules. Piperidines are an immensely important class of compounds medicinally: the piperidine ring is the most common heterocyclic subunit among FDA approved drugs.Synthetic Route of C9H17NO

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Electric Literature of C6H12N2OOn September 21, 2020 ,《A General Catalyst Based on Cobalt Core-Shell Nanoparticles for the Hydrogenation of N-Heteroarenes Including Pyridines》 was published in Angewandte Chemie, International Edition. The article was written by Murugesan, Kathiravan; Chandrashekhar, Vishwas G.; Kreyenschulte, Carsten; Beller, Matthias; Jagadeesh, Rajenahally V.. The article contains the following contents:

Herein, we report the synthesis of specific silica-supported Co/Co3O4 core-shell based nanoparticles prepared by template synthesis of cobalt-pyromellitic acid on silica and subsequent pyrolysis. The optimal catalyst material allows for general and selective hydrogenation of pyridines, quinolines, and other heteroarenes including acridine, phenanthroline, naphthyridine, quinoxaline, imidazo[1,2-a]pyridine, and indole under comparably mild reaction conditions. In addition, recycling of these Co nanoparticles and their ability for dehydrogenation catalysis are showcased. In the experiment, the researchers used many compounds, for example, Piperidine-4-carboxamide(cas: 39546-32-2Electric Literature of C6H12N2O)

Piperidine-4-carboxamide(cas: 39546-32-2) belongs to anime. Nitrous acid converts secondary amines (aliphatic or aromatic) to N-nitroso compounds (nitrosamines): R2NH + HNO2 → R2N―NO. Some nitrosamines are potent cancer-inducing substances, and their possible formation is a serious consideration when nitrites, which are salts of nitrous acid, are present in foods or pharmaceutical preparations. Tertiary amines give rise to nitrosamines more slowly; an alkyl group is eliminated as an aldehyde or ketone, along with nitrous oxide, N2O.Electric Literature of C6H12N2O

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem