Tag: M.W=150-200

Wu, Xuan published the artcileActivation of peroxymonosulfate by magnetic CuFe₂O₄@ZIF-67 composite catalyst for the study on the degradation of methylene blue, Name: 2,2,6,6-Tetramethylpiperidin-4-one, the publication is Colloids and Surfaces, A: Physicochemical and Engineering Aspects (2022), 128278, database is CAplus.

In this research, a novel magnetically recoverable composite catalyst, CuFe₂O₄ @ZIF-67, was synthesized. CuFe₂O₄@ZIF-67 composite catalyst was applied to degrade methylene blue (MB) in water by activating peroxymonosulfate (PMS). The results showed that the degradation rate of MB (20 mg/L) reached 98.9% in 30 min in the 0.2-CuFe₂O₄@ZIF-67 (75 mg/L) + PMS (125 mg/L) system. Both ESR (EPR) studies and radical quenching experiments revealed that SO^–₄•, •OH, ¹O₂ and •O^–₂ were involved in the degradation of MB. We proposed a catalytic mechanism of PMS activation by CuFe₂O₄@ZIF-67. With the synergistic effect of Co³⁺/Co²⁺, Fe³⁺/Fe²⁺ and Cu²⁺/Cu⁺ redox cycles, it can keep its outstanding catalytic activity. Recycling tests showed that the removal rate of MB can still be maintained above 85%, indicating that CuFe₂O₄@ZIF-67 has good reusability. In general, owing to its reusability and excellent catalytic activity, the CuFe₂O₄@ZIF-67 composite catalyst has a good application prospect in water pollution control.

Colloids and Surfaces, A: Physicochemical and Engineering Aspects published new progress about 826-36-8. 826-36-8 belongs to piperidines, auxiliary class Natural product, name is 2,2,6,6-Tetramethylpiperidin-4-one, and the molecular formula is C4H6BrFO2, Name: 2,2,6,6-Tetramethylpiperidin-4-one.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Dai, Liang published the artcileGut Microbiota and Related Metabolites Were Disturbed in Ulcerative Colitis and Partly Restored After Mesalamine Treatment, Category: piperidines, the publication is Frontiers in Pharmacology (2020), 620724, database is CAplus and MEDLINE.

Mesalamine has been well used in the improvement of ulcerative colitis (UC) in clinics, however, the underlying mechanisms were not well illustrated. To explore its efficacy from the perspective of gut microbiota and related metabolites, we employed 16S rRNA sequencing and metabolomics approaches in stool samples across 14 normal healthy controls (NC group), 10 treatment-naïve UC patients (UC group) and 14 UC patients responded to mesalamine treatment (mesalamine group). We noted that the gut microbiota diversity and community composition were remarkably perturbed in UC group and partially restored by mesalamine treatment. The relative abundance of 192 taxa in genus level were significantly changed in UC group, and 168 genera were significantly altered after mesalamine intervention. Meanwhile, a total of 127 metabolites were significantly changed in UC group and 129 metabolites were significantly altered after mesalamine treatment. Importantly, we observed that many candidates including 49 genera (such as Escherichia-shigella, Enterococcus and Butyricicoccus) and 102 metatoblites (such as isoleucine, cholic acid and deoxycholic acid) were reversed by mesalamine. Spearman correlation anal. revealed that most of the candidates were significantly correlated with Mayo score of UC, and the relative abundance of specific genera were significant correlated with the perturbation of metabolites. Pathway anal. demonstrated that genera and metabolites candidates were enriched in many similar mol. pathways such as amino acid metabolism and secondary metabolites biosynthesis. Importantly, ROC curve anal. identified a gut microbiota signature composed of five genera including Escherichia-Shigella, Streptococcus, Megamonas, Prevotella_9 and [Eubacterium] _coprostanoligenes _group which might be used to distinguish UC group from both NC and mesalamine group. In all, our results suggested that mesalamine might exert a beneficial role in UC by modulating gut microbiota signature with correlated metabolites in different pathways, which may provide a basis for developing novel candidate biomarkers and therapeutic targets of UC.

Frontiers in Pharmacology published new progress about 826-36-8. 826-36-8 belongs to piperidines, auxiliary class Natural product, name is 2,2,6,6-Tetramethylpiperidin-4-one, and the molecular formula is C9H17NO, Category: piperidines.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Gao, Panpan published the artcilePromoted peroxymonosulfate activation into singlet oxygen over perovskite for ofloxacin degradation by controlling the oxygen defect concentration, Product Details of C9H17NO, the publication is Chemical Engineering Journal (Amsterdam, Netherlands) (2019), 828-839, database is CAplus.

Recently, perovskite is becoming a promising alternative as peroxymonosulfate (PMS) activator for the remediation of organic pollutants in water. But the factor determining PMS activation efficiency of perovskite and the evolution of reactive oxygen species (ROS) remain equivocal and elusive. In this study, we proposed an oxygen defect dependent PMS activation mechanism over perovskite with the singlet oxygen (¹O₂) as the dominant ROS. Among the tested four perovskites, ofloxacin (OFX) degradation efficiency increased with the following order: LaFeO₃ < LaZnO₃ < LaMnO₃ < LaNiO₃, which agreed well with their oxygen defect amounts based on XPS and ESR (EPR) anal. The results clearly demonstrated a good relationship among oxygen defects in LaBO₃, OFX degradation efficiency and ¹O₂ concentration Moreover, ¹O₂ evolution mechanism over perovskite by decreasing the activation energy of PMS self-decomposition was proposed. The ¹O₂ mediated OFX degradation pathway was further studied by HPLC-MS technique and three-dimensional excitation-emission matrix fluorescence spectroscopy (3D EEMs). This work provides a new insight into PMS activation by perovskites and favors its application in actual water treatment.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about 826-36-8. 826-36-8 belongs to piperidines, auxiliary class Natural product, name is 2,2,6,6-Tetramethylpiperidin-4-one, and the molecular formula is C9H17NO, Product Details of C9H17NO.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Shah, Ayaz A. published the artcileBio-crude production through aqueous phase recycling of hydrothermal liquefaction of sewage sludge, Recommanded Product: 2,2,6,6-Tetramethylpiperidin-4-one, the publication is Energies (Basel, Switzerland) (2020), 13(2), 493, database is CAplus.

Hydrothermal liquefaction (HTL) is a promising technol. for the production of bio-crude. However, some unresolved issues still exist within HTL, which need to be resolved before its promotion on a com. scale. The management of the aqueous phase is one of the leading challenges related to HTL. In this study, the sewage sludge has been liquefied at 350°C with and without catalyst (K2CO3). Subsequently, aqueous phase recycling was applied to investigate the effect of recycling on bio-crude properties. Obtained results showed that the energy recovery in the form of bio-crude increased by 50% via aqueous phase recirculation, whereas nitrogen content in the bio-crude was approx. doubled after eight rounds of recycling. GCMS characterization of the aqueous phase indicated acetic acid as a major water-soluble compound, which employed as a catalyst (0.56 M), and resulted in a negligible increase in bio-crude yield. ICP-AES highlighted that the majority of the inorganics were transferred to the solid phase, while the higher accumulation of potassium and sodium was found in the aqueous phase via successive rounds of recycling.

Energies (Basel, Switzerland) published new progress about 826-36-8. 826-36-8 belongs to piperidines, auxiliary class Natural product, name is 2,2,6,6-Tetramethylpiperidin-4-one, and the molecular formula is C15H21BO2, Recommanded Product: 2,2,6,6-Tetramethylpiperidin-4-one.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Vystorop, I. V. published the artcileRegioselective Synthesis, Structure, and Chemosensitizing Antitumor Activity of Cyclic Hydroxamic Acid Based on DL-Valine, Product Details of C9H17NO, the publication is Russian Journal of Bioorganic Chemistry (2021), 47(3), 757-764, database is CAplus.

The reaction of DL-valine hydroxamic acid with triacetonamine proceeds as the N,N’-regioselective condensation to form (±)-1-hydroxy-3-isopropyl-7,7,9,9-tetramethyl-1,4,8-triazaspiro[4,5]decan-2-one. A study of the antimetastatic and antitumor activities of the resulting hydroxamic acid in vivo by the combined therapy with a cytostatic of the alkylation type on a model of exptl. transplanted mouse melanoma B16 showed that the compound is capable of increasing the sensitivity of the tumor to the known antitumor drug cyclophosphamide applied at a subtherapeutic dose. The chemosensitizing activity of hydroxamic acid combined with cyclophosphamide led to an almost twofold increase in the antitumor effect of the cytostatic and a marked decrease in the number of metastases, which showed up as an increase in the metastasis inhibition index (MII) to 74%.

Russian Journal of Bioorganic Chemistry published new progress about 826-36-8. 826-36-8 belongs to piperidines, auxiliary class Natural product, name is 2,2,6,6-Tetramethylpiperidin-4-one, and the molecular formula is C10H15ClO3S, Product Details of C9H17NO.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Yousif, M. N. M. published the artcileSynthesis and Biological Activity of Triacetonamine, Name: 2,2,6,6-Tetramethylpiperidin-4-one, the publication is Russian Journal of General Chemistry (2020), 90(3), 460-469, database is CAplus.

A review. Various methods of synthesis of 2,2,6,6-tetramethylpiperidin-4-one (triacetonamine) derivatives start generally with acetone, phorone, piperidine N-oxides, piperidine alcs., and 4-dimethylamine piperidine derivatives Phys. properties of triacetonamine including d., b.p., flash point, and m.p. were determined Reactions of triacetonamine derivatives with various organic reagents were also summarized. Triacetonamine derivatives react via three functional groups including carbonyl, methylenes adjacent to the carbonyl group, and NH. Some other miscellaneous reactions and conformation of triacetonamine were described. Theor. models for the conformations of triacetonamine were developed by quantum and mol. mechanics methods. Triacetonamine demonstrated different types of biol. activities, such as antialzheimer, antifungal, antimicrobial, anti-HIV, anticancer, antioxidant, P38 kinase inhibitor, DNA labeling, antispasmodic, and psychotropic, and high ganglionic blocking.

Russian Journal of General Chemistry published new progress about 826-36-8. 826-36-8 belongs to piperidines, auxiliary class Natural product, name is 2,2,6,6-Tetramethylpiperidin-4-one, and the molecular formula is C9H9BrO2, Name: 2,2,6,6-Tetramethylpiperidin-4-one.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Entooru, Keshamma published the artcileGC-MS analysis of bioactive components and evaluation of in-vitro pancreatic lipase inhibitory activity of aqueous extracts of Pleurotus eryngii, Application In Synthesis of 826-36-8, the publication is International Journal of Chemical Studies (2021), 9(2), 1141-1145, database is CAplus.

Present study was designed to conduct with main purpose to determine bioactive components and evaluation of aqueous extract of Pleurotus eryngii for in-vitro pancreatic lipase inhibitory activity. GC-MS anal. was carried out to determine the bioactive components and in-vitro pancreatic lipase inhibitory assay was carried out to determine IC50 values of aqueous extracts of Pleurotus eryngii. The results of the present study depicted that the aqueous extracts of Pleurotus eryngii possess in-vitro pancreatic lipase inhibitory activities at the concentration of 1-30μg/mL and this could be attributed to the prevailing compounds identified in the GC-MS anal. i.e., conhydrin, di-Et phthalate, phthalic acid-Bu hex-3-yl ester (alkaloids), ar-turmerone (sesquiterpenoid), palmitic acid, myristic acid, phenol and benzoic acid from ethanolic extract of Pleurotus eryngii. In conclusion, polyphenols, alkaloids terpenoids and Vitamin B class of secondary metabolites majorly identified in GC-MS anal. of aqueous extract of Pleurotus eryngii has been reported to possess the in-vitro pancreatic lipase inhibitory activities. Hence, further in-vivo studies in exptl. induced obese animal models could be recommended to access the safety and efficacy of aqueous extracts of Pleurotus eryngii to strongly recommend them as natural antiobesity agents in the formulations of natural antiobesity drugs.

International Journal of Chemical Studies published new progress about 826-36-8. 826-36-8 belongs to piperidines, auxiliary class Natural product, name is 2,2,6,6-Tetramethylpiperidin-4-one, and the molecular formula is C9H17NO, Application In Synthesis of 826-36-8.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

del Pozo, Cristina published the artcileConverting coffee silverskin to value-added products by a slow pyrolysis-based biorefinery process, Name: 2,2,6,6-Tetramethylpiperidin-4-one, the publication is Fuel Processing Technology (2021), 106708, database is CAplus.

This work aims to transform coffee silverskin (CSS), the only waste from the coffee roasting process, that worldwide amounts to about 76 million kg/yr, into value-added products within an integrated slow pyrolysis process. The study, performed at 280°C, 400°C and 500°C, determined the potential applications of the resulting fractions. Biochar has been studied as an adsorbent of organic pollutants in water, using methylene blue (MB) and methyl orange (MO), which are resp. cationic and anionic aromatic dyes, as model compounds, and with 400°C biochar giving the highest removal values, at 98% with MB and 40% with MO. Moreover, CSS biochar could be used to obtain renewable energy from its combustion, with 22.6-24.2 MJ/kg calorific values. The liquid fraction could be a potential source of caffeine, among phenolics, with 400°C aqueous phase presenting the highest concentration of caffeine (14.3 g/L). Concerning the gas fraction, it could be used to obtain heat for biomass drying before pyrolysis. Hence, use of the pyrolysis products as described would allow zero-waste to be achieved in the coffee roasting industry, thus promoting the green and circular economy and production of green chems. and materials in a biorefinery context.

Fuel Processing Technology published new progress about 826-36-8. 826-36-8 belongs to piperidines, auxiliary class Natural product, name is 2,2,6,6-Tetramethylpiperidin-4-one, and the molecular formula is C9H17NO, Name: 2,2,6,6-Tetramethylpiperidin-4-one.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Dong, Xiongbo published the artcileDiatomite supported hierarchical 2D CoNi₃O₄ nanoribbons as highly efficient peroxymonosulfate catalyst for atrazine degradation, SDS of cas: 826-36-8, the publication is Applied Catalysis, B: Environmental (2020), 118971, database is CAplus.

Reactive oxygen radicals generated by peroxymonosulfate (PMS) activation exhibit great potential to treat refractory pollutants of emerging concern; however, mass production of efficient, cost-effective catalysts for PMS activation is a long-term goal for its widespread practical application. A CoNi₃O₄/diatomite hybrid was prepared via vertically oriented growth of two dimensional (2D) CoNi₃O₄ nanoribbons of at. layer-thickness on a cost-effective diatomite template. Distinct from stacked CoNi₃O₄, the CoNi₃O₄/diatomite composite has abundant exposed edges, sharp corners, and open diffusion channels. Abundant exposed edges and sharp corners create more open space and active sites for PMS activation. Open diffusion channels accelerate PMS and pollutants migration. Such properties provide CoNi₃O₄/diatomite hybrid excellent PMS activation efficiency. Sulfate radical played the dominant role in atrazine degradation, and superoxide radical contributed to reversible redox cycle of Co²⁺/Co³⁺ and Ni²⁺/Ni³⁺. This work provided a strategy for cost-effective mass production of Fenton-like 2D catalysts.

Applied Catalysis, B: Environmental published new progress about 826-36-8. 826-36-8 belongs to piperidines, auxiliary class Natural product, name is 2,2,6,6-Tetramethylpiperidin-4-one, and the molecular formula is C9H17NO, SDS of cas: 826-36-8.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Ren, Zhongfei published the artcileIbuprofen degradation using a Co-doped carbon matrix derived from peat as a peroxymonosulphate activator, HPLC of Formula: 826-36-8, the publication is Environmental Research (2021), 110564, database is CAplus and MEDLINE.

The wider presence of pharmaceuticals and personal care products in nature is a major cause for concern in society. Among pharmaceuticals, the anti-inflammatory drug ibuprofen has commonly been found in aquatic and soil environments. We produced a Co-doped carbon matrix (Co-P 850) through the carbonization of Co²⁺ saturated peat and used it as a peroxymonosulfate activator to aid ibuprofen degradation The properties of Co-P 850 were analyzed using field emission SEM, energy filtered transmission electron microscopy and XPS. The characterization results showed that Co/Fe oxides were generated and tightly embedded into the carbon matrix after carbonization. The degradation results indicated that high temperature and slightly acidic to neutral conditions (pH = 5 to 7.5) promoted ibuprofen degradation efficiency in the Co-P 850/peroxymonosulfate system. Anal. showed that approx. 52% and 75% of the dissolved organic carbon was removed after 2 h and 5 h of reaction time, resp. Furthermore, the existence of chloride and bicarbonate had adverse effects on the degradation of ibuprofen. Quenching experiments and ESR anal. confirmed that SO·-4, ·OH and O ·^-2 radicals together contributed to the high ibuprofen degradation efficiency. In addition, we identified 13 degradation intermediate compounds and an ibuprofen degradation pathway by mass spectrometry anal. and quantum computing. Based on the results and methods presented in this study, we propose a novel way for the synthesis of a Co-doped catalyst from spent NaOH-treated peat and the efficient catalytic degradation of ibuprofen from contaminated water.

Environmental Research published new progress about 826-36-8. 826-36-8 belongs to piperidines, auxiliary class Natural product, name is 2,2,6,6-Tetramethylpiperidin-4-one, and the molecular formula is C9H17NO, HPLC of Formula: 826-36-8.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem