Category: 40360-44-9

Application In Synthesis of 3,5,6-Trichloropicolinic acidOn March 30, 2010, Ma, Chun An; Li, Mei Chao; Liu, Yan Na; Xu, Ying Hua published an article in Electrochimica Acta. The article was 《In situ FTIR studies on the electrochemical hydrodechlorination of 3,4,5,6-tetrachloropicolinic acid on Ag cathode》. The article mentions the following:

The electrochem. hydrodechlorination reaction from starting material 3,4,5,6-tetrachloropicolinic acid (3,4,5,6-TCP) to the end product 3,6-dichloropicolinic acid (3,6-DCP) was studied by cyclic voltammetry and in situ FTIR spectroscopy (in situ FTIR). Compared with Cu and glassy C, Ag cathode showed a high electrocatalytic activity for the irreversible reduction process of 3,4,5,6-TCP in NaOH aqueous solution In situ FTIR results suggested that electrochem. hydrodechlorination took place in the 4- or 5-position of 3,4,5,6-TCP on Ag cathode after receiving an electron to get mixed trichloropicolinic acid free radical, which could receive another electron and give 3,5,6-trichloropicolinic acid (3,5,6-TCP) and 3,4,6-trichloropicolinic acid (3,4,6-TCP) at the potential more pos. than -1000 mV afterwards. Finally, 3,5,6-TCP and 3,4,6-TCP were further dechlorinated to produce 3,6-dichloropicolinic acid (3,6-DCP) at the potential more neg. than -1000 mV. Further studies of preparative electrolysis experiments by constant current electrolysis were carried out. The results were in good agreement with those from in situ FTIR studies. In the experimental materials used by the author, we found 3,5,6-Trichloropicolinic acid(cas: 40360-44-9Application In Synthesis of 3,5,6-Trichloropicolinic acid)

3,5,6-Trichloropicolinic acid(cas: 40360-44-9) belongs to pyridine. Pyridine, its benzo and pyridine-based compounds play diverse roles in organic chemistry. As ligands, solvents, and catalysts they facilitate reactions; thus descriptions of these new ligands and their applications abound each year.Application In Synthesis of 3,5,6-Trichloropicolinic acid

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Xu, Yinghua; Ding, Xufen; Ma, Hongxing; Chu, Youqun; Ma, Chunan published an article in Electrochimica Acta. The title of the article was 《Selective hydrodechlorination of 3,5,6-trichloropicolinic acid at an activated silver cathode: Synthesis of 3,5-dichloropicolinic acid》.Related Products of 40360-44-9 The author mentioned the following in the article:

Electrochem. reduction of 3,5,6-trichloropicolinic acid (3,5,6-T) at glassy carbon, Ni, Cu, and Ag cathodes in aqueous solutions at different pH values was studied. Probably the selectivity of the reduction strongly depends on the cathode materials used and the pH of the aqueous solutions A high selectivity for the hydrodechlorination of 3,5,6-T to 3,5-dichloropicolinic acid (3,5-D) was achieved exclusively at an activated Ag cathode and at pH 3: a selectivity of 95% at 42% conversion under potentiostatic mode and a selectivity of 89% at 88% conversion under intentiostatic mode. An explanation is proposed for this high selectivity. After reading the article, we found that the author used 3,5,6-Trichloropicolinic acid(cas: 40360-44-9Related Products of 40360-44-9)

3,5,6-Trichloropicolinic acid(cas: 40360-44-9) belongs to pyridine. Pyridine, its benzo and pyridine-based compounds play diverse roles in organic chemistry. As ligands, solvents, and catalysts they facilitate reactions; thus descriptions of these new ligands and their applications abound each year.Related Products of 40360-44-9

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

《Electrocatalytic dechlorination of chloropicolinic acid mixtures by using palladium-modified metal cathodes in aqueous solutions》 was written by Ma, Hongxing; Xu, Yinghua; Ding, Xufen; Liu, Qi; Ma, Chun-An. Formula: C6H2Cl3NO2 And the article was included in Electrochimica Acta on August 20 ,2016. The article conveys some information:

In China, chloropicolinic acid (ClPA) mixtures comprising 3,5,6-trichloropicolinic acid, 3,6-dichloropicolinic acid (3,6-D), 3-ClPA, and 6-ClPA are discharged as organic wastes at a rate of ∼300 tons per yr. The authors developed an aqueous phase electrocatalytic hydrogenation (ECH) system based on Pd catalyst to dechlorinate the ClPA mixtures into picolinic acid (PA) at room temperature Firstly, the authors evaluated the influence of cathode support and Pd loading on the catalytic performance of cathodes, as well as the effects of operating parameters on the intermediate product selectivity and dechlorination efficiency of the ECH process with 3,6-D as the target compound Secondly, the authors analyzed the ECH dechlorination mechanism of 3,6-D with regard to the surface condition of cathode and catholyte pH, and the rate-limiting step of the dechlorination process is also discussed. Finally, the authors assessed the practicability of the ECH system to dechlorinate the ClPA mixtures into PA by using a plate-and-frame cell. Pd/Ni foam cathodes with Pd loading of 2.25-3.6 mg cm-2 exhibited the optimum ECH dechlorination performance, and the basic aqueous solution and high 3,6-D concentration favored the ECH process. The ClPA mixtures with 47 g L-1 concentration (the total concentration of ClPAs was ∼250 mM) can be selectively dechlorinated into PA with 99% yield, 76.3% current efficiency, and 2.47 kW h kg-1 PA specific elec. energy consumption at a c.d. of 208 A m-2 in a 1.25 M NaOH aqueous solution In addition to this study using 3,5,6-Trichloropicolinic acid, there are many other studies that have used 3,5,6-Trichloropicolinic acid(cas: 40360-44-9Formula: C6H2Cl3NO2) was used in this study.

3,5,6-Trichloropicolinic acid(cas: 40360-44-9) belongs to pyridine. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Additionally, pyridine-based natural products continue to be discovered and studied for their properties and to understand their biosynthesis.Formula: C6H2Cl3NO2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Formula: C6H2Cl3NO2On May 1, 2008 ,《Degradation of picloram by the electro-Fenton process》 appeared in Journal of Hazardous Materials. The author of the article were Oezcan, Ali; Sahin, Yuecel; Koparal, A. Savas; Oturan, Mehmet A.. The article conveys some information:

The degradation of the picloram, a widely used herbicide, was undertaken by the electrochem. advanced oxidation process, namely electro-Fenton in aqueous solution This process generates catalytically OH radicals that are strong oxidizing reagents for the oxidation of organic substances. Degradation kinetics of picloram was investigated. Kinetic results evidence a pseudo first-order degradation, with a rate constant of reaction between picloram and OH radicals of (2.73 ± 0.08) × 109 M-1 s-1. The effect of applied current and catalyst concentration on the degradation and mineralization of picloram was also investigated. The optimum applied current and catalyst concentration values for the degradation of picloram was determined as 300 mA and 0.2 mM Fe3+, resp. Mineralization of picloram was followed by the total organic carbon (TOC) anal. At the end of 8 h of electrolysis, 95% of the initial TOC was removed. Several degradation products were identified by using HPLC, LC-MS, GC-MS, and IC anal. The identified byproducts allowed to propose a mineralization pathway for the picloram degradation In the experiment, the researchers used many compounds, for example, 3,5,6-Trichloropicolinic acid(cas: 40360-44-9Formula: C6H2Cl3NO2)

3,5,6-Trichloropicolinic acid(cas: 40360-44-9) belongs to pyridine. Pyridine, its benzo and pyridine-based compounds play diverse roles in organic chemistry. As ligands, solvents, and catalysts they facilitate reactions; thus descriptions of these new ligands and their applications abound each year.Formula: C6H2Cl3NO2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Bobbio, Carla; Schlosser, Manfred published their research in European Journal of Organic Chemistry on December 31 ,2001. The article was titled 《Regiochemical flexibility: the optional functionalization of 2,3,5-trihalopyridines at the 4- or 6-position》.Product Details of 40360-44-9 The article contains the following contents:

A deprotonation study was performed using 2,3,5-trichloropyridine, 3,5-dichloro-2-fluoropyridine, and 5-chloro-2,3-difluoropyridine as the substrates. Upon reaction with lithium diisopropylamide (LDA), deprotonation occurred exclusively at the 4-position. Subsequent carboxylation and iodination led to the acids and 4-iodopyridines. The exposure of the latter compounds to lithium 2,2,6,6-tetramethylpiperidide (LITMP) caused deprotonation and immediately ensuing iodine migration. The intermediates were trapped with dry ice to afford the carboxylic acids. Upon neutralization, the 6-iodopyridines were obtained. These compounds readily exchanged the heavy halogen for metal when treated with isopropylmagnesium chloride. In this way, functional groups could be selectively introduced in the 6-position. Employing carbon dioxide routinely as the model electrophile, trihalopyridinecarboxylic acids were formed which, all unknown so far, should provide valuable new building blocks for pharmaceutical research. Moreover, the selective nucleophilic displacement of the halogen at the 2-position could give rise to an immense variety of new structures. In the experimental materials used by the author, we found 3,5,6-Trichloropicolinic acid(cas: 40360-44-9Product Details of 40360-44-9)

3,5,6-Trichloropicolinic acid(cas: 40360-44-9) belongs to pyridine. Pyridine, its benzo and pyridine-based compounds play diverse roles in organic chemistry. As ligands, solvents, and catalysts they facilitate reactions; thus descriptions of these new ligands and their applications abound each year.Product Details of 40360-44-9

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Recommanded Product: 3,5,6-Trichloropicolinic acidOn March 31, 2009, Slotkin, Theodore A.; Seidler, Frederic J.; Wu, Changlong; MacKillop, Emiko A.; Linden, Karl G. published an article in Environmental Health Perspectives. The article was 《Ultraviolet photolysis of chlorpyrifos: developmental neurotoxicity modeled in PC12 cells》. The article mentions the following:

UV photodegradation products from pesticides form both in the field and during water treatment. We evaluated the photolytic breakdown of the organophosphate pesticide chlorpyrifos (CPF) in terms of both the chem. entities generated by low-pressure UV C irradiation and their potential as developmental neurotoxicants. We separated byproducts using high-performance liquid chromatog. and characterized them by gas chromatog./mass spectrometry. We assessed neurotoxicity in neuronotypic PC12 cells, both in the undifferentiated state and during differentiation. Photodegradation of CPF in methanol solution generated CPF oxon and trichloropyridinol, products known to retain developmental neurotoxicant actions, as well as a series of related organophosphate and phosphorothionate derivatives Exposure conditions that led to 50% degradation of CPF thus did not reduce developmental neurotoxicity. The degradation mixture inhibited DNA synthesis in undifferentiated cells to the same extent as native CPF. In differentiating cells, the products likewise retained the full ability to elicit shortfalls in cell number and corresponding effects on cell growth and neurite formation. When the exposure was prolonged to the point where 70% of the CPF was degraded, the adverse effects on PC12 cells were no longer evident; however, these conditions were sufficiently severe to generate toxic products from the methanol vehicle. Our results indicate that field conditions or remediation treatments that degrade a significant proportion of the CPF do not necessarily produce inactive products and, indeed, may elicit formation of even more toxic chems. that are more water soluble and thus have greater field mobility than CPF itself. The experimental part of the paper was very detailed, including the reaction process of 3,5,6-Trichloropicolinic acid(cas: 40360-44-9Recommanded Product: 3,5,6-Trichloropicolinic acid)

3,5,6-Trichloropicolinic acid(cas: 40360-44-9) belongs to pyridine. Pyridine, its benzo and pyridine-based compounds play diverse roles in organic chemistry. As ligands, solvents, and catalysts they facilitate reactions; thus descriptions of these new ligands and their applications abound each year.Recommanded Product: 3,5,6-Trichloropicolinic acid

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

《Heterogeneous photocatalytic degradation of picloram, dicamba, and floumeturon in aqueous suspensions of titanium dioxide》 was published in Journal of Environmental Science and Health in 2005. These research results belong to Rahman, M. Atiqur; Muneer, M.. COA of Formula: C6H2Cl3NO2 The article mentions the following:

Heterogeneous photocatalytic degradation of picloram, dicamba and floumeturon has been investigated in aqueous suspensions of titanium dioxide under a variety of conditions. The degradation was studied by monitoring the change in substrate concentration employing UV spectroscopic technique and decrease in total organic carbon (TOC) content as a function of irradiation time under a variety of conditions. The degradation of the herbicide was studied under different conditions such as pH, catalyst concentration, substrate concentration, different types of TiO2, and in the presence of electron acceptors such as H2O2, KBrO3, and (NH4)2S2O8 besides mol. oxygen. The degradation rates were found to be strongly influenced by all the above parameters. The photocatalyst Degussa P25 was found to be more efficient as compared with other photocatalysts in the case of dicamba and floumeturon, whereas Hombikat UV100 was found to be better for the degradation of picloram. The herbicide picloram was found to degrade faster as compared to dicamba and floumeturon. The degradation products were analyzed by gas chromatog.-mass spectrometry (GC/MS) technique, and plausible mechanisms for the formation of products have been proposed. The experimental part of the paper was very detailed, including the reaction process of 3,5,6-Trichloropicolinic acid(cas: 40360-44-9COA of Formula: C6H2Cl3NO2)

3,5,6-Trichloropicolinic acid(cas: 40360-44-9) belongs to pyridine. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Additionally, pyridine-based natural products continue to be discovered and studied for their properties and to understand their biosynthesis.COA of Formula: C6H2Cl3NO2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem