Day: December 30, 2022

Challenging nickel-catalysed amine arylations enabled by tailored ancillary ligand design was written by Lavoie, Christopher M.;MacQueen, Preston M.;Rotta-Loria, Nicolas L.;Sawatzky, Ryan S.;Borzenko, Andrey;Chisholm, Alicia J.;Hargreaves, Breanna K. V.;McDonald, Robert;Ferguson, Michael J.;Stradiotto, Mark. And the article was included in Nature Communications in 2016.Name: 6-Chloroquinoxaline This article mentions the following:

An operationally simple and air-stable ligand/nickel(II) pre-catalyst that accommodated the broadest combination of C(sp²)-N coupling partners reported to date for any single nickel catalyst, without the need for a precious-metal co-catalyst was reported. Key to the unprecedented performance of this pre-catalyst was the application of the new, sterically demanding yet electron-poor bisphosphine PAd-DalPhos. Featured were the first reports of nickel-catalyzed room temperature reactions involving challenging primary alkylamine and ammonia reaction partners employing an unprecedented scope of electrophiles, including transformations involving sought-after (hetero)aryl mesylates for which no capable catalyst system was known. In the experiment, the researchers used many compounds, for example, 6-Chloroquinoxaline (cas: 5448-43-1Name: 6-Chloroquinoxaline).

6-Chloroquinoxaline (cas: 5448-43-1) belongs to quinoxaline derivatives. Quinoxalines are important class of heterocyclic compounds, associated with wider pharmacological applications. Modifying quinoxaline structure it is possible to obtain a wide variety of biomedical applications, namely antimicrobial activities and chronic and metabolic diseases treatment.Name: 6-Chloroquinoxaline

Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider

Application of the AMYR calculating method on quinoxaline, 3-chloroquinoxaline, and 3-methylquinoxaline in the interaction with n water molecules (n varies from 1 to 6) was written by El Assyry, A.;Benali, B.;Boucetta, A.;Lakhrissi, B.. And the article was included in Journal of Structural Chemistry in 2014.Computed Properties of C8H5ClN2 This article mentions the following:

AMYR is a computer program for the calculation of mol. associations using Fraga’s pairwise atom-atom potential. The interaction energy is evaluated through a 1/R expansion. A pairwise dispersion energy term is included in the potential and corrected by a damping function. The program carries out energy minimizations through variable metric methods. The new version allows for the stationary point anal. of the intermol. potential by means of the Hessian eigenvalues. AMYR model is used for the first time in a calculation of quinoxaline, 3-chloroquinoxaline, and 3-methylquinoxaline mols. interacting with some water mols. Intermol. interaction energies are obtained and the stable conformation is determined in each case. The change conformation was considered at α ≈ (CNC) angle when the solute mols. are surrounded by n water mols. (1 ≤ n ≤ 6). In the experiment, the researchers used many compounds, for example, 6-Chloroquinoxaline (cas: 5448-43-1Computed Properties of C8H5ClN2).

6-Chloroquinoxaline (cas: 5448-43-1) belongs to quinoxaline derivatives. Quinoxalines have received a significant amount of attention due to their potential use in fighting various pathophysiological conditions like epilepsy, Parkinson’s, and Alzheimer’s diseases. They are well-known for application in organic light emitting devices, polymers and pharmaceutical agents. The quinoxaline-containing polymers are applicable in optical devices due to their thermal stability and low band gap.Computed Properties of C8H5ClN2

Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider

General and Mild Nickel-Catalyzed Cyanation of Aryl/Heteroaryl Chlorides with Zn(CN)₂: Key Roles of DMAP was written by Zhang, Xingjie;Xia, Aiyou;Chen, Haoyi;Liu, Yuanhong. And the article was included in Organic Letters in 2017.Recommanded Product: 6-Chloroquinoxaline This article mentions the following:

A new and general nickel-catalyzed cyanation of hetero(aryl) chlorides using less toxic Zn(CN)₂ as the cyanide source has been developed. The reaction relies on the use of inexpensive NiCl₂·6H₂O/dppf/Zn as the catalytic system and DMAP as the additive, allowing the cyanation to occur under mild reaction conditions (50-80 °C) with wide functional group tolerance. DMAP was found to be crucial for successful transformation, and the reaction likely proceeds via a Ni(0)/Ni(II) catalysis based on mechanistic studies. The method was also successfully extended to aryl bromides and aryl iodides. In the experiment, the researchers used many compounds, for example, 6-Chloroquinoxaline (cas: 5448-43-1Recommanded Product: 6-Chloroquinoxaline).

6-Chloroquinoxaline (cas: 5448-43-1) belongs to quinoxaline derivatives. Quinoxaline is isomeric with other naphthyridines including quinazoline, phthalazine and cinnoline. Quinoxalines are used as dyes, pharmaceuticals, and antibiotics such as echinomycin, levomycin exhibiting antitumoral properties. Quinoxalines establish also the basis of anthelmintics and receptor antagonists.Recommanded Product: 6-Chloroquinoxaline

Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider

Synthesis of N-(Hetero)aryl Carbamates via CuI/MNAO Catalyzed Cross-Coupling of (Hetero)aryl Halides with Potassium Cyanate in Alcohols was written by Kumar, S. Vijay;Ma, Dawei. And the article was included in Journal of Organic Chemistry in 2018.Safety of 6-Chloroquinoxaline This article mentions the following:

An efficient route to N-(hetero)aryl carbamates, e.g. I, was developed through CuI/MNAO [2-((2-methylnaphthalen-1-yl)amino)-2-oxoacetic acid] catalyzed cross-coupling of (hetero)aryl chlorides with potassium cyanate in alcs. at 120-130 °C. This method utilizes broadly available substrates to afford various N-(hetero)aryl carbamates in good to excellent yields. Moreover, (hetero)aryl bromides and (hetero)aryl iodides were also reacted at low catalyst loadings and relatively low temperatures to provide N-(hetero)aryl carbamates. In the experiment, the researchers used many compounds, for example, 6-Chloroquinoxaline (cas: 5448-43-1Safety of 6-Chloroquinoxaline).

6-Chloroquinoxaline (cas: 5448-43-1) belongs to quinoxaline derivatives. Quinoxaline derivatives are important constituents of pharmacologically active compounds, including as well as for RNA synthesis inhibition, reactive dyes and pigments, azo dyes, flurox Cylin Dyes, Corrosion Inhibitors and Photovoltaic Polymers. They are well-known for application in organic light emitting devices, polymers and pharmaceutical agents. The quinoxaline-containing polymers are applicable in optical devices due to their thermal stability and low band gap.Safety of 6-Chloroquinoxaline

Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider

Efficient synthesis of quinoxalines from 2-nitroanilines and vicinal diols via a ruthenium-catalyzed hydrogen transfer strategy was written by Xie, Feng;Zhang, Min;Jiang, Huanfeng;Chen, Mengmeng;Lv, Wan;Zheng, Aibin;Jian, Xiujuan. And the article was included in Green Chemistry in 2015.Synthetic Route of C9H8N2O This article mentions the following:

Via a ruthenium-catalyzed hydrogen transfer strategy, we have demonstrated a one-pot method for efficient synthesis of quinoxalines e. g., I, from 2-nitroanilines and biomass-derived vicinal diols for the first time. In such a synthetic protocol, the diols and the nitro group serve as the hydrogen suppliers and acceptors, resp. Hence, there is no need for the use of external reducing agents. Moreover, it has the advantages of operational simplicity, broad substrate scope and the use of renewable reactants, offering an important basis for accessing various quinoxaline derivatives In the experiment, the researchers used many compounds, for example, 6-Methoxyquinoxaline (cas: 6639-82-3Synthetic Route of C9H8N2O).

6-Methoxyquinoxaline (cas: 6639-82-3) belongs to quinoxaline derivatives. Quinoxaline derivatives are important constituents of pharmacologically active compounds, including antibacterial, antibiotic and antineoplastic, antifungal, anti-inflammatory and analgesic drugs. The parent substance of the group, quinoxaline, results when glyoxal is condensed with 1,2-diaminobenzene. Substituted derivatives arise when α-ketonic acids, α-chlorketones, α-aldehyde alcohols and α-ketone alcohols are used in place of diketones.Synthetic Route of C9H8N2O

Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider

Halo o-phenylenediamines and derived heterocyles. Hydrodechlorination of chloroquinoxalines was written by Burton, D. E.;Hughes, D.;Newbold, G. T.;Elvidge, J. A.. And the article was included in Journal of the Chemical Society [Section] C: Organic in 1968.Name: 6-Chloroquinoxaline This article mentions the following:

Treatment of 5,6,8-trichloro-7-methylquinoxaline (I) with alkali in aqueous EtOH gives 5,8-dichloro-6-methylquinoxaline (II) cleanly in good yield. 5,6,7,8-Tetrachloroquinoxaline similarly, though less satisfactorily, yields 5,6,8-trichloroquinoxaline and 5,8-dichloroquinoxaline. Further experiments with a bearing on the course of these reactions are described and a possible mechanism is discussed. The preparation of 5,8-dichloro-6-ethoxy-7-methylquinoxaline, a possible product from the reaction I → II, and unambiguous syntheses of III and 5,7-dichloro-6-methylquinoxaline are described. Ir and 1H N.M.R. data for several quinoxalines and their intermediates are also given. In the experiment, the researchers used many compounds, for example, 6-Chloroquinoxaline (cas: 5448-43-1Name: 6-Chloroquinoxaline).

6-Chloroquinoxaline (cas: 5448-43-1) belongs to quinoxaline derivatives. Compounds possessing quinoxaline derivatives were bestowed with a variety of significant biological properties such as antiviral, antimalarial, anticancer, DNA intercalation, DNA duplex stabilization, and many others. Quinoxaline-1,4-di-N-oxide derivatives have shown to improve the biological results and are endowed with anti-viral, anti-cancer, anti-bacterial, and anti-protozoal activities with application in many other therapeutic areas.Name: 6-Chloroquinoxaline

Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider

Theoretical investigation in the ground state of the energetic and structural properties of quinoxaline and two of its derivatives: 3-chloroquinoxaline and 3-methylquinoxaline was written by El Assyry, A.;Benali, B.;Lazar, Z.;Boucetta, A.;Elblidi, K.;Lakhrissi, B.;Massoui, M.. And the article was included in Physical & Chemical News in 2007.SDS of cas: 5448-43-1 This article mentions the following:

AM1 and MNDO semi – empirical methods of calculation are used to obtain information on the structural and energy properties for some quinoxaline derivatives Formation heat, at. charges and dipole moments permit qual. predictions about the substituent effects by a chlorine or Me group on the quinoxaline properties in the ground state. In the experiment, the researchers used many compounds, for example, 6-Chloroquinoxaline (cas: 5448-43-1SDS of cas: 5448-43-1).

6-Chloroquinoxaline (cas: 5448-43-1) belongs to quinoxaline derivatives. Quinoxalines have received a significant amount of attention due to their potential use in fighting various pathophysiological conditions like epilepsy, Parkinson’s, and Alzheimer’s diseases. They are well-known for application in organic light emitting devices, polymers and pharmaceutical agents. The quinoxaline-containing polymers are applicable in optical devices due to their thermal stability and low band gap.SDS of cas: 5448-43-1

Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider

Hydrogen Auto-transfer Synthesis of Quinoxalines from o-Nitroanilines and Biomass-based Diols Catalyzed by MOF-derived N,P Co-doped Cobalt Catalysts was written by Sun, Kangkang;Li, Dandan;Lu, Guo-Ping;Cai, Chun. And the article was included in ChemCatChem in 2021.Formula: C8H5ClN2 This article mentions the following:

A Co-based heterogeneous catalyst supported on N,P co-doped porous carbon (Co@NCP) is prepared via a facile in-situ doping-carbonization method. The Co@NCP composite features a large surface area, high pore volume, high-d. and strong basic sites. Furthermore, doping of P atoms can regulate the electronic d. of Co. Therefore, Co@NCP exhibited good performance for the synthesis of quinoxalines from o-nitroanilines and biomass-derived diols under alkali-free conditions. In the experiment, the researchers used many compounds, for example, 6-Chloroquinoxaline (cas: 5448-43-1Formula: C8H5ClN2).

6-Chloroquinoxaline (cas: 5448-43-1) belongs to quinoxaline derivatives. Quinoxalines have received a significant amount of attention due to their potential use in fighting various pathophysiological conditions like epilepsy, Parkinson’s, and Alzheimer’s diseases. Quinoxaline-1,4-di-N-oxide derivatives have shown to improve the biological results and are endowed with anti-viral, anti-cancer, anti-bacterial, and anti-protozoal activities with application in many other therapeutic areas.Formula: C8H5ClN2

Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider

Assembly of Primary (Hetero)Arylamines via CuI/Oxalic Diamide-Catalyzed Coupling of Aryl Chlorides and Ammonia was written by Fan, Mengyang;Zhou, Wei;Jiang, Yongwen;Ma, Dawei. And the article was included in Organic Letters in 2015.Recommanded Product: 6-Chloroquinoxaline This article mentions the following:

A general and practical catalytic system for aryl amination of aryl chlorides with aqueous or gaseous ammonia has been developed, with CuI as the catalyst and bisaryl oxalic diamides as the ligands. The reaction proceeds at 105-120 °C to provide a diverse set of primary (hetero)aryl amines in high yields with various functional groups. In the experiment, the researchers used many compounds, for example, 6-Chloroquinoxaline (cas: 5448-43-1Recommanded Product: 6-Chloroquinoxaline).

6-Chloroquinoxaline (cas: 5448-43-1) belongs to quinoxaline derivatives. Quinoxalines have received a significant amount of attention due to their potential use in fighting various pathophysiological conditions like epilepsy, Parkinson’s, and Alzheimer’s diseases. The antitumoral properties of quinoxaline compounds have been of interest. Recently, quinoxaline and its analogs have been investigated as the catalyst’s ligands.Recommanded Product: 6-Chloroquinoxaline

Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider

Novel antagonists of 5-HT₃ receptors. Synthesis and biological evaluation of piperazinylquinoxaline derivatives was written by Monge, A.;Palop, J. A.;Del Castillo, J. C.;Caldero, J. M.;Roca, J.;Romero, G.;Del Rio, J.;Lasheras, B.. And the article was included in Journal of Medicinal Chemistry in 1993.Application In Synthesis of Ethyl 3-chloroquinoxaline-2-carboxylate This article mentions the following:

A series of piperazinylquinoxalines I (R = alkyl, Ph, substituted Ph, R¹ = H; R = H, Et, R¹ = NO₂) were synthesized and studied as 5-HT₃ receptor antagonists in different preparations Antagonism to 5-HT in the longitudinal muscle of the guinea pig ileum was particularly prominent in cyanoquinoxaline derivatives with an alkyl substituent on the piperazine moiety. The pA₂ of some selected compounds against the 5-HT₃ agonist 2-methyl-5HT in the guinea pig ileum was in the range of tropisetron or ondansetron, and one of them, I (R = allyl, R¹ = H), was more potent than these reference compounds by approx. 2 or 3 orders of magnitude. However, these compounds were markedly less potent than either tropisetron or ondansetron as displacers of ³H-BRL 43694 binding to rat cortical membranes or as antagonists of the Bezold-Jarisch reflex in rats. Piperazinylcyanoquinoxalines represent a new class of 5-HT₃ antagonists with a selective effect on guinea pig peripheral receptors. In the experiment, the researchers used many compounds, for example, Ethyl 3-chloroquinoxaline-2-carboxylate (cas: 49679-45-0Application In Synthesis of Ethyl 3-chloroquinoxaline-2-carboxylate).

Ethyl 3-chloroquinoxaline-2-carboxylate (cas: 49679-45-0) belongs to quinoxaline derivatives. Quinoxaline derivatives are important constituents of pharmacologically active compounds, including antibacterial, antibiotic and antineoplastic, antifungal, anti-inflammatory and analgesic drugs. The parent substance of the group, quinoxaline, results when glyoxal is condensed with 1,2-diaminobenzene. Substituted derivatives arise when α-ketonic acids, α-chlorketones, α-aldehyde alcohols and α-ketone alcohols are used in place of diketones.Application In Synthesis of Ethyl 3-chloroquinoxaline-2-carboxylate

Referemce:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider