Pyridine-derivatives

Albaneze-Walker, Jennifer; Bazaral, Charles; Leavey, Tanya; Dormer, Peter G.; Murry, Jerry A. published an article in Organic Letters. The title of the article was 《Improved Carbonylation of Heterocyclic Chlorides and Electronically Challenging Aryl Bromides》.HPLC of Formula: 116383-98-3 The author mentioned the following in the article:

Optimized conditions are described that effect the carbonylation of diverse heterocyclic chlorides to yield the desired alkyl esters. In addition, bromoanilines and bromoanisoles, which normally are poor substrates under standard carbonylation protocols, were efficiently converted to the desired products under these new conditions. The nature of the metal bidentate ligand complex was found to be critical Specifically, a correlation between ligand bite angle and catalytic efficiency is documented. In the part of experimental materials, we found many familiar compounds, such as Methyl 3-chloropicolinate(cas: 116383-98-3HPLC of Formula: 116383-98-3)

Methyl 3-chloropicolinate(cas: 116383-98-3) 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.HPLC of Formula: 116383-98-3

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Liu, Zhida; Ning, Liangmin; Wang, Kaiyuan; Feng, Lixi; Gu, Wen; Liu, Xin published their research in Journal of Molecular Structure on December 5 ,2020. The article was titled 《A new imidazole-functionalized 3D-cobalt metal-organic framework as a high efficiency heterogeneous catalyst for Knoevenagel condensation reaction of furfural》.Reference of 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine The article contains the following contents:

A new 3D Co(II) based metal-organic framework [Co(pytpy)(AIP)·H2O]n (I) (C2/c)(pytpy = 4′-(4-pyridyl)-4,2′:6′,4″”-terpyridine, AIP = 5-aminoisophthalic acid) by solvothermal method was synthesized. Its crystal structure was determined with single-crystal X-ray diffraction (SC-XRD) techniques. And then Imidazole groups were introduced into I by Schiff base post-synthetic reaction to make a Lewis base sites rich MOF-based catalyst. The post-synthetic MOF-based catalyst showed an excellent performance in Knoevenagel Condensation Reaction of furfural. Moreover, the catalytic performance for others homologues of furfural RCHO [R = [5-(hydroxymethyl)furan-2-yl], 4-fluorophenyl, Pr, etc.] and malononitrile was also tested. In the experiment, the researchers used 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3Reference of 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine)

4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3) belongs to pyridine derivatives. The ring atoms in the pyridine molecule are sp2-hybridized. The nitrogen is involved in the π-bonding aromatic system using its unhybridized p orbital. Reference of 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine Pyridine has a conjugated system of six π electrons that are delocalized over the ring.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Venkateshwarlu, Rapolu; Nath Singh, Shambhu; Siddaiah, Vidavalur; Ramamohan, Hindupur; Dandela, Rambabu; Pal, Manojit published their research in Tetrahedron Letters on December 26 ,2019. The article was titled 《Ultrasound assisted one-pot synthesis of 1,2-diaryl azaindoles via Pd/C-Cu catalysis: Identification of potential cytotoxic agents》.Related Products of 39856-58-1 The article contains the following contents:

Ultrasound assisted one-pot and direct access to 1,2-diaryl substituted azaindole derivatives I [W = CH, N; X = CH, N; Y = CH, N; Z = CH, N; Ar1 = Ph, 4-ClC6H4, 4-MeC6H4; Ar2 = 4-CNC6H4, 4-MeOC6H4, 4-Me(SO2)C6H4, etc.] was achieved via the sequential N-arylation followed by coupling-cyclization under Pd/C-Cu catalysis. The methodol. involved initial C-N bond forming reaction (step 1) between an appropriate o-bromo substituted amino pyridine and iodoarene followed by C-C and C-N bond formation (step 2) between the resulting N-aryl substituted intermediate and a terminal alkyne in the same pot. A variety of azaindoles were prepared by using this method. These compounds were assessed for their cytotoxic properties against two different metastatic breast cancer cell lines e.g. MDA-MB-231 and MCF-7. Compounds I [W = Y = Z = CH, X = N, Ar1 = 4-MeC6H4, Ar2 = 4-MeOC6H4], I [W = Y = Z = CH, X = N, Ar1 = Ph, Ar2 = 4-MeOC6H4] and I [W = Y = Z = CH, X = N, Ar1 = 4-ClC6H4, Ar2 = 3,5-di-MeOC6H3] showed promising growth inhibition of these cell lines and SIRT1 inhibition in vitro. The results came from multiple reactions, including the reaction of 2-Bromopyridin-3-amine(cas: 39856-58-1Related Products of 39856-58-1)

2-Bromopyridin-3-amine(cas: 39856-58-1) belongs to anime. Reaction with nitrous acid (HNO2), which functions as an acylating agent that is a source of the nitrosyl group (―NO), converts aliphatic primary amines to nitrogen and mixtures of alkenes and alcohols corresponding to the alkyl group in a complex process. This reaction has been used for analytical determination of primary amino groups in a procedure known as the Van Slyke method.Related Products of 39856-58-1

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2013,Aik, WeiShen; Demetriades, Marina; Hamdan, Muhammad K. K.; Bagg, Eleanor. A. L.; Yeoh, Kar Kheng; Lejeune, Clarisse; Zhang, Zhihong; McDonough, Michael A.; Schofield, Christopher J. published 《Structural Basis for Inhibition of the Fat Mass and Obesity Associated Protein (FTO)》.Journal of Medicinal Chemistry published the findings.Reference of Methyl 5-bromopicolinate The information in the text is summarized as follows:

The fat mass and obesity associated protein (FTO) is a potential target for anti-obesity medicines. FTO is a 2-oxoglutarate (2OG)-dependent N-Me nucleic acid demethylase that acts on substrates including 3-methylthymidine, 3-methyluracil, and 6-methyladenine. To identify FTO inhibitors, we screened a set of 2OG analogs and related compounds using differential scanning fluorometry- and liquid chromatog.-based assays. The results revealed sets of both cyclic and acyclic 2OG analogs that are FTO inhibitors. Identified inhibitors include small mols. that have been used in clin. studies for the inhibition of other 2OG oxygenases. Crystallog. analyses reveal inhibition by 2OG cosubstrate or primary substrate competitors as well as compounds that bind across both cosubstrate and primary substrate binding sites. The results will aid the development of more potent and selective FTO inhibitors.Methyl 5-bromopicolinate(cas: 29682-15-3Reference of Methyl 5-bromopicolinate) was used in this study.

Methyl 5-bromopicolinate(cas: 29682-15-3) belongs to pyridine. Pyridine is very deactivated towards electrophilic substitution with respect to benzene. For this reason classical formylation, using methods such as the Gattermann or Vilsmeier reactions, are not generally successful. Reference of Methyl 5-bromopicolinate

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2017,Wang, Shao-Bo; Gu, Qing; You, Shu-Li published 《Rhodium(III)-Catalyzed C-H Alkynylation of Ferrocenes with Hypervalent Iodine Reagents》.Journal of Organic Chemistry published the findings.Product Details of 128071-75-0 The information in the text is summarized as follows:

Rapid access to mono- or dialkynylation of ferrocene with ethynylbenziodoxolones as the alkynylation reagents was achieved via Rh-catalyzed direct C-H bond functionalization at room temperature Mono- and dialkynylation were easily modulated by varying the sterical volume of the directing group, such as pyridine and isoquinoline, and amount of hypervalent I reagents. A wide range of ferrocene-based alkynylation products could be obtained in up to 94% yield, and a gram-scale reaction also proceeded smoothly with high efficiency. In the experimental materials used by the author, we found 2-Bromonicotinaldehyde(cas: 128071-75-0Product Details of 128071-75-0)

2-Bromonicotinaldehyde(cas: 128071-75-0) belongs to pyridine. Pyridine is widely used in the precursor to agrochemicals and pharmaceuticals. Also, it is used as an important reagent and organic solvent.Product Details of 128071-75-0

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2017,Luo, Guanglin; Chen, Ling; Conway, Charles M.; Kostich, Walter; Johnson, Benjamin M.; Ng, Alicia; Macor, John E.; Dubowchik, Gene M. published 《Asymmetric Synthesis of the Major Metabolite of a Calcitonin Gene-Related Peptide Receptor Antagonist and Mechanism of Epoxide Hydrogenolysis》.Journal of Organic Chemistry published the findings.SDS of cas: 128071-75-0 The information in the text is summarized as follows:

An asym. synthesis of the major metabolite, I, of the calcitonin gene-related peptide receptor antagonist BMS-846372 is presented. The variously substituted cyclohepta[b]pyridine ring system represents an underexplored ring system and showed some unexpected chem. Reactivities of epoxide and ketone functional groups on the cycloheptane ring were extensively controlled by a remote bulky TIPS group. The rate difference of the hydrogenolysis between two diastereomeric epoxide intermediates shed some light on the mechanism of epoxide hydrogenolysis; and further, deuterium labeling studies revealed more mechanistic details on this well-known chem. transformation for the first time. In the experiment, the researchers used 2-Bromonicotinaldehyde(cas: 128071-75-0SDS of cas: 128071-75-0)

2-Bromonicotinaldehyde(cas: 128071-75-0) belongs to pyridine. In industry and in the lab, pyridine is used as a reaction solvent, particularly when its basicity is useful, and as a starting material for synthesizing some herbicides, fungicides, and antiseptics.SDS of cas: 128071-75-0

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2017,Bayliss, Tracy; Robinson, David A.; Smith, Victoria C.; Brand, Stephen; McElroy, Stuart P.; Torrie, Leah S.; Mpamhanga, Chido; Norval, Suzanne; Stojanovski, Laste; Brenk, Ruth; Frearson, Julie A.; Read, Kevin D.; Gilbert, Ian H.; Wyatt, Paul G. published 《Design and Synthesis of Brain Penetrant Trypanocidal N-Myristoyltransferase Inhibitors》.Journal of Medicinal Chemistry published the findings.Electric Literature of C7H9NO The information in the text is summarized as follows:

N-Myristoyltransferase (NMT) represents a promising drug target within the parasitic protozoa Trypanosoma brucei (T. brucei), the causative agent for human African trypanosomiasis (HAT) or sleeping sickness. The authors have previously validated T. brucei NMT as a promising druggable target for the treatment of HAT in both stages 1 and 2 of the disease. The authors report on the use of the previously reported DDD85646 as a starting point for the design of a class of potent, brain penetrant inhibitors of T. brucei NMT. After reading the article, we found that the author used 2-(2-Hydroxyethyl)pyridine(cas: 103-74-2Electric Literature of C7H9NO)

2-(2-Hydroxyethyl)pyridine(cas: 103-74-2) belongs to pyridine. Pyridine is very deactivated towards electrophilic substitution with respect to benzene. For this reason classical formylation, using methods such as the Gattermann or Vilsmeier reactions, are not generally successful. Electric Literature of C7H9NO

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2018,Gao, Qian; Xu, Senmiao published 《Palladium-catalyzed synthesis of fluorenones from bis(2-bromophenyl)methanols》.Organic & Biomolecular Chemistry published the findings.Recommanded Product: 128071-75-0 The information in the text is summarized as follows:

A palladium-catalyzed synthesis method of fluorenones was developed. A variety of bis(2-bromophenyl)methanols underwent the reaction smoothly in the presence of Pd(OAc)2, affording a series of fluorenones in moderate to good yields (two steps). Mechanistic studies revealed that the reaction might be triggered by oxidation of alc. followed by intramol. reductive coupling. The experimental process involved the reaction of 2-Bromonicotinaldehyde(cas: 128071-75-0Recommanded Product: 128071-75-0)

2-Bromonicotinaldehyde(cas: 128071-75-0) belongs to pyridine. Pyridine’s structure is isoelectronic with that of benzene, but its properties are quite different. Pyridine is completely miscible with water, whereas benzene is only slightly soluble. Like all hydrocarbons, benzene is neutral (in the acid–base sense), but because of its nitrogen atom, pyridine is a weak base.Recommanded Product: 128071-75-0

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2018,Pandey, Khima; Rangan, Krishnan; Kumar, Anil published 《One-Pot Tandem Amidation, Knoevenagel Condensation, and Palladium-Catalyzed Wacker Type Oxidation/C-O Coupling: Synthesis of Chromeno-Annulated Imidazopyridines》.Journal of Organic Chemistry published the findings.Synthetic Route of C6H4BrNO The information in the text is summarized as follows:

N-(2-ethoxy-2-oxoethyl)-2-aminopyridinium bromides underwent one-pot tandem intramol. amidation, Knoevenagel condensation, Wacker-type oxidation, and intramol. C-O coupling reactions with bromoaryl aldehydes and β-bromo-α,β-unsaturated aldehydes in the presence of Pd(F3CCO2)2 and mediated by Cu(OAc)2, O2, and K3PO4 in aqueous DMF to yield chromenoimidazopyridinones such as I and pyranoimidazopyridinones in 28-77% yields. The mechanism of the reaction was studied; a bromobenzylideneimidazopyridinone intermediate was isolated and found to lead to I under the reaction conditions, and potential intermediates were observed by mass spectrometry. The experimental part of the paper was very detailed, including the reaction process of 2-Bromonicotinaldehyde(cas: 128071-75-0Synthetic Route of C6H4BrNO)

2-Bromonicotinaldehyde(cas: 128071-75-0) belongs to pyridine. Pyridines are often used as catalysts or reagents; particular notice has been paid recently to how pyridine coordinates to metal centers enabling a wide range of valuable reactions. Synthetic Route of C6H4BrNO

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2019,Journal of Organic Chemistry included an article by Zhang, Yazhen; Huang, Liliang; Li, Xiaoyang; Wang, Le; Feng, Huangdi. Recommanded Product: 2-Bromonicotinaldehyde. The article was titled 《Chemo- and Diastereoselective Synthesis of N-Propargyl Oxazolidines through a Copper-Catalyzed Domino A3 Reaction》. The information in the text is summarized as follows:

Herein we describe a highly chemoselective A3-coupling/annulation of amino alcs., formaldehyde, two kinds of aldehydes and alkynes, catalyzed by copper(II). This cascade reaction, employing readily available materials, provides a new and highly effective access to chiral N-propargyl oxazolidines with good diastereoselectivity (up to >20:1). In the case of ortho-substituted aromatic aldehydes, an intriguing steric effect is observed: a bulky group exhibits a remarkably adverse effect on the diastereoselectivity for the formation of the title mol. In the experiment, the researchers used 2-Bromonicotinaldehyde(cas: 128071-75-0Recommanded Product: 2-Bromonicotinaldehyde)

2-Bromonicotinaldehyde(cas: 128071-75-0) belongs to pyridine. Pyridines are often used as catalysts or reagents; particular notice has been paid recently to how pyridine coordinates to metal centers enabling a wide range of valuable reactions. Recommanded Product: 2-Bromonicotinaldehyde

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem