Category: 20028-53-9

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Visible-Light-Induced Benzylic C-H Functionalization for the Synthesis of 2-Arylquinazolines, published in 2019, which mentions a compound: 20028-53-9, Name is 2-Amino-5-chlorobenzaldehyde, Molecular C7H6ClNO, Formula: C7H6ClNO.

This work reports a mild and efficient approach for the synthesis of substituted quinazolines using 1-(2-aminoaryl)ethan-1-ones in conjunction with arylmethanamines as starting materials via visible-light-induced benzylic C-H functionalization. The reaction proceeded at room temperature with low catalyst loading and the reaction system was clean from beginning to end. Significantly, this method exhibited good tolerance even to free hydroxyl group and amino group contained in substrates.

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Formula: C7H6ClNO. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 2-Amino-5-chlorobenzaldehyde, is researched, Molecular C7H6ClNO, CAS is 20028-53-9, about A One-Step Synthesis of 2,4-Unsubstituted Quinoline-3-carboxylic Acid Esters from o-Nitrobenzaldehydes. Author is Venkatesan, Hariharan; Hocutt, Frances M.; Jones, Todd K.; Rabinowitz, Michael H..

A straightforward and efficient one-step procedure for the synthesis of 2,4-unsubstituted quinoline-3-carboxylic acid Et esters, e.g., I (R1 = Me, Et; R2 = H, F, Cl, Br, OH), is described. The simple reductive cyclization is carried out by treating various substituted o-nitrobenzaldehydes with inexpensive, com. available 3,3-diethoxypropionic acid Et ester and SnCl2·2H2O in refluxing ethanol.

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In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Ru(III)-catalyzed construction of variously substituted quinolines from 2-aminoaromatic aldehydes (ketones) and isoxazoles: Isoxazoles as cyclization reagent and cyano sources, published in , which mentions a compound: 20028-53-9, mainly applied to aminoarom carbonyl compound isoxazole ruthenium catalyst cyclization; cyanoquinoline preparation green chem, HPLC of Formula: 20028-53-9.

A Ru(III)-catalyzed annulation reaction of 2-aminoarom. aldehydes (ketones) and isoxazoles to afford diverse 3-cyanoquinolines was developed. Notably, isoxazole acted as a cyclization reagent and nontoxic cyano source via N-O bond cleavage and fragmentation. Variously substituted (especially 6- or 7-substituted) quinolines could be easily afforded. This procedure featured wide functional group compatibility, efficiency and avoiding toxic cyano source. Meanwhile, this protocol could be successfully applied to scale-up synthesis. Further chem. transformations of 3-cyanoquinoline could give some valuable skeletons, demonstrating its potential in synthetic application.

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Tetrahydrofuran – Wikipedia,
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The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 2-Amino-5-chlorobenzaldehyde, is researched, Molecular C7H6ClNO, CAS is 20028-53-9, about Friedlander synthesis of highly functionalized isoxazolyl quinoline libraries via addition of C(sp3)-H bond to aldehydes, the main research direction is isoxazolyl quinoline preparation; dimethyl nitroisoxazole amino benzaldehyde ionic liquid Friedlander synthesis.Reference of 2-Amino-5-chlorobenzaldehyde.

A novel protocol for ionic liquid (IL)-mediated C(sp3)-H bond functionalization of 3,5-dimethyl-4-nitroisoxazoles to substituted o-aminobenzaldehydes was developed in excellent yields. Isoxazolyl aryl ethanones have been synthesized from isoxazolyl aryl ethanol synthon. Furthermore, the later was utilized as synthons for IL promoted Friedlander synthesis of highly functionalized isoxazole substituted quinoline libraries. The merit of this synthesis is easily available and economical starting materials, effective utilization of all the reactants, and simple workup procedure. It is noteworthy that ionic liquid used in C(sp3)-H bond functionalization and Friedlander synthesis reactions can be recycled and reused five times without significant decrease in activity.

Here is a brief introduction to this compound(20028-53-9)Reference of 2-Amino-5-chlorobenzaldehyde, if you want to know about other compounds related to this compound(20028-53-9), you can read my other articles.

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Nammalwar, Baskar; Murie, Maeghan; Fortenberry, Chelsea; Bunce, Richard A. published an article about the compound: 2-Amino-5-chlorobenzaldehyde( cas:20028-53-9,SMILESS:NC1=CC=C(Cl)C=C1C=O ).Product Details of 20028-53-9. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:20028-53-9) through the article.

One-step syntheses of 2-alkyl- and 2,4-dialkyl-substituted quinoline-3-carboxylic acids and 1,8-naphthyridine-3-carboxylic acids were reported using a catalyst-free Friedlaender reaction. The reaction is carried out in one step by simple heating of 2-aminobenzaldehyde, 2-amino-5-chlorobenzaldehyde, 2-aminonicotinaldehyde, or 2-aminoacetophenone with a β-keto ester in toluene or xylene for 24 h. Under these conditions, the carboxylic acid product is isolated directly from the reaction mixture without need for further purification The observation that the reaction starts slowly and accelerates as it proceeds suggests that the transformation is self-catalyzed. This hypothesis is also supported by the finding that attempts to extend the current reaction to diketones, which cannot hydrolyze to an acid, were generally unsuccessful.

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Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 20028-53-9, is researched, Molecular C7H6ClNO, about Highly Diastereoselective Synthesis of Homoallylic Alcohols Bearing Adjacent Quaternary Centers Using Substituted Allylic Zinc Reagents, the main research direction is alc homoallylic stereoselective synthesis; allylic organozinc preparation stereoselective addition ketone aldehyde.HPLC of Formula: 20028-53-9.

Staring from readily available polysubstituted allylic chlorides, a range of polysubstituted allylic zinc chlorides were obtained using a LiCl-mediated zinc dust insertion in 55-84% yields. A highly diastereoselective synthesis of homoallylic alcs. bearing up to two adjacent quaternary centers was achieved using these polysubstituted allylic zinc reagents.

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SDS of cas: 20028-53-9. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 2-Amino-5-chlorobenzaldehyde, is researched, Molecular C7H6ClNO, CAS is 20028-53-9, about Amino-grafted mesoporous materials based on MCF structure involved in the quinoline synthesis. Mechanistic insights. Author is Smuszkiewicz, A.; Lopez-Sanz, J.; Perez-Mayoral, E.; Soriano, E.; Sobczak, I.; Ziolek, M.; Martin-Aranda, R. M.; Lopez-Peinado, A. J..

We report here a new series of ordered mesoporous metallosilicates which have been found to be efficient heterogeneous catalysts for the Friedlaender condensation. 3-Aminopropyl-trimethoxysilane (APMS) and [3-(2-aminoethylamino)propyl] trimethoxysilane (2APMS) have been supported by grafting on a Mesoporous Cellular Foam (MCF). For comparison, both APMS and 2APMS have also been supported on an Nb-containing Mesoporous Cellular Foam (NbMCF). These hybrid materials have been tested in the reaction between 2-amino-5-chlorobenzaldehyde and Et acetoacetate leading to Et 6-chloro-2-methylquinoline-3-carboxylate with total selectivity. The condensation was more efficient when using 2APMS/MCF sample which exhibits higher nitrogen content than APMS/MCF. However, this trend was inverted when using the niobiosilicates analogs, most likely as a consequence of the interaction of amine groups with the niobium atoms in the siliceous framework. Exptl. and theor. studies demonstrated that the presence of water in non-activated samples plays an important role in the formation of the corresponding quinoline by stabilizing key transition structures and intermediate species.

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The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 2-Amino-5-chlorobenzaldehyde(SMILESS: NC1=CC=C(Cl)C=C1C=O,cas:20028-53-9) is researched.Formula: C5H5ClN2. The article 《Biocatalytic synthesis of quinoline derivatives via α-amylase catalysed one-pot domino aza-Michael/Aldol/aromatization reactions》 in relation to this compound, is published in Tetrahedron Letters. Let’s take a look at the latest research on this compound (cas:20028-53-9).

Herein, α-amylase catalyzed synthesis of substituted quinolines via one-pot domino aza-Michael/Aldol/aromatization reactions was reported. Moreover, the α-amylase enzyme from Aspergillus oryzae was found to catalyze the cascade reaction of various 2-aminobenzaldehydes with α, β-unsaturated carbonyls in high catalytic efficiency (56-86% yield).

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Tetrahydrofuran – Wikipedia,
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