Category: 4144-22-3

SDS of cas: 4144-22-3. 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: 1-(tert-Butyl)-1H-pyrrole-2,5-dione, is researched, Molecular C8H11NO2, CAS is 4144-22-3, about Ruthenium(II)-catalyzed redox-free [3 + 2] cycloaddition of N-sulfonyl aromatic aldimines with maleimides. Author is Tamizmani, Masilamani; Ramesh, Balu; Jeganmohan, Masilamani.

A ruthenium(II)-catalyzed redox-free cycloaddition of N-sulfonyl aromatic aldimines with maleimides providing 1-aminoindanes, e. g., I, in good yields is described. The proposed mechanism was strongly supported by the DFT calculations and isolation of a ruthenacycle intermediate.

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Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Synthetic Route of C8H11NO2. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 1-(tert-Butyl)-1H-pyrrole-2,5-dione, is researched, Molecular C8H11NO2, CAS is 4144-22-3, about Structural Studies on α-Pyrone Cycloadducts. Manifestation of the Early Stages of CO2 Extrusion by retro Hetero-Diels-Alder Reaction. Author is Roth-Barton, Jesse; Goh, Yit Wooi; Karnezis, Asimo; White, Jonathan M..

Structures of the α-pyrone (pyran-2-one) cycloadducts 4-8 show deviations of some bond distances from their normal values, consistent with manifestation of the early stages of the retro hetero-Diels-Alder decarboxylation reaction in the ground state structures. Thus the bridgehead C-O(CO) and C-CO(O) bonds are lengthened and the bridging C-O bond is shortened. The degree of lengthening of the C-O(CO) and C-CO(O) bonds is similar, whereas in the calculated transition state structure there is significant asymmetry in the extent of C-CO(O) and C-O(CO) bond breaking.

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Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 1-(tert-Butyl)-1H-pyrrole-2,5-dione( cas:4144-22-3 ) is researched.Product Details of 4144-22-3.Matsumoto, Akikazu; Kubota, Toru; Otsu, Takayuki published the article 《Synthesis and characterization of poly(N-tert-alkylmaleimides). 1. Radical polymerization of N-tert-butylmaleimide leading to a less-flexible poly(substituted methylene)》 about this compound( cas:4144-22-3 ) in Polymer Bulletin (Berlin, Germany). Keywords: butylmaleimide polymerization kinetics; polybutylmaleimide flexibility polymerization reactivity. Let’s learn more about this compound (cas:4144-22-3).

In presence of AIBN, N-tert-butylmaleimide (I) readily polymerized in spite of the bulky N-substituent to give a high-mol.-weight, semiflexible polymer. The rate of polymerization (Rp) in C6H6 was given by Rp = k[AIBN]0.51[I]1.4, and the overall activation energy was 99.6 kJ/mol. The polymerization of I to high mol. weight was assumed to result from a decrease in the rate of bimol. termination between rigid polymer radicals bearing bulky substituents. The flexibility of the polymer chain was examined by viscometric and light scattering methods, and the flexibility effect on the polymerization reactivity was discussed.

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Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 1-(tert-Butyl)-1H-pyrrole-2,5-dione( cas:4144-22-3 ) is researched.Computed Properties of C8H11NO2.Sakai, Norio; Matsumoto, Shun; Ogiwara, Yohei published the article 《Cobalt-catalyzed oxidative annulation of aromatic tertiary amines with electron-deficient maleimides leading to tetrahydroquinoline derivatives》 about this compound( cas:4144-22-3 ) in Tetrahedron Letters. Keywords: tetrahydroquinoline preparation; tertiary amine maleimide oxidative annulation cobalt catalyst. Let’s learn more about this compound (cas:4144-22-3).

A CoCl2-TBHP (t-Bu hydroperoxide) system that efficiently catalyzes the oxidative annulation of aromatic tertiary amines such as N-phenylpiperidine, N,N-dimethyl-p-toluidine, N-methyl-N-ethylaniline, etc. with a typical electron-deficient alkene, N-substituted maleimides I (R = Ph, benzyl, t-Bu, 4-chlorophenyl, 4-methylphenyl), producing the corresponding polycyclic tetrahydroquinoline derivatives, e.g., II, has been described. This oxidizing system could also be applied to the annulation of an electron-rich alkene.

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Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Li, Feng; Zhou, Yirong; Yang, Heng; Liu, Dandan; Sun, Bing; Zhang, Fang-Lin published the article 《Assembly of Diverse Spirocyclic Pyrrolidines via Transient Directing Group Enabled Ortho-C(sp2)-H Alkylation of Benzaldehydes》. Keywords: formylaryl succinimide regioselective diversity oriented preparation; spirocyclic imide preparation; ruthenium catalyst transiently directed regioselective alkylation aryl aldehyde maleimide; spirocyclization formylaryl succinimide.They researched the compound: 1-(tert-Butyl)-1H-pyrrole-2,5-dione( cas:4144-22-3 ).Recommanded Product: 4144-22-3. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:4144-22-3) here.

In the presence of [RuCl2(p-cymene)]2, AgSbF6, and 4-chlorobenzoic acid, aryl aldehydes such as 2,4-dimethylbenzaldehyde underwent directed regioselective alkylation reactions with maleimides such as N-ethylmaleimide via formation of transient imine directing groups with 2-methyl-3-trifluoromethylaniline to yield formylarylsuccinimides such as I chemo- and regioselectively. Alkylation by maleimides proximal to the aldehyde is preferred over alkylation near other directing groups such as carbamates and pyrazoles, allowing for the synthesis of formylaryl-substituted imides. Spirocyclization of I with a variety of reactants such as 1,2,3,4-tetrahydroisoquinoline yielded nine pyrrolidine-containing spirocycles such as II. Only 0.5 mol % of ruthenium catalyst was sufficient to prepare I on 100 mmol scale (22 g scale, 86% yield) without column chromatog. purification

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Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Lv, Ningning; Liu, Yue; Xiong, Chunhua; Liu, Zhanxiang; Zhang, Yuhong published an article about the compound: 1-(tert-Butyl)-1H-pyrrole-2,5-dione( cas:4144-22-3,SMILESS:O=C(C=C1)N(C(C)(C)C)C1=O ).Formula: C8H11NO2. 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:4144-22-3) through the article.

The first example of oxidant-free cobalt-catalyzed synthesis of five-membered spirocycles, e.g. I, is reported from benzimidates and maleimides utilizing nitrobenzene as promoter. In contrast to previously known cobalt-catalyzed oxidative C-H functionalization reactions, this transformation occurs efficiently in the absence of oxidant and is accompanied by liberation of hydrogen. The spiro-lactams were readily achieved by the hydrolysis of as-prepared spirocyclic compounds The Cp*Rh(III) catalyst shows poor reactivity.

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Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 1-(tert-Butyl)-1H-pyrrole-2,5-dione(SMILESS: O=C(C=C1)N(C(C)(C)C)C1=O,cas:4144-22-3) is researched.Quality Control of Diiodo(1,5-cyclooctadiene)platinum(II). The article 《Rhodium-Catalyzed Site-Selective ortho-C-H Activation: Enone Carbonyl Directed Hydroarylation of Maleimides》 in relation to this compound, is published in Journal of Organic Chemistry. Let’s take a look at the latest research on this compound (cas:4144-22-3).

Enone carbonyl directed 1,4-addition of ortho-C-H bond in chalcones to maleimides was developed under the catalysis of Rh(III). This reaction furnished a variety of chalcone-based pharmacol. useful 3-arylated succinimide derivatives in good yields with excellent selectivity.

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Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

COA of Formula: C8H11NO2. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 1-(tert-Butyl)-1H-pyrrole-2,5-dione, is researched, Molecular C8H11NO2, CAS is 4144-22-3, about Chiral Bicyclic Guanidine-Catalyzed Enantioselective Reactions of Anthrones.

Chiral bicyclic guanidine I was found to be an excellent catalyst for reactions between anthrones and various dienophiles. The catalyst can tolerate a range of substituents and substitution patterns, making several anthrone derivatives suitable for this reaction. Both Diels-Alder and Michael adducts were obtained in excellent yields, high regioselectivities, and high enantioselectivities. This is the first case of a highly enantioselective base-catalyzed anthrone Diels-Alder reaction.

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Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

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 Enantioselective Michael addition of ketones to maleimides catalyzed by bifunctional monosulfonyl DPEN salt, published in 2010-07-07, which mentions a compound: 4144-22-3, Name is 1-(tert-Butyl)-1H-pyrrole-2,5-dione, Molecular C8H11NO2, Application In Synthesis of 1-(tert-Butyl)-1H-pyrrole-2,5-dione.

An unprecedented enantioselective Michael addition of various ketones to maleimides catalyzed by a simple bifunctional primary amine, monosulfonyl DPEN salt, is reported. The reaction provides the desired pyrrolidine diones, e.g., I in good to excellent yields (up to 99%) with excellent enantioselectivities (up to 99%).

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Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Article, Research Support, Non-U.S. Gov’t, Organic Letters called Cobalt(III)-Catalyzed [4 + 2] Annulation of N-Chlorobenzamides with Maleimides, Author is Muniraj, Nachimuthu; Prabhu, Kandikere Ramaiah, which mentions a compound: 4144-22-3, SMILESS is O=C(C=C1)N(C(C)(C)C)C1=O, Molecular C8H11NO2, Application of 4144-22-3.

A Co(III)-catalyzed novel [4 + 2] annulation of N-chlorobenzamides with maleimides has been reported. Mostly, maleimides are known to furnish the Michael-type or 1,1-type cyclized products while treating with amides. In this reaction, maleimides furnished [4 + 2] annulated products in good yields at room temperature while being treated with the internal oxidizing N-chlorobenzamide as a directing group. The developed methodol. is compatible with a variety of functional groups. The [4 + 2] annulated products obtained are featured in some biol. active mols.

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Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics