Category: 4144-22-3

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.HPLC of Formula: 4144-22-3.Bartoli, Giuseppe; Bosco, Marcella; Carlone, Armando; Cavalli, Andrea; Locatelli, Manuela; Mazzanti, Andrea; Ricci, Paolo; Sambri, Letizia; Melchiorre, Paolo published the article 《Organocatalytic asymmetric conjugate addition of 1,3-dicarbonyl compounds to maleimides》 about this compound( cas:4144-22-3 ) in Angewandte Chemie, International Edition. Keywords: conjugate addition reaction stereoselective maleimide dicarbonyl quinine catalyst. Let’s learn more about this compound (cas:4144-22-3).

The natural alkaloids quinine and quinidine serve as efficient bifunctional organocatalysts in the asym. conjugate addition of 1,3-dicarbonyl compounds to maleimides. Very high selectivity is observed in this one-step construction of highly functionalized compounds with two adjacent stereogenic centers from com. available precursors.

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

Butler, Richard N.; Coyne, Anthony G.; McArdle, Patrick; Sibley, Lisa M.; Burke, Luke A. published the article 《Uncharacteristic thione behavior in a Huisgen cycloaddition reaction: A kinetic and theoretical study》. Keywords: dipolar Huisgen cycloaddition adamantanethione phthalazinium cyanomethanide thiazolophthalazine.They researched the compound: 1-(tert-Butyl)-1H-pyrrole-2,5-dione( cas:4144-22-3 ).HPLC of Formula: 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 reaction of phthalazinium-2-dicyanomethanide with adamantanethione the rare ring system [1,3]thiazolo[2,3-a]phthalazine was obtained. An x-ray crystal structure of the product shows regioselectivity with the thione carbon bonded to the dicyanomethanide terminus of the 1,3-dipole. UV kinetic measurements and DFT calculations showed that the rate of cycloaddition of adamantanethione was significantly slower than that of DMAD and no super-dipolarophile character was exhibited. This arose from exceptional lowering of the HOMO energy of the 1,3-dipole by the cyano substituents.

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

Recommanded Product: 1-(tert-Butyl)-1H-pyrrole-2,5-dione. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 1-(tert-Butyl)-1H-pyrrole-2,5-dione, is researched, Molecular C8H11NO2, CAS is 4144-22-3, about Cascade Functionalization of C(sp3)-Br/C(sp2)-H Bonds: Access to Fused Benzo[e]isoindole-1,3,5-trione via Visible-Light-Induced Reductive Radical Relay Strategy. Author is Zhu, Jia-Nan; Wang, Wen-Kang; Zhu, Yuan; Hu, Yin-Qiu; Zhao, Sheng-Yin.

A reductive radical relay strategy for the construction of fused benzo[e]isoindole-1,3,5-trione through a reaction of α-bromo ketones with maleimides in the presence of Ir(ppy)3 under visible-light irradiation is described. The protocol employs very mild reaction conditions and offers satisfactory yields. Moreover, the reaction proceeds through a cascade C(sp3)-Br/C(sp2)-H functionalization, double C-C bond formation, and oxidative aromatization sequence.

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Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 1-(tert-Butyl)-1H-pyrrole-2,5-dione, is researched, Molecular C8H11NO2, CAS is 4144-22-3, about Cobalt-catalyzed 2-(1-methylhydrazinyl)pyridine-assisted cyclization of thiophene-2-carbohydrazides with maleimides: efficient synthesis of thiophene-fused pyridones, the main research direction is pyrrolothienopyridine preparation; carbohydrazide thiophene maleimide cycloaddition reaction cobalt catalyst.Recommanded Product: 4144-22-3.

A cobalt-catalyzed direct C-H/N-H functionalization of thiophene-2-carbohydrazides, e.g., I, with maleimides such as., 1-methyl-pyrrole-2,5-dione by utilizing 2-(1-methylhydrazinyl)pyridine (MHP) as an easily removable bidentate directing group has been developed. This formal [4+2] cycloaddition has been achieved for the first time, and it provides an alternative and versatile approach to construct thiophene-fused pyridones, e.g., II, using an inexpensive cobalt catalyst. The C-H/N-H activation cascade protocol showed a high efficiency and a broad substrate scope, and the products were obtained in good to excellent yields.

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Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

COA of Formula: C8H11NO2. 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 Thermal degradation of vinylidene chloride/vinyl chloride copolymers in the presence of N-substituted maleimides. Author is Howell, Bob A.; Zhang, Jin.

As a consequence of their excellent barrier properties vinyl chloride/vinylidene chloride copolymers have long been prominent in the flexible packaging market. While these polymers possess a number of superior characteristics, they tend to undergo thermally induced degradative dehydrochlorination at process temperatures This degradation must be controlled to permit processing of the polymers. Three series of N-substituted maleimides (N-alkyl-, N-aralkyl, and N-aryl) were synthesized, characterized spectroscopically, and evaluated as potential stabilizers for a standard vinyl chloride/vinylidene chloride (85 mass %) copolymer. As surface blends with the polymer, these compounds are ineffective as stabilizers. However, significant stabilization may be achieved by pretreatment of the polymer with N-substituted maleimides. The most effective stabilization of the polymer is afforded by N-aralkyl- or N-arylmaleimides, most notably, N-benzylmaleimide and N-p-methoxyphenylmaleimide.

From this literature《Thermal degradation of vinylidene chloride/vinyl chloride copolymers in the presence of N-substituted maleimides》,we know some information about this compound(4144-22-3)COA of Formula: C8H11NO2, but this is not all information, there are many literatures related to this compound(4144-22-3).

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

Product Details of 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 Rhodium(III)-Catalyzed Oxidative [3 + 2] Annulation of 2-Acetyl-1-arylhydrazines with Maleimides: Synthesis of Pyrrolo[3,4-b]indole-1,3-diones. Author is Li, He; Zhang, Sheng; Feng, Xiujuan; Yu, Xiaoqiang; Yamamoto, Yoshinori; Bao, Ming.

A rhodium-catalyzed oxidative [3 + 2] annulation of 2-acetyl-1-phenylhydrazines with maleimides was accomplished using AgNTf2 and Ag2CO3 as additive and oxidant, resp. A variety of 2-acetyl-1-phenylhydrazines with maleimides were converted into pyrrolo[3,4-b]indole-1,3-diones I (R1 = 7-Me, 7-OMe, 7-Ph, etc.; R2 = Me, cyclohexyl, 1-naphthyl, etc.) in satisfactory to excellent yields. Synthetically useful functional groups, such as halogen atoms (F, Cl, Br, and I), ester, cyano, and nitro, remained intact during tandem C-H activation and annulation reactions.

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Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Application of 4144-22-3. 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 Rh(III)-Catalyzed Regioselective C8-Alkylation of Quinoline N-Oxides with Maleimides and Acrylates.

A disclosed the Rh(III)-catalyzed selective C8-alkylation of quinoline N-oxides with maleimides and acrylates. The main features of the reaction include complete C8-selectivity and broad substrate scope with good to excellent yields. The reaction also proceeded well with unprotected maleimide. The applicability of the developed methodol. was demonstrated with gram-scale synthesis and post-modification of the alkylated product. Preliminary mechanistic study revealed that the reaction proceeds through a five-membered rhodacycle and involves proto-demetalation step.

From this literature《Rh(III)-Catalyzed Regioselective C8-Alkylation of Quinoline N-Oxides with Maleimides and Acrylates》,we know some information about this compound(4144-22-3)Application of 4144-22-3, but this is not all information, there are many literatures related to this compound(4144-22-3).

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

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 Propagation and termination rate constants of N-tert-alkyl- and N-trialkylsilylmaleimides in radical polymerization initiated with 2,2′-azobisisobutyronitrile, published in 1993-03-15, which mentions a compound: 4144-22-3, mainly applied to alkylsilylmaleimide radical polymerization AIBN catalyst; kinetics radical polymerization alkylsilylmaleimide AIBN, Computed Properties of C8H11NO2.

Radical polymerizations of N-tert-alkylmaleimide (tRMI) and N-trialkylsilylmaleimide (RSiMI) were investigated kinetically by means of ESR spectroscopy. By the use of the steady-state concentrations of the polymer radicals determined by ESR, the propagation and termination rate constants (kp and k1) were evaluated. k1 Was also determined by anal. of the nonsteady state. TRMI and RSiMI were revealed to have similar kp depending on the bulkiness of the N-substituents, while Kt for RSiMI were about ten times larger than those for tRMI. The relationships between kp and kt values and the structure of the N-substituents were discussed.

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

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 4144-22-3, is researched, SMILESS is O=C(C=C1)N(C(C)(C)C)C1=O, Molecular C8H11NO2Journal, Article, Research Support, Non-U.S. Gov’t, Organic Letters called Cross-Coupling of Acrylamides and Maleimides under Rhodium Catalysis: Controlled Olefin Migration, Author is Sharma, Satyasheel; Han, Sang Hoon; Oh, Yongguk; Mishra, Neeraj Kumar; Lee, Suk Hun; Oh, Joa Sub; Kim, In Su, the main research direction is acrylamide maleimide cross coupling reaction rhodium catalysis olefin migration; succinimide substituted preparation.Electric Literature of C8H11NO2.

The rhodium(III)-catalyzed direct cross-coupling reaction of electron-deficient acrylamides with maleimides is described. This protocol displays broad functional group tolerance and high efficiency, which offers a new opportunity to access highly substituted succinimides. Dependent on the substituent positions of acrylamides and reaction conditions, olefin migrated products were obtained with high regio- and stereoselectivity.

There is still a lot of research devoted to this compound(SMILES：O=C(C=C1)N(C(C)(C)C)C1=O)Electric Literature of C8H11NO2, and with the development of science, more effects of this compound(4144-22-3) can be discovered.

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

Product Details of 4144-22-3. 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 Synthesis of Fused or Spiro Polyheterocyclic Compounds via the Dehydrogenative Annulation Reactions of 2-Arylindazoles with Maleimides.

A dehydrogenative annulation of 2-arylindazoles with maleimides for the switchable synthesis of indazolo[2,3-a]pyrrolo[3,4-c]quinolinones or spiroindolo[1,2-b]indazole-11,3′-pyrrolidinones is presented. Mechanistically, the formation of the title compounds involves a Rh(III)-catalyzed C-H metalation of 2-arylindazole, followed by maleimide insertion and intramol. cyclization. Interestingly, the selectivity to form the fused or spiro compounds could be switched by resorting to different additives. The notable features of this protocol include simple substrates and excellent atom economy and regioselectivity.

If you want to learn more about this compound(1-(tert-Butyl)-1H-pyrrole-2,5-dione)Product Details of 4144-22-3, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(4144-22-3).

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