Category: 10472-24-9

Owolabi, Isiaka Alade; Chennapuram, Madhu; Seki, Chigusa; Okuyama, Yuko; Kwon, Eunsang; Uwai, Koji; Tokiwa, Michio; Takeshita, Mitsuhiro; Nakano, Hiroto published an article in 2019, the title of the article was Amino Amide Organocatalysts for Asymmetric Michael Addition of β-Keto Esters with β-Nitroolefins.Recommanded Product: Methyl 2-cyclopentanonecarboxylate And the article contains the following content:

Asym. Michael addition of β-keto esters with trans-β-nitroolefins using chiral amino amide organocatalyst was tried and afforded synthetically useful chiral Michael adducts in both excellent chem. yields (up to 99%) and stereoselectivities (up to dr. 99:1, up to 98% ee). The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Recommanded Product: Methyl 2-cyclopentanonecarboxylate

The Article related to nitroolefin keto ester enantioselective michael addition amino amide organocatalyst, General Organic Chemistry: Synthetic Methods and other aspects.Recommanded Product: Methyl 2-cyclopentanonecarboxylate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On January 14, 2022, Hu, Jingcheng; Zeng, Li; Hu, Jiayu; Ma, Rui; Liu, Xue; Jiao, Ying; He, Haoyu; Chen, Siyu; Xu, Zhexi; Wang, Hongfei; Lei, Aiwen published an article.Reference of Methyl 2-cyclopentanonecarboxylate The title of the article was Electrochemical Difunctionalization of Terminal Alkynes: Access to 1,4-Dicarbonyl Compounds. And the article contained the following:

Herein, a feasible electrosynthesis method to access 1,4-dicarbonyl compounds such as I [R = Ph, 4-MeC6H4, 2-thienyl, etc.; R1 = Me, OMe, OEt, Oi-Pr; R2 = Me; R3 = Me; R2R3 = (CH2)3, (CH2)4, (CH2)5] had been developed from simple alkynes and 1,3-dicarbonyl compounds When the undivided cell was combined with the constant current mode, aryl alkynes containing numerous medicinal motifs with 1,3-dicarbonyl esters or ketones reacted smoothly. External oxidant and catalyst-free conditions conformed to the requirements of green synthesis. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Reference of Methyl 2-cyclopentanonecarboxylate

The Article related to dicarbonyl compound preparation, terminal alkyne ketoester electrochem difunctionalization, General Organic Chemistry: Synthetic Methods and other aspects.Reference of Methyl 2-cyclopentanonecarboxylate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Zhou, Bingqing; Tian, Di; An, Jinglin; Zhou, Yalan; Yan, Rui; Song, Hao; Liu, Xiao-Yu; Qin, Yong published an article in 2022, the title of the article was Co-Catalyzed C(sp3)-C(sp2) bond cleavage via hydrogen atom transfer.SDS of cas: 10472-24-9 And the article contains the following content:

The discovery of a new Co-catalyzed hydrogen atom transfer (HAT) C(sp3)-C(sp2) bond cleavage method to access ketones from alkenes was reported. This unprecedented transformation features mild reaction conditions and good functional group compatibility, and it proceeded through a key alkoxy radical formation and subsequent β-fragmentation approach. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).SDS of cas: 10472-24-9

The Article related to ketone preparation, alkene bond cleavage hydrogen atom transfer cobalt catalyst, General Organic Chemistry: Synthetic Methods and other aspects.SDS of cas: 10472-24-9

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Das, Kamal; Majumdar, Swapan published an article in 2022, the title of the article was Expedient approach for trans-esterification of β-keto esters under solvent free conditions using silica supported boric acid (SiO2-H3BO3) as a recyclable catalyst.COA of Formula: C7H10O3 And the article contains the following content:

A highly efficient trans-esterification of β-keto methyl/ethyl esters with primary, secondary, allylic, benzylic and chiral alcs. has been carried out in excellent yields under solvent-free conditions using silica supported boric acid as a heterogeneous catalyst. This sustainable protocol resulted in a remarkable enhancement in the synthetic efficiency (87-95% yield) with high purity and eliminating the use of an environmentally toxic solvent. The work up procedure is very simple and the catalyst has been successfully recovered and recycled. The present methodol. is also applicable for trans-esterification with chiral alcs. on a multi-gram scale without compromising the yield. Noteworthy features of this protocol are simple operational procedure, minimizing production of chem. waste, mild reaction conditions, easy preparation of the catalyst and its recyclability up to five cycles without any appreciable loss of catalytic activity. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).COA of Formula: C7H10O3

The Article related to beta ketoester preparation green chem, primary secondary allylic benzylic chiral alc transesterification, General Organic Chemistry: Synthetic Methods and other aspects.COA of Formula: C7H10O3

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On November 30, 2020, Abdelkawy, Mahmoud A.; Aly, El-Saied A.; El-Badawi, Mahmoud A.; Itsuno, Shinichi published an article.COA of Formula: C7H10O3 The title of the article was Chitosan-supported cinchona urea: Sustainable organocatalyst for asymmetric Michael reaction. And the article contained the following:

A novel chitosan-supported cinchona urea heterogeneous catalyst was developed for asym. reaction. The catalytic activity of the chitosan-supported organocatalyst was examined in the asym. Michael addition reaction to give chiral adducts in good yields with excellent enantioselectivities (up to 99% ee). The insolubility of the chitosan-supported cinchona urea catalyst facilitated catalyst recovery. The catalyst was easily separated and reused without any loss in catalytic activity. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).COA of Formula: C7H10O3

The Article related to ketoester nitroolefin enantioselective michael reaction, chitosan cinchona urea organocatalyst preparation, General Organic Chemistry: Synthetic Methods and other aspects.COA of Formula: C7H10O3

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On June 12, 2020, Chhanda, Sadia Afrin; Itsuno, Shinichi published an article.HPLC of Formula: 10472-24-9 The title of the article was Design and synthesis of cinchona-based chiral hyperbranched polymers and their application in asymmetric reactions. And the article contained the following:

Cinchona-based chiral hyperbranched polymers (HBPs) were designed and successfully synthesized via the Mizoroki-Heck (MH) coupling reaction. AB2 and A2B-type chiral monomers were prepared from cinchona squaramide derivatives, where A (vinyl) reacted only with B (iodophenyl) under MH reaction conditions. The chiral HBPs obtained by the MH polymerization contained cinchona squaramide moieties and demonstrated excellent diastereoselectivity and enantioselectivity in asym. Michael addition reactions of Me 2-oxocyclopentanecarboxylate and trans-β-nitrostyrene. These newly designed HBPs were structurally robust and could be reused for further reaction without losing their catalytic activity. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).HPLC of Formula: 10472-24-9

The Article related to cinchona chiral hyperbranched polymer catalyst preparation diastereoselectivity enantioselectivity addition, General Organic Chemistry: Synthetic Methods and other aspects.HPLC of Formula: 10472-24-9

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On March 16, 2022, Zhang, Liang; Liu, Shuhua; Lin, Yunliang; Wang, Yuliang published an article.Product Details of 10472-24-9 The title of the article was Hydroxymethylation of active methenyl compounds: DMSO as methylene source and H2O as oxygen source. And the article contained the following:

A mild and efficient method for hydroxymethylation of active methenyl compounds was described. In this transformation, the widely available solvents DMSO and water served as methylene and oxygen sources, resp. Under promotion of activator and base, the reaction could be used for the construction of a series of α-hydroxymethylated carbonyl compounds R1COC(CH2OH)R2R3 [R1 = Me, Ph, Bn, 2-furyl, 2-thienyl; R2 = CN, MeCO, MeO2C, EtO2C, t-BuO2C, PhNHCO; R3 = Me, Et, Bn, etc.; R1R3 = (CH2)3, H2COCH2, (CH2)4, etc.] with all-carbon quaternary carbon center in good to excellent yield. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Product Details of 10472-24-9

The Article related to alpha hydroxymethylated carbonyl compound enantioselective preparation, dicarbonyl compound hydroxymethylation, General Organic Chemistry: Synthetic Methods and other aspects.Product Details of 10472-24-9

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On January 17, 2020, Hsu, Day-Shin; Liang, Suz-Ping published an article.Category: esters-buliding-blocks The title of the article was NHC-Mediated Synthesis of Tricyclic Spirocarbocycles via an Intramolecular Stetter Reaction of Cyclic Enal-Enones. And the article contained the following:

A general and efficient method for the synthesis of tricyclic spirocarbocycles is described. Various cyclic enal-enones were reacted with an N-heterocyclic carbene and an intramol. Stetter reaction proceeded smoothly to give various tricyclic spiro-1,4-diketones in 31-72% yields. The ring size of the spiro compounds can be easily controlled using different cyclic enals and enones, or by altering the length of the carbon tether. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Category: esters-buliding-blocks

The Article related to tricyclic spirocarbocycle preparation, cyclic enal enone intramol stetter reaction nitrogen heterocyclic carbene, General Organic Chemistry: Synthetic Methods and other aspects.Category: esters-buliding-blocks

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On January 3, 2020, Jao, Tsung-Jung; Akula, Pavan Sudheer; Hong, Bor-Cherng; Lee, Gene-Hsiang published an article.Quality Control of Methyl 2-cyclopentanonecarboxylate The title of the article was Catalytic 1,2-Rearrangements: Organocatalyzed Michael/Semi-Pinacol-like Rearrangement Cascade of 1,3-Diones and Nitroolefins. And the article contained the following:

New types of organocatalytic 1,2-rearrangements, which resemble the Smiles-like or semi-pinacol-like rearrangement, of Michael adducts of 1,3-dicarbonyl-2-alkyl compounds and nitroalkenes have been realized. Unlike the well-known conjugate addition, the reaction affords the 1-phenyl-1-nitroalkanes via unprecedented rearrangement and cascade reactions. Structures of the appropriate products were unambiguously characterized by X-ray crystallog. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Quality Control of Methyl 2-cyclopentanonecarboxylate

The Article related to phenylnitroalkane preparation, dicarbonylalkyl compound nitroalkene michael semipinacol rearrangement cascade organocatalyst, General Organic Chemistry: Synthetic Methods and other aspects.Quality Control of Methyl 2-cyclopentanonecarboxylate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On June 22, 2022, Jia, Zongbin; Zhang, Long; Luo, Sanzhong published an article.Name: Methyl 2-cyclopentanonecarboxylate The title of the article was Asymmetric C-H Dehydrogenative Allylic Alkylation by Ternary Photoredox-Cobalt-Chiral Primary Amine Catalysis under Visible Light. And the article contained the following:

Herein, an asym. C-H dehydrogenative allylic alkylation by a synergistic catalytic system involving a chiral primary amine, a photoredox catalyst and a cobaloxime cocatalyst was reported. The ternary catalytic system enabled the coupling of β-ketocarbonyls and olefins to afford oxo(allyl)carboxylates with good yields and high enantioselectivities. Mechanism studies disclosed a cooperative radical addition process with a chiral α-imino radical and Co(II)-metalloradical wherein the chiral primary aminocatalyst and the cobaloxime catalyst work in concert to control the stereoinduction. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Name: Methyl 2-cyclopentanonecarboxylate

The Article related to oxo allyl carboxylate preparation enantioselective, ketocarbonyl alkene dehydrogenative allylic alkylation cobalt photocatalyst, General Organic Chemistry: Synthetic Methods and other aspects.Name: Methyl 2-cyclopentanonecarboxylate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics