Category: 10472-24-9

On March 19, 2021, Zhou, Zheng-Xin; Li, Jia-Wei; Wang, Liang-Neng; Li, Ming; Liu, Yue-Jin; Zeng, Ming-Hua published an article.SDS of cas: 10472-24-9 The title of the article was Cooperative Ligand-Promoted P(III)-Directed Ruthenium-Catalyzed Remote Meta-C-H Alkylation of Tertiary Phosphines. And the article contained the following:

Herein, the authors disclose a Ru-catalyzed meta-selective C-H activation of phosphines by using intrinsic P(III) as a directing group. 2,2,6,6-Tetramethylheptane-3,5-dione acts as the ligand and exhibits an excellent performance in boosting the meta-alkylation. The protocol allows an efficient and straightforward synthesis of meta-alkylated tertiary phosphines. Several meta-alkylated phosphines were evaluated for Pd-catalyzed Suzuki coupling and are superior to com. available ortho-substituted phosphines. The practicability of this methodol. is further demonstrated by the synthesis of difunctionalized phosphines. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).SDS of cas: 10472-24-9

The Article related to phosphorus directed ruthenium catalyzed alkylation tertiary biarylphosphine alkyl bromide, alkylated biarylphosphine preparation, Organometallic and Organometalloidal Compounds: Phosphorus Compounds and other aspects.SDS of cas: 10472-24-9

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

On August 10, 2020, Li, Longji; Li, Yao; Fu, Niankai; Zhang, Long; Luo, Sanzhong published an article.Formula: C7H10O3 The title of the article was Catalytic Asymmetric Electrochemical α-Arylation of Cyclic β-Ketocarbonyls with Anodic Benzyne Intermediates. And the article contained the following:

Asym. catalysis with benzyne remains elusive because of the highly fleeting and nonpolar nature of benzyne intermediates. Reported herein is an electrochem. approach for the oxidative generation of benzynes (cyclohexyne) and its successful merging with chiral primary aminocatalysis, formulating the first catalytic asym. enamine-benzyne (cyclohexyne) coupling reaction. Cobalt acetate was identified to stabilize the in situ generated arynes and facilitate its coupling with an enamine. This catalytic enamine-benzyne protocol provides a concise method for the construction of diverse α-aryl (α-cyclohexenyl) quaternary carbon stereogenic centers with good stereoselectivities. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Formula: C7H10O3

The Article related to asym electrochem arylation cyclic ketocarbonyl anodic benzyne primary aminocatalysis, arylation, arynes, asymmetric catalysis, electrochemistry, synthetic methods, Benzene, Its Derivatives, and Condensed Benzenoid Compounds: General and other aspects.Formula: C7H10O3

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

Shim, Jae Ho; Hong, Yeonsun; Kim, Ji Hae; Kim, Hyeon Soo; Ha, Deok-Chan published an article in 2021, the title of the article was Organocatalytic Asymmetric Michael Addition in Aqueous Media by a Hydrogen-Bonding Catalyst and Application for Inhibitors of GABAB Receptor.Product Details of 10472-24-9 And the article contains the following content:

Catalysts based on (R, R)-1,2-diphenylethylenediamine are, as chiral organic catalysts, applied to the asym. Michael addition to α, β-unsaturated nitroalkenes under neutral conditions. The role of an aqueous medium for organic catalytic activity can be reversed concerning hydrophilic-hydrophobic function depending on the reaction conditions. In this study, to provide an environmentally friendly system, the thiourea-based catalyst substituted with 3,5-(CF3)2-Ph was used in water solvents. The hydrophobic effect of the substituent provided fast reaction, high chem. yield, and mirror-image selectivity. This reaction allowed the preparation of GABAB agonists in an optically pure manner. Addnl., GABA (γ-aminobutyric acid) analogs such as baclofen and phenibut were synthesized as R-type S-type with high optical purity. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Product Details of 10472-24-9

The Article related to organocatalytic asym michael addition hydrogen bonding catalyst gabab receptor, Pharmacology: Other (All Agents and Effects Not Otherwise Assignable) and other aspects.Product Details of 10472-24-9

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

Togashi, Rei; 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 2-Azanorbornane-Based Amino Alcohol Organocatalysts for Asymmetric Michael Reaction of β-Keto Esters with Nitroolefins.HPLC of Formula: 10472-24-9 And the article contains the following content:

New optically active 2-azanorbornane-based amino alc. organocatalysts were designed and synthesized, and these catalysts were successfully employed in the asym. Michael reaction of β-keto esters with nitroolefins to obtain the corresponding chiral Michael adducts with both high chem. yields (up to 99 %) and high stereoselectivities (up to dr = 91:9, up to 91 % ee). The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).HPLC of Formula: 10472-24-9

The Article related to azanorbornane amino alc organocatalyst preparation asym michael ketoester nitroolefin, Alicyclic Compounds: Cyclopentanes, Including Fulvenes and Fulvalenes and other aspects.HPLC of Formula: 10472-24-9

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

Begum, Zubeda; Sannabe, Haruka; Seki, Chigusa; Okuyama, Yuko; Kwon, Eunsang; Uwai, Koji; Tokiwa, Michio; Tokiwa, Suguru; Takeshita, Mitsuhiro; Nakano, Hiroto published an article in 2021, the title of the article was Simple primary β-amino alcohols as organocatalysts for the asymmetric Michael addition of β-keto esters to nitroalkenes.Reference of Methyl 2-cyclopentanonecarboxylate And the article contains the following content:

Simple primary β-amino alcs. acted as an efficient organocatalysts in the asym. Michael addition of β-keto esters with nitroalkenes which afforded highly pure chiral Michael adducts. Also, both enantiomers of the adducts were obtained, depending on the specific catalyst used and reaction temperature The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Reference of Methyl 2-cyclopentanonecarboxylate

The Article related to keto ester nitroalkene amino alc catalyst enantioselective diastereoselective michael, nitroalkanyl keto ester preparation, Alicyclic Compounds: Cyclopentanes, Including Fulvenes and Fulvalenes and other aspects.Reference of Methyl 2-cyclopentanonecarboxylate

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

On April 16, 2020, Wong, Jonathan; Ke, Zhihai; Yeung, Ying-Yeung published an article.HPLC of Formula: 10472-24-9 The title of the article was Lipophilic indole mediated chemoselective α-monobromination of 1,3-dicarbonyl compounds. And the article contained the following:

A mild and efficient mono-selective bromination of 1,3-dicarbonyl compounds was developed using lipophilic indole catalysts. Inexpensive and com. available N-bromosuccinimide (NBS) was used as the brominating reagent. The selectivity was further enhanced when using stoichiometric amount of 3-bromoindole species. Mechanistic studies revealed that the indole catalyst has dual functions in the mono-bromination process. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).HPLC of Formula: 10472-24-9

The Article related to diketone bromosuccinamide indole catalyst chemoselective bromination, bromo diketone preparation, Aliphatic Compounds: Ketones and Derivatives, Including Sulfur Analogs and other aspects.HPLC of Formula: 10472-24-9

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

Yuan, Yang; Guo, Zixia; Mu, Yuanyang; Wang, Ye; Xu, Murong; Li, Yanzhong published an article in 2020, the title of the article was Synthesis of Spiro[5.n (n = 6-8)]heterocycles through Successive Ring-Expansion/Indole C-2 Functionalization.Formula: C7H10O3 And the article contains the following content:

A cascade procedure for the efficient and atom-economical synthesis of spiro[5.n (n = 6-8)]heterocycles I (R = H, OMe, Me, Br, Cl; R1 = 3-Me, 5-OMe, 6-Br, etc.; R2 = Ph, 4-MeOC6H4, naphthalen-2-yl, etc.; R3 = CO2Et, CO2Me, COMe, CN; X = (CH2)n; n = 1,2,3) including Et 5′,7-dioxo-2-phenyl-5’H-spiro[cycloheptane-1,4′-pyrrolo[1,2-a]quinolin]-2-ene-3-carboxylate from ketones II and indoles III has been developed. This process goes through the tandem reactions of base-promoted ring-expansion of cyclic ketones followed by Cu-catalyzed intramol. C-2 spirocyclization of indoles. Easily accessible starting materials and broad substrate scope are the advantaged features of this protocol. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Formula: C7H10O3

The Article related to indoloquinoline dioxo spirocyclic carboxylate preparation green chem, indole cyclic ketone spirocyclization copper catalyst, Heterocyclic Compounds (One Hetero Atom): Quinolines and Isoquinolines and other aspects.Formula: C7H10O3

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

Suzuki, Koki; Tsuji, Hiroaki; Kawatsura, Motoi published an article in 2020, the title of the article was Ruthenium-catalyzed benzylic substitution of benzyl esters with stabilized carbon nucleophiles.Quality Control of Methyl 2-cyclopentanonecarboxylate And the article contains the following content:

A [Cp*RuCl2]2/picolinic acid catalyst system promoted the reaction of 2-naphthylmethyl-2,3,4,5,6-pentafluorobenzoates with a series of stabilized carbon nucleophiles such as malonates, β-ketoesters, and diketones to give the corresponding benzylic alkylation products in moderate to high yields. A plausible reaction mechanism that could involve a (π-benzyl)ruthenium intermediate is proposed. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Quality Control of Methyl 2-cyclopentanonecarboxylate

The Article related to arylalkyl ester preparation ruthenium catalyst, benzyl ester carbon nucleophile alkylation, Benzene, Its Derivatives, and Condensed Benzenoid Compounds: Naphthalenes and other aspects.Quality Control of Methyl 2-cyclopentanonecarboxylate

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

Zhang, Qi; Chiou, Mong-Feng; Ye, Changqing; Yuan, Xiaobin; Li, Yajun; Bao, Hongli published an article in 2022, the title of the article was Radical 1,2,3-tricarbofunctionalization of α-vinyl-β-ketoesters enabled by a carbon shift from an all-carbon quaternary center.Quality Control of Methyl 2-cyclopentanonecarboxylate And the article contains the following content:

An intermol., radical 1,2,3-tricarbofunctionalization of α-vinyl-β-ketoesters I (R = Me, Et, Bn; R1 = H, OMe; R2 = H, Me, OMe; R3 = H, F, OMe; R4 = H, Cl, Ph, etc.; R5 = R6 = H, Me) and Et 1-ethenyl-2-oxocyclohexane-1-carboxylate, Et 1-ethenyl-2-oxocycloheptane-1-carboxylate to achieve the goal of building mol. complexity via the one-pot multifunctionalization of alkenes R7CCS(O)2R8 (R7 = Ph, 4-chlorophenyl, thiophen-3-yl, etc.; R8 = CF3, C4F9) have been reported. This reaction allows the expansion of the carbon ring by a carbon shift from an all-carbon quaternary center, and enables further C-C bond formation on the tertiary carbon intermediate with the aim of reconstructing a new all-carbon quaternary center. The good functional group compatibility ensures diverse synthetic transformations of this method. Exptl. and theor. studies reveal that the excellent diastereoselectivity should be attributed to the hydrogen bonding between the substrates and solvent. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Quality Control of Methyl 2-cyclopentanonecarboxylate

The Article related to tetrahydronaphthalenone preparation diastereoselective dft, vinylketoester alkene intermol radical tricarbofunctionalization, Benzene, Its Derivatives, and Condensed Benzenoid Compounds: Naphthalenes and other aspects.Quality Control of Methyl 2-cyclopentanonecarboxylate

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

Tavana, Jalal; Faysal, Atik; Vithanage, Anushka; Gramlich, William M.; Schwartz, Thomas J. published an article in 2022, the title of the article was Pathway to fully-renewable biobased polyesters derived from HMF and phenols.Category: esters-buliding-blocks And the article contains the following content:

Building on previous work where 5-hydroxymethylfurfural (HMF) was selectively functionalized by etherification with phenols, we demonstrated that the oxidized versions of these HMF ethers can be converted to functionalized δ-hexalactones (FDHLs) that can subsequently undergo ring-opening polymerization (ROP) to form polyesters. The key step in FDHL production is Ru-catalyzed selective hydrogenolysis of the C-O bond of functionalized-2-furan carboxylic acids (FFCAs). We found that the combination of a TiO2 support and a polar, aprotic solvent leads to high selectivity toward the lactone product. Under the optimized conditions, we achieved a 60% yield of FDHL at 150°C with 1.5% Ru/TiO2 in 1,4-dioxane using 5-phenoxy-2-furan carboxylic acid as a model reactant. ROP of six-membered lactone monomers bearing either a methoxy (MDHL) or a phenolic (PDHL) pendant group resulted in polymers ranging from 5 to 30 kg mol-1 with narrow dispersity. The polymerizations were carried out at room temperature using di-Ph phosphate (DPP) and triazabicyclodecene (TBD) as organocatalysts. Typical equilibrium polymerization behavior was observed at room temperature, and the reaction was observed to be pseudo-first order with respect to monomer concentration in solution Poly(PDHL) had a significantly higher glass transition temperature (6°C) than unsubstituted poly(valerolactone) due to the presence of the bulky phenolic group off the polymer backbone. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Category: esters-buliding-blocks

The Article related to hmf phenol renewable biobased polyester preparation rop catalyst, Chemistry of Synthetic High Polymers: Ring-Opening and Other Polymerizations and other aspects.Category: esters-buliding-blocks

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