Category: 53562-86-0

Formula: C5H10O3. 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: (S)-Methyl 3-hydroxybutanoate, is researched, Molecular C5H10O3, CAS is 53562-86-0, about A kinetic study and application of a novel carbonyl reductase isolated from Rhodococcus erythropolis. Author is Zelinski, Thomas; Kula, Maria-Regina.

The newly described carbonyl reductase from Rhodococcus erythropolis (RECR) accepts a broad range of substrates. Based on the kinetic constants of a variety of Me and Et ketones a hypothetical model of the substrate-binding site is proposed. Whether a substrate of interest may be reduced by the RECR can be predicted from this model together with the kinetic data. A study of initial velocities and product inhibition is presented, which shows that the kinetics of the RECR follow a Theorell-Chance mechanism. The pro-R hydride of NADH is transferred by the enzyme to the re face of the carbonyl compounds yielding (S)-alcs. The reduction of Me 3-oxobutanoate and Et 4-chloro-3-oxobutanoate catalyzed by the oxidoreductase lead to the corresponding hydroxy compounds with high enantiomeric purity [enantiomeric excess (e.e.) ≥99%]. The synthesis of Et (2R,3S)-3-hydroxy-2-methylbutanoate was accomplished with high diastereoselectivity (diastereomeric excess = 95%) and enantioselectivity (e.e. ≥95%).

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Application In Synthesis of (S)-Methyl 3-hydroxybutanoate. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: (S)-Methyl 3-hydroxybutanoate, is researched, Molecular C5H10O3, CAS is 53562-86-0, about Durability enhancement of chirally modified metallic nickel catalysts for enantioselective hydrogenation. Author is Osawa, Tsutomu; Kizawa, Tomoko; Lee, I-Yin Sandy; Ikeda, Shinji; Kitamura, Takayuki; Inoue, Yoshihisa; Borovkov, Victor.

Metallic Ni catalysts co-modified with (R,R)-tartaric acid and NaBr showed high enantioselectivity and durability upon hydrogenation of Me acetoacetate to give Me 3-hydroxybutyrate. The chirally modified catalyst prepared from 3-μm Ni powder was highly robust to maintain the hydrogenation activity and enantiodifferentiating ability for ca. 3 mo under dry condition, which enables long-term storage and hence facilitates com. distribution and industrial application.

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Safety of (S)-Methyl 3-hydroxybutanoate. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: (S)-Methyl 3-hydroxybutanoate, is researched, Molecular C5H10O3, CAS is 53562-86-0, about Rhizopus arrhizus mediated asymmetric reduction of alkyl 3-oxobutanoates. Author is Salvi, Neeta A.; Chattopadhyay, Subrata.

Alkyl 3-oxobutanoates MeCOCH2CO2R (R = Me, Et, H2C:CHCH2, Me2CHCH2, Me3C) were reduced enantioselectively to the corresponding (S)-alcs. MeCH(OH)CH2CO2R by the fungus Rhizopus arrhizus and other Rhizopus sp. The best result obtained was with t-Bu 3-oxobutanoate, which was reduced by R. arrhizus with 99% enantiomeric excess and in 68% isolated yield.

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Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

Recommanded Product: 53562-86-0. 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: (S)-Methyl 3-hydroxybutanoate, is researched, Molecular C5H10O3, CAS is 53562-86-0, about Catalytic behavior of silica-supported chitosan-platinum-iron complex for asymmetric hydrogenation of ketones.

Silica-supported chitosan-platinum-iron complex (SiO2-CS-Pt-Fe) is prepared by a simple method from silica, chitosan, H2PtCl6 · 6H2O and FeCl3. It has been found to be an effective chiral catalyst for the asym. hydrogenation of 2-hexanone to give (S)-(+)-2-hexanol and Me acetoacetate to give methyl-(S)-(+)-3-hydroxybutyrate in 85.4 and 75.0% optical yields, resp., if a proper content of Pt and Fe in SiO2-CS-Pt-Fe complex and appropriate reaction conditions are selected at room temperature and under 1 atm H2. The catalyst could be reused several times without any remarkable change in optical catalytic activity.

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Reference:
Piperazine – Wikipedia,
Piperazines – 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: 53562-86-0, is researched, SMILESS is C[C@H](O)CC(OC)=O, Molecular C5H10O3Journal, Tetrahedron: Asymmetry called Baker’s yeast catalyzed asymmetric reduction in glycerol, Author is Wolfson, Adi; Dlugy, Christina; Tavor, Dorith; Blumenfeld, Janine; Shotland, Yoram, the main research direction is prochiral ketone reduction baker’s yeast glycerol; secondary alc asym preparation; baker’s yeast asym reduction catalyst; glycerol asym reduction solvent.Product Details of 53562-86-0.

Free and immobilized baker’s yeast were successfully employed in the asym. reduction of prochiral β-keto esters and ketones in glycerol. The activities with immobilized cells were always higher then with free cells while the enantioselectivity was very high with both catalysts. Using glycerol, a non-toxic, biodegradable and recyclable liquid, as an environmentally friendly solvent allowed easy separation of the product by simple extraction with di-Et ether.

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Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

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: 53562-86-0, is researched, Molecular C5H10O3, about Stereochemical control in microbial reduction. 4. Effect of cultivation conditions on the reduction of β-keto esters by methylotrophic yeasts, the main research direction is keto ester reduction yeast methanol.Synthetic Route of C5H10O3.

A Kroekera strain and Hansenula polymorpha were grown on glucose  [50-99-7] or MeOH [67-56-1]. The cells were recovered and used to reduce β-keto Me esters. Enantiomeric excess of the D-hydroxy isomer of the hydroxy ester product was always increased by prior culture of the yeast on MeOH. It is not clear if these results are caused by induction of alc. dehydrogenase.

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Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: (S)-Methyl 3-hydroxybutanoate(SMILESS: C[C@H](O)CC(OC)=O,cas:53562-86-0) is researched.Quality Control of 2-(Thiophen-3-yl)-1,3-dioxolane. The article 《Difluorphos, an electron-poor diphosphane: A good match between electronic and steric features》 in relation to this compound, is published in Angewandte Chemie, International Edition. Let’s take a look at the latest research on this compound (cas:53562-86-0).

Both enantiomers of difluorphos I were synthesized and their stereoelectronic features were evaluated in theor. and exptl. studies. The unusual π acidity of I explains the excellent results obtained with it in ruthenium-mediated asym. hydrogenation of fluorinated β-functionalized ketones. These results are better than those obtained with other biphenyl-based diphosphines.

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Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

Recommanded Product: 53562-86-0. 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: (S)-Methyl 3-hydroxybutanoate, is researched, Molecular C5H10O3, CAS is 53562-86-0, about Catalytic behavior of silica-supported chitosan-platinum-iron complex for asymmetric hydrogenation of ketones.

Silica-supported chitosan-platinum-iron complex (SiO2-CS-Pt-Fe) is prepared by a simple method from silica, chitosan, H2PtCl6 · 6H2O and FeCl3. It has been found to be an effective chiral catalyst for the asym. hydrogenation of 2-hexanone to give (S)-(+)-2-hexanol and Me acetoacetate to give methyl-(S)-(+)-3-hydroxybutyrate in 85.4 and 75.0% optical yields, resp., if a proper content of Pt and Fe in SiO2-CS-Pt-Fe complex and appropriate reaction conditions are selected at room temperature and under 1 atm H2. The catalyst could be reused several times without any remarkable change in optical catalytic activity.

In some applications, this compound(53562-86-0)Recommanded Product: 53562-86-0 is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.

Reference:
Piperazine – Wikipedia,
Piperazines – 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: 53562-86-0, is researched, SMILESS is C[C@H](O)CC(OC)=O, Molecular C5H10O3Journal, Tetrahedron: Asymmetry called Baker’s yeast catalyzed asymmetric reduction in glycerol, Author is Wolfson, Adi; Dlugy, Christina; Tavor, Dorith; Blumenfeld, Janine; Shotland, Yoram, the main research direction is prochiral ketone reduction baker’s yeast glycerol; secondary alc asym preparation; baker’s yeast asym reduction catalyst; glycerol asym reduction solvent.Product Details of 53562-86-0.

Free and immobilized baker’s yeast were successfully employed in the asym. reduction of prochiral β-keto esters and ketones in glycerol. The activities with immobilized cells were always higher then with free cells while the enantioselectivity was very high with both catalysts. Using glycerol, a non-toxic, biodegradable and recyclable liquid, as an environmentally friendly solvent allowed easy separation of the product by simple extraction with di-Et ether.

In some applications, this compound(53562-86-0)Product Details of 53562-86-0 is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.

Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

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: 53562-86-0, is researched, Molecular C5H10O3, about Stereochemical control in microbial reduction. 4. Effect of cultivation conditions on the reduction of β-keto esters by methylotrophic yeasts, the main research direction is keto ester reduction yeast methanol.Synthetic Route of C5H10O3.

A Kroekera strain and Hansenula polymorpha were grown on glucose  [50-99-7] or MeOH [67-56-1]. The cells were recovered and used to reduce β-keto Me esters. Enantiomeric excess of the D-hydroxy isomer of the hydroxy ester product was always increased by prior culture of the yeast on MeOH. It is not clear if these results are caused by induction of alc. dehydrogenase.

In some applications, this compound(53562-86-0)Synthetic Route of C5H10O3 is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.

Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics