Category: 94-02-0

Gok, Dervis published the artcile< One-pot three-component synthesis of novel 2-(3-nitro-phenyl)-quinazoline-4-carboxylic acid derivatives>, Recommanded Product: Ethyl 3-oxo-3-phenylpropanoate, the main research area is quinazoline carboxylic acid preparation; nitro phenyl quinazoline carboxylic acid preparation; sodium isatinate nitrobenzaldehyde ammonium acetate three component.

A simple and easy synthesis of compound I [R1 = HO; R2 = 3-O2NC6H4] was successfully developed through a one-pot three-component condensation reaction of (2-amino-phenyl)-oxo-acetic acid sodium salt obtained from the hydrolysis of isatin with ammonium acetate and 3-nitrobenzaldehyde. Some novel quinazoline-ester derivatives I [R1 = MeO, EtO, i-PrO, BuO; R2 = 3-O2NC6H4] were then obtained by the reaction between the new compound I [R1 = H; R2 = 3-O2NC6H4] and various alcs. Then, quinazoline-amide derivatives I [R1 = H2N, n-PrNH, i-PrNH, PhNH, 4-H2NSO2C6H4NH; R2 = 3-O2NC6H4] were synthesized from the reaction of various amines and compound I [R1 = Cl; R2 = 3-O2NC6H4], obtained by the reaction of compound I [R1 = HO; R2 = 3-O2NC6H4] with SOCl2. Finally, some novel quinazoline-azo derivatives II [R3 = Me, Ph; R4 = Me, EtO] were synthesized by the coupling reaction between β-dicarbonyl compounds and the novel amino-quinazoline derivative compound I [R1 = n-PrNH; R2 = 3-H2NC6H4], obtained by reduction of nitro-quinazoline derivative compound I [R1 = n-PrNH; R2 = 3-O2NC6H4]. Thus, a new series of quinazoline-4-carboxylic acid, ester, amide and azo derivatives was synthesized and fully characterized by 1H NMR, 13C NMR, IR and mass spectrometry anal.

Journal of Heterocyclic Chemistry published new progress about Carboxylic acids Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 94-02-0 belongs to class esters-buliding-blocks, and the molecular formula is C11H12O3, Recommanded Product: Ethyl 3-oxo-3-phenylpropanoate.

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

Jiang, Qiuxia; Li, Anquan; Liu, Xiang; Yu, Yue; Zhu, Baofu; Cao, Hua published the artcile< Lewis Acid-Catalyzed Synthesis of Polysubstituted Furans from Conjugated Ene-yne-ketones and 1,3,5-Triazinanes>, SDS of cas: 94-02-0, the main research area is furan preparation green chem regioselective; conjugated ene yne ketone triazinane bond formation.

An efficient and metal-free approach to the construction of diverse functionalized furan derivatives has been developed from ene-yne-ketones and 1,3,5-triazinanes. As an atom-economical and environmentally-friendly protocol, the new conditions are suitable for selective C-N and C-O bond formation of a wide range of polysubstituted furans in one pot.

Journal of Organic Chemistry published new progress about C-N bond formation. 94-02-0 belongs to class esters-buliding-blocks, and the molecular formula is C11H12O3, SDS of cas: 94-02-0.

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

Talukder, Mahabubur Rahman Md.; Min, Puah Sze; Jae, Choi Won published the artcile< Integration of cell permeabilization and medium engineering for enhanced enantioselective synthesis of ethyl-S-3-hydroxy-3-phenylpropanoate (S-EHPP)>, Product Details of C11H12O3, the main research area is Kluyveromyces SEHPP cell permeabilization.

Low permeability of microbial cells and mass transfer limitations are major problems for efficient whole-cell biocatalysis. In this work, a method for enhanced enantioselective synthesis of S-EHPP, an intermediate for antidepressant drug fluoxetine via Kluyveromyces lactis whole-cell-catalyzed reduction of Et benzoyl acetate (EBA) was developed by the integration of cell permeabilization and medium engineering. Intracellular EBA reductase of K. lactis was found to be growth associated enzyme and 3-day grown cells that showed the highest activity, were permeabilized by pretreating them with different permeabilizing agents. Among the permeabilizing agents tested, acetone was the most effective and improved the whole-cell activity by 1.7-fold. The medium engineering by the addition of iso-Pr alc. (IPA) further enhanced the reaction rate through increasing mass transfer. Therefore, the integration of cell permeabilization with acetone and medium engineering with IPA, enhanced the activity of whole-cells by 2.0-fold while maintaining S-EHPP enantiomeric excess (EE) of >99.5%. This integration approach led to a S-EHPP yield of 86% within 13 h while only a 70% yield was achieved after 24 h by using untreated cells in IPA free reaction medium. These results demonstrated that the developed method could be applied to improve the performance of other whole-cell biocatalysts.

Biochemical Engineering Journal published new progress about Antidepressants. 94-02-0 belongs to class esters-buliding-blocks, and the molecular formula is C11H12O3, Product Details of C11H12O3.

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

Gao, Feng; Wang, Tengfei; Gao, Meixiang; Zhang, Xia; Liu, Zhuqing; Zhao, Shi Jia; Lv, Zao Sheng; Xiao, Jiaqi published the artcile< Benzofuran-isatin-imine hybrids tethered via different length alkyl linkers: Design, synthesis and in vitro evaluation of anti-tubercular and anti-bacterial activities as well as cytotoxicity>, Product Details of C11H12O3, the main research area is benzofuran isatin imine preparation antitubercular antibacterial cytotoxicity; Anti-bacterial; Anti-tubercular; Benzofuran; Hybrid compounds; Imine; Isatin; Multi-drug resistant; Structure-activity relationship.

The design and synthesis of twenty-two novel benzofuran-isatin-imine hybrids I [R1 = H, F, OCH3; X = (CH2)n; Y = NOCH3, NOC2H5, NNHC(S)NH2, NOH; R3 = H, OCH3, F; n = 1, 2, 3, 4] tethered through propylene, butylene, pentylene and hexylene, and for the evaluation of their in vitro anti-tubercular and anti-bacterial activities as well as cytotoxicity were reported. All benzofuran-isatin-imine hybrids exhibited considerable in vitro anti-TB (MIC: <0.016-0.218 μg/mL and 0.062-14.15 μg/mL against drug-sensitive and MDR MTB, resp.) and anti-bacterial (MIC: 0.25-64 μg/mL and 0.06-16 μg/mL against Gram-pos. and Gram-neg. strains, resp.) activities. All of them also showed acceptable cytotoxicity towards VERO (CC50: 8-128 μg/mL). The most active hybrid I (R1 = H; X = CH2CH2; Y = NOCH3; R3 = OCH3) (MIC: <0.016, 0.062 and 0.16 μg/mL, resp.) was >4.8 and >48 folds more potent than the first line anti-TB agents RIF and INH against both drug-sensitive MTB H37Rv and MDR-TB isolates, resp. Moreover, hybrid I (R1 = H; X = CH2CH2; Y = NOCH3; R3 = OCH3) also demonstrated promising anti-bacterial activities with MIC values of ≤1 μg/mL against the majority of the tested Gram-neg. and Gram-pos. pathogens, which was comparable to vancomycin (MIC: 0.5-4 μg/mL) and CPFX (MIC: 0.125-8 μg/mL) against Gram-pos. bacteria, but slightly less potent than CPFX (MIC: ≤0.03-0.5 μg/mL) against Gram-neg. bacteria. The results indicated that benzofuran-isatin-imine hybrids could act as candidates for the development of anti-TB and anti-bacterial agents.

European Journal of Medicinal Chemistry published new progress about Aliphatic amines Role: RCT (Reactant), RACT (Reactant or Reagent). 94-02-0 belongs to class esters-buliding-blocks, and the molecular formula is C11H12O3, Product Details of C11H12O3.

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

Xiang, Shiqun; Fan, Weibin; Zhang, Wei; Li, Yinghua; Guo, Shiwei; Huang, Deguang published the artcile< Aqueous CO2 fixation: construction of pyridine skeletons in cooperation with ammonium cations>, Quality Control of 94-02-0, the main research area is pyridine preparation green chem; ketone carbon dioxide cycloaddition.

A simple and green method is explored for the synthesis of fused pyridines e.g., 3,7-dimethyl-10,12-dihydrodiindeno[1,2-b:2′,1′-e]pyridine by [2 + 2 + 1 + 1] the cycloaddition of ketones e.g., 6-methyl-1-indanone with an ammonium cation under a CO2 atmosphere. The reactions employed ammonium cation as a nitrogen source and CO2 gas as a carbon source in an aqueous solution Monoethanolamine (MEA) was used as an additive to increase the solubility of CO2 in an aqueous solution The scope and versatility of the method are demonstrated with examples e.g., 3,7-dimethyl-10,12-dihydrodiindeno[1,2-b:2′,1′-e]pyridine. Products are found to be photosensitive and show potential applications as organic optoelectronic materials. A selectfluor-promoted reaction mechanism is proposed based on the exptl. studies. This work is superior as it is a metal-free system, uses CO2 as a carbon source and MEA as an additive in aqueous synthesis.

Green Chemistry published new progress about Cycloaddition reaction. 94-02-0 belongs to class esters-buliding-blocks, and the molecular formula is C11H12O3, Quality Control of 94-02-0.

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

Yang, Zeyu; Fu, Hengwei; Ye, Wenjie; Xie, Youyu; Liu, Qinghai; Wang, Hualei; Wei, Dongzhi published the artcile< Efficient asymmetric synthesis of chiral alcohols using high 2-propanol tolerance alcohol dehydrogenase SmADH2 via an environmentally friendly TBCR system>, Electric Literature of 94-02-0, the main research area is asym synthesis chiral alc propanol oxidation alc dehydrogenase; thermostatic bubble column reactor system alc dehydrogenase ketone reduction.

Alc. dehydrogenases (ADHs) together with the economical substrate-coupled cofactor regeneration system play a pivotal role in the asym. synthesis of chiral alcs.; however, severe challenges concerning the poor tolerance of enzymes to 2-propanol and the adverse effects of the byproduct, acetone, limit its applications, causing this strategy to lapse. Herein, a novel ADH gene smadh2 was identified from Stenotrophomonas maltophilia by traditional genome mining technol. The gene was cloned into Escherichia coli cells and then expressed to yield SmADH2. SmADH2 has a broad substrate spectrum and exhibits excellent tolerance and superb activity to 2-propanol even at 10.5 M (80%, volume/volume) concentration Moreover, a new thermostatic bubble column reactor (TBCR) system is successfully designed to alleviate the inhibition of the byproduct acetone by gas flow and continuously supplement 2-propanol. The organic waste can be simultaneously recovered for the purpose of green synthesis. In the sustainable system, structurally diverse chiral alcs. are synthesized at a high substrate loading (>150 g L-1) without adding external coenzymes. Among these, about 780 g L-1 (6 M) Et acetoacetate is completely converted into Et (R)-3-hydroxybutyrate in only 2.5 h with 99.9% ee and 7488 g L-1 d-1 space-time yield. Mol. dynamics simulation results shed light on the high catalytic activity toward the substrate. Therefore, the high 2-propanol tolerance SmADH2 with the TBCR system proves to be a potent biocatalytic strategy for the synthesis of chiral alcs. on an industrial scale.

Catalysis Science & Technology published new progress about Alcohols, chiral Role: BPN (Biosynthetic Preparation), BIOL (Biological Study), PREP (Preparation). 94-02-0 belongs to class esters-buliding-blocks, and the molecular formula is C11H12O3, Electric Literature of 94-02-0.

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

Gong, Ming; Kim, Jung Keun; Zhao, Xiuli; Li, Yabo; Zhang, Jianye; Huang, Mengmeng; Wu, Yangjie published the artcile< Visible-light-induced α-oxyamination of 1,3-dicarbonyls with TEMPO via a photoelectrocatalytic process applying a DSSC anode or in a DSSC system>, COA of Formula: C11H12O3, the main research area is oxyamination dicarbonyls TEMPO photoelectrocatalytic DSSC.

A green and environmentally friendly photoelectrocatalytic one-pot method was developed for the α-oxyamination between 1,3-dicarbonyls and TEMPO via a photoelectrocatalytic process using visible light as the energy source. The recovered DSSC anode (photocatalyst) could be used > 8 times, at the same time, the α-oxyamination reaction proceeding in the DSSC device might be involved in the photoelectrocatalysis process. Mechanistic studies establish that the reaction might undergo both the visible-light-induced radical and the ionic reaction processes.

Green Chemistry published new progress about 1,3-Dicarbonyl compounds Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), RCT (Reactant), PROC (Process), RACT (Reactant or Reagent). 94-02-0 belongs to class esters-buliding-blocks, and the molecular formula is C11H12O3, COA of Formula: C11H12O3.

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

Chen, An-jun; Luo, Wei; Niu, Kai-li; Peng, Yi-tao; Liu, Xing-yan; Shen, Guang-hui; Zhang, Zhi-qing; Wan, Hu; Luo, Qing-ying; Li, Shan-shan published the artcile< Research on the relationship between sensory profile and physicochemical properties of paocai, a Chinese fermented vegetable>, SDS of cas: 94-02-0, the main research area is paocai fermented vegetable sensory profile physicochem property.

Paocai is a popular fermented vegetable side dish or appetizer in China. This study was to investigate the relationship between its sensory quality and physicochem. properties by different statistical methods and to establish a regression prediction model for sensory scores. Principal component anal. disclosed that the sensory properties were neg. correlated with lactic acid and acetic acid contents. The cluster anal. classified the samples into three groups based on their sensory scores and the main differences among the groups were firmness, salinity, and acid production Finally, a prediction model with an adjusted R2 of 85.28% was established by partial least squares regression to predict the sensory scores and showed high reliability on six tested samples. Practical applications : Paocai is a popular side dish or appetizer in China that has a large annual production and consumption. Nowadays, the evaluation of the quality of paocai is mainly relied on sensory assessment, which is expensive to implement, time-consuming, and sometimes cannot be implemented online for immediate feedback. By establishing the relationship between sensory quality and physicochem. properties of paocai, it is possible to build online feedback of paocai production by instrumental detections.

Journal of Food Processing and Preservation published new progress about Alcohols Role: BUU (Biological Use, Unclassified), BIOL (Biological Study), USES (Uses). 94-02-0 belongs to class esters-buliding-blocks, and the molecular formula is C11H12O3, SDS of cas: 94-02-0.

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

Yang, Yiwei; Kong, Mengya; Feng, Pengfei; Meng, Ruiqian; Wei, Xiaohe; Su, Pingru; Cao, Jing; Feng, Wei; Liu, Weisheng; Tang, Yu published the artcile< Self-Assembly of Heterogeneous Structured Rare-Earth Nanocrystals Controlled by Selective Crystal Etching and Growth for Optical Encoding>, Recommanded Product: Ethyl 3-oxo-3-phenylpropanoate, the main research area is self assembly rare earth nanocrystal etching optical encoding.

Programmatically assembling inorganic nanocrystals (NCs) into long-range-ordered superstructures has been well-documented as a theme to construct novel materials with unique properties. Herein, one-dimensional oriented self-assembly of core-shell structured rare-earth doped β-NaREF4 NCs is reported. In the epitaxial growth process, β-NaREF4 crystals featuring larger neg. lattice mismatch usually exhibited longitudinal growth preference. In this case, the lateral crystal of the hexagonal prisms would be etched by OA- ions along the direction parallel to the (001) facets. This anisotropic morphol. evolution can lead to the anisotropic noncovalent interactions between long-chain alkyls of oleic acid mols. and contribute to the oriented self-assembly in the 〈001〉 direction. On the basis of the studies on the heterogeneous NC self-assembly, a rare-earth nanohybrid assembly is further prepared by functionalizing the NC surface with a pH-responsive ligand N-(2-pyridinyl)benzoylacetamide (HPBA), and this nanohybrid self-assembly exhibits great potential in spatial-temporal dimensional optical encoding. This study provides a novel strategy based on selective crystal etching and epitaxial growth for oriented self-assembly of NCs and represents an important step toward the design of well-defined superstructures with unique properties.

ACS Applied Nano Materials published new progress about Coded information. 94-02-0 belongs to class esters-buliding-blocks, and the molecular formula is C11H12O3, Recommanded Product: Ethyl 3-oxo-3-phenylpropanoate.

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

Qin, Zemin; Ma, Renchao; Ying, Shenpeng; Li, Fanzhu; Ma, Yongmin published the artcile< Synthesis of Substituted Pyrimido[1,2-b]indazoles through (3+2+1) Cyclization of 3-Aminoindazoles, Ketones, and N,N-Dimethylaminoethanol as One-Carbon Synthon>, Electric Literature of 94-02-0, the main research area is pyrimidoindazole preparation; aminoindazole ketone dimethylaminoethanol three component cyclization.

The 2-mono- or 2,3-disubstituted pyrimido[1,2-b]indazoles I (R1 = Ph, thiophen-2-yl, naphth-2-yl, etc.; R2 = H, Me; R3 = H, 10-Br, 9-Br, 8-Br, etc.) are synthesized by a (3+2+1) three-component cyclization of 3-aminoindazoles II, ketones R1C(O)CH2R2 and N,N-dimethylaminoethanol as a methine source. The reaction demonstrates good tolerance of both aromatic and aliphatic ketones, as well as various substitution patterns in air.

Advanced Synthesis & Catalysis published new progress about Cyclization ((3+2+1)). 94-02-0 belongs to class esters-buliding-blocks, and the molecular formula is C11H12O3, Electric Literature of 94-02-0.

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