Category: 94-02-0

Roy, Sourav; Kumar, Gourav; Chatterjee, Indranil published the artcile< Photoinduced Diverse Reactivity of Diazo Compounds with Nitrosoarenes>, HPLC of Formula: 94-02-0, the main research area is nitrosobenzene aralkyl diazoacetate oxygen transfer photochem; alkyl oxo aryl acetate preparation; nitrosoarene aralkyl diazoacetate regioselective cycloaddition photochem; aralkyl oxazetidinone preparation.

A diverse reactivity of diazo compounds with nitrosobenzene in an oxygen-transfer process and a formal [2 + 2] cycloaddition was reported. Nitosoarene was exploited as a mild oxygen source to oxidize an in-situ generated carbene intermediate under visible-light irradiation UV-light-mediated in-situ generated ketenes reacted with nitosobenzenes to deliver oxazetidine derivatives These operationally simple processes exemplify a transition-metal-free and catalyst-free protocol to give structurally diverse α-ketoesters or oxazetidines.

Organic Letters published new progress about [2+2] Photocycloaddition reaction. 94-02-0 belongs to class esters-buliding-blocks, and the molecular formula is C11H12O3, HPLC of Formula: 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

Pogaku, Naresh; Krishna, Palakodety Radha; Prapurna, Y. Lakshmi published the artcile< Iodine-Mediated Nucleophilic Direct Oxidative α-Acetoxylation and α-Alkoxylation of Ketones>, SDS of cas: 94-02-0, the main research area is ketone ammonium acetate iodine catalyst oxidative acetoxylation green chem; oxo ethyl acetate preparation; methanol phenylethanone iodine catalyst oxidative alkoxylation green chem; methoxy phenylethanone preparation.

A general and facile approach for the direct α-functionalization of ketones mediated by iodine was developed. The operational simplicity, easily available starting materials, mild reaction conditions and tolerance of wide range of functional groups are the major benefits of the reaction.

ChemistrySelect published new progress about Acetals Role: SPN (Synthetic Preparation), PREP (Preparation). 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, Jian; Wang, Xin; El-Harairy, Ahmed; Bai, Rongxian; Gu, Yanlong published the artcile< Bronsted acid-catalyzed facile synthesis of α-substituted N-arylaminoacetals and their downstream conversions to functionalized pyrroles>, Synthetic Route of 94-02-0, the main research area is glyoxal dimethyl acetal arylamine ketone Mannich Bronsted acid catalyst; aryl aminoacetal preparation dicarbonyl compound cyclization; pyrrole preparation.

The α-substituted N-arylaminoacetals RNHCH(CH(OCH3)2)CH2C(O)R1 (R = Ph, 3,4-difluorophenyl, 2-chlorophenyl, etc.; R1 = Me, Ph, thiophen-2-yl, etc.) are important building blocks for organic synthesis, which can be synthesized via Mannich reaction by using glyoxal di-Me acetal as a key precursor. As the acetal fragment was known to be susceptible to acid, in literature methods, the Mannich reaction was performed under either neutral or gently acidic conditions. As a result, only a few kinds of α-substituted N-arylaminoacetals have been synthesized via Mannich reaction until now. The Mannich adducts of glyoxal di-Me acetal, arylamines RNH2 and ketones CH3C(O)R1 are quite stable toward strong Bronsted acid. This led to use successfully p-toluenesulfonic acid as the acid catalyst to synthesize a broad range of α-substituted N-arylaminoacetals. The Mannich adducts could be obtained in good to excellent yields. Particularly, these products were demonstrated to be able to react with 1,3-dicarbonyl compounds R2C(O)CH2C(O)R3 [R2 = OCH3, Me, (4-methoxyphenyl)aminyl, etc.; R3 = H, Me, n-Bu, Ph, i-Pr] in the presence of Sc(OTf)3 catalyst. A special class of multi-substituted pyrroles I (R1 = Me, Ph) was thus synthesized and can be converted to some important heterocyclic compounds including Me 2,6-dimethyl-1-(4-methylphenyl)-5-phenyl-1H-indole-3-carboxylate and Me 5-formyl-2-methyl-1-(4-methylphenyl)-1H-pyrrole-3-carboxylate. Di-Me acetals of quinoline-2-carbaldehydes II (R4 = OCH3, H; R5 = H, OCH3; R6 = OCH3; R6R7 = -CH=CH-CH=CH-; R5R6 = -CH=CH-CH=CH-) were also synthesized via one-pot three-component reactions of glyoxal di-Me acetal, electron-rich anilines 3-R4-4-R5-5-R6-6-R7CHNH2 and acetone.

Molecular Catalysis published new progress about 1,3-Dicarbonyl compounds Role: RCT (Reactant), RACT (Reactant or Reagent). 94-02-0 belongs to class esters-buliding-blocks, and the molecular formula is C11H12O3, Synthetic Route of 94-02-0.

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

Roy, Sourav; Kumar, Gourav; Chatterjee, Indranil published the artcile< Photoinduced Diverse Reactivity of Diazo Compounds with Nitrosoarenes>, HPLC of Formula: 94-02-0, the main research area is nitrosobenzene aralkyl diazoacetate oxygen transfer photochem; alkyl oxo aryl acetate preparation; nitrosoarene aralkyl diazoacetate regioselective cycloaddition photochem; aralkyl oxazetidinone preparation.

A diverse reactivity of diazo compounds with nitrosobenzene in an oxygen-transfer process and a formal [2 + 2] cycloaddition was reported. Nitosoarene was exploited as a mild oxygen source to oxidize an in-situ generated carbene intermediate under visible-light irradiation UV-light-mediated in-situ generated ketenes reacted with nitosobenzenes to deliver oxazetidine derivatives These operationally simple processes exemplify a transition-metal-free and catalyst-free protocol to give structurally diverse α-ketoesters or oxazetidines.

Organic Letters published new progress about [2+2] Photocycloaddition reaction. 94-02-0 belongs to class esters-buliding-blocks, and the molecular formula is C11H12O3, HPLC of Formula: 94-02-0.

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

Roy, Sourav; Kumar, Gourav; Chatterjee, Indranil published the artcile< Photoinduced Diverse Reactivity of Diazo Compounds with Nitrosoarenes>, HPLC of Formula: 94-02-0, the main research area is nitrosobenzene aralkyl diazoacetate oxygen transfer photochem; alkyl oxo aryl acetate preparation; nitrosoarene aralkyl diazoacetate regioselective cycloaddition photochem; aralkyl oxazetidinone preparation.

A diverse reactivity of diazo compounds with nitrosobenzene in an oxygen-transfer process and a formal [2 + 2] cycloaddition was reported. Nitosoarene was exploited as a mild oxygen source to oxidize an in-situ generated carbene intermediate under visible-light irradiation UV-light-mediated in-situ generated ketenes reacted with nitosobenzenes to deliver oxazetidine derivatives These operationally simple processes exemplify a transition-metal-free and catalyst-free protocol to give structurally diverse α-ketoesters or oxazetidines.

Organic Letters published new progress about [2+2] Photocycloaddition reaction. 94-02-0 belongs to class esters-buliding-blocks, and the molecular formula is C11H12O3, HPLC of Formula: 94-02-0.

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

Zhang, Youchi; Zhang, Jingli; Yuan, Ye; Liu, Liran; Chen, Bifeng; Sun, Taolei published the artcile< Synthesis of Polysubstituted 2H-Pyran-2-ones or Phenols via One-Pot Reaction of (E)-β-Chlorovinyl Ketones and Electron-Withdrawing Group Substituted Acetates or β-Diketones>, COA of Formula: C11H12O3, the main research area is pyranone polysubstituted phenol preparation chlorovinyl ketone acetate beta diketone.

This paper describes a facile one-pot synthesis of highly functionalized 2H-pyran-2-ones and phenols through a base-promoted annulation of readily available β-chlorovinyl ketones with various active methylene compounds Conjugate addition of electron-withdrawing group substituted acetates to allenone intermediates and direct conjugate addition of β-diketones to β-chlorovinyl ketones reveal versatile electrophilic pathways of β-chlorovinyl ketones under different reaction conditions. In particular, cyclocondensation is regiospecific for 3,5-disubstituted phenols. Moreover, the utility of [3+3] cyclocondensation is further illustrated by the concise synthesis of benzofuran derivative and penta- or hexa-substituted phenol construction.

European Journal of Organic Chemistry published new progress about Active methylene compounds Role: RCT (Reactant), 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