7152-68-3

Usage

InChI:InChI=1/C15H11NO4/c17-13(10-6-2-1-3-7-10)15-14(20-15)11-8-4-5-9-12(11)16(18)19/h1-9,14-15H

Upstream product

• 70-11-1 α-bromoacetophenone 
• 552-89-6 2-nitro-benzaldehyde 
• 532-27-4 1-chloroacetophenone 
• 71-43-2 benzene 
• 7152-68-3 trans-2,3-epoxy-1-(2-nitrophenyl)-3-phenylpropan-1-one 
• 53744-31-3 2-nitrochalcone 
• 98-86-2 acetophenone 
• 7473-93-0 (E)-3-(2-nitrophenyl)-1-phenylprop-2-en-1-one 
• 100-42-5 styrene 
• 124-38-9 carbon dioxide 

Downstream Products

• 110876-42-1 5-(2-nitrophenyl)-1,3-diphenyl-1H-pyrazole 
• 92438-25-0 5-(2-nitrophenyl)-3-phenylisoxazole 
• 33155-63-4 1-Benzoyl-1-phenylmercapto-2-(o-nitro-phenyl)-aethylen 
• 1217439-22-9 C₂₃H₁₈N₂O₄ 
• 1197391-19-7 4-bromo-2-phenylquinolin-3-ol 
• 31588-18-8 3-hydroxy-2-phenyl-1H-quinolin-4-one 
• 612-96-4 2-Phenylquinoline 
• 5855-50-5 3-hydroxy-2-phenylquinoline 
• 28737-01-1 6-chloro-1,3-dihydroxy-2-phenyl-1H-quinolin-4-one 
• 73936-26-2 C₁₅H₁₀⁽²⁾HNO₄ 
• 7152-68-3 (2RS,3RS)-2,3-epoxy-3-(2-nitro-phenyl)-1-phenyl-propan-1-one 

Relevant academic research and scientific papers

Asymmetric Epoxidation of Enones Promoted by Dinuclear Magnesium Catalyst

Asymmetric synthesis with cheaper and non-toxic alkaline earth metal catalysts is becoming an important and sustainable alternative to conventional catalytic methodologies mostly relying on precious metals. In spite of some sustainable methods for enantioselective epoxidation of enones, the development of a well-defined and efficient catalyst based on magnesium complexes for these reactions is still a challenging task. In this perspective, we present the application of chiral dinuclear magnesium complexes for asymmetric epoxidation of a broad range of electron-deficient enones. We demonstrate that the in situ generated magnesium-ProPhenol complex affords enantioenriched oxiranes in high yields and with excellent enantioselectivities (up to 99% ee). Our extensive study verifies the literature data in this area and provides a step forward to better understand the factors controlling the oxygenation process. Elaborated catalyst offers mild reaction conditions and a truly wide substrate scope. (Figure presented.).

Acid catalyzed rearrangements of aryl 3-(2-nitroaryl)oxiran-2-yl ketones

Studies of chemical behavior of aryl 3-(2-nitrophenyl)oxiran-3-yl ketones in acidic medium revealed the possible occurrence of two competitive rearrangements leading to 2-(2-oxo-2-arylacetamido)benzoic acids and 3-hydroxyquinolin-4(1H)-ones.

Crown-ether-modified cyclic dipeptides as supramolecular chiral catalysts

With the objective to develop supramolecular catalysts for useful chemical transformations, we report here a rapid and efficient solid-phase synthesis of novel cyclic dipeptides (crown-CDPs) with a diversity of L-DOPA derived crown ether substituents and

Simple synthesis of 3-hydroxyquinolines via Na2S2O4-mediated reductive cyclization of (2-(2-nitrophenyl)oxiran-1-yl)(aryl)methanones (o-nitrobenzalacetophenone oxides)

An efficient sodium dithionite (Na2S2O4)-mediated method for construction of 3-hydroxyquinolines via in situ Meinwald rearrangement/intramolecular reductive cyclization of o-nitrobenzalacetophenone oxides has been developed. The practical approach is of excellent functional group compatibility with as high as 98% yield under mild reaction conditions. Moreover, further manipulation successfully furnished 4-bromo substituted derivatives which may provide a promising potential application in exploring biologically active analogs of 3-hydroxyquinolines.

Revisiting the Juliá-Colonna enantioselective epoxidation: Supramolecular catalysis in water

We describe an efficient epoxidation process leading to chiral epoxyketones using the reusable homo-oligopeptide poly-l-leucine (PLL) in pure water, without any organic co-solvent. A range of substituted epoxyketones can be accessed with good conversions and high enantioselectivities. Based on the experimental results and computational studies, we propose a mechanism that demonstrates the importance of both the α-helical structure and the presence of a hydrophobic groove of the homo-oligopeptide catalyst for reactivity and selectivity.

Biomimetic epoxidation in aqueous media catalyzed by cyclic dipeptides

We have developed a practical epoxidation of electron-deficient enones in aqueous media using cyclic dipeptides as bioinspired green catalyst. Optimizing the reaction conditions in a triphasic system led to efficient conditions providing epoxides with good enantioselectivities. Depending on the catalyst substituent chirality, both enantiomers are obtained. The cyclic rigidity impacts significantly the enantioselectivity.

Highly selective multifunctional nanohybrid catalysts for the one-pot synthesis of α,β-epoxy-chalcones

An efficient one-pot heterogeneous process for producing chiral α,β-epoxy-chalcones from the corresponding aldehydes and ketones has been described. The nanohybrid materials based on poly-l-leucine immobilised into rehydrated hydrotalcites did not require any pre-activation and were easily recovered and recycled for four consecutive runs without losing their catalytic efficiency in terms of conversion, total selectivity towards the corresponding epoxy-chalcones and excellent enantioselectivity.

N-Heterocyclic Carbene Catalyzed Oxidative Coupling of Alkenes/ α-Bromoacetophenones with Aldehydes: A Facile Entry to α,β-Epoxy Ketones

A novel, N-heterocyclic carbene (NHC) catalyzed direct oxidative coupling of styrenes with aldehydes has been described for the synthesis of α,β-epoxy ketones in good yields. This unprecedented regioselective oxidative coupling employs NBS/DBU/DMSO (DBU=1,8-diazabicyclo [5.4. 0] undec-7-ene, DMSO=dimethylsulfoxide, NBS=N-bromosuccinimide) as an oxidative system at ambient conditions. Additionally, first NHC-catalyzed Darzens reaction of α-bromoketones and aldehydes under mild reaction conditions has also been described. Interestingly, mechanistic studies have revealed the preferred reactivity of NHC with alkene/α-bromoketone rather than aldehydes, thus proceeding via the ketodeoxy Breslow intermediate.

One approach to cyclic carbonates via a three-component cyclization of phenacyl bromide, CO2, and aldehyde

A three-component cyclization reaction was designed for synthesizing cyclic carbonates in a single operation from phenacyl bromide, CO2, and aldehyde in the presence of lithium diisopropylamide (LDA). These novel reactions were achieved under extremely mild conditions to generate the target products in moderate to good yields within 10 min.

Asymmetric epoxidation of substituted chalcones and chalcone analogues catalyzed by α-d-glucose- and α-d-mannose-based crown ethers

The chiral monoaza-15-crown-5 lariat ethers annellated to methyl-4,6-O-benzylidene-α-d-glucopyranoside-1 or mannopyranoside 2 have been applied as phase-transfer catalysts in the epoxidation of substituted chalcones and chalcone analogues with tert-butylhydroperoxide resulting in significant asymmetric induction. It was found that the position of the substituents in the aromatic ring of the chalcone had an influence both on the chemical yields and enantiomeric excesses. The lowest enantioselectivities (62-83% ee) were found in the case of ortho-substituted model compounds. The highest ee values (ee of 83-97%) were obtained in the case of para-substituted models. From among the chalcone analogues, the maximum ee (90-92%) was detected for the model compound having α-tert-butyl- and β-aryl groups. Using glucose-based crown ether 1, formation of the (-)-enantiomer was preferred, while applying mannose-based 2 as the catalyst, the (+)-enantiomer was in excess.