1088-32-0

Upstream product

• 7713-79-3 3-phenyl-5-isoxazolone 
• 100-52-7 benzaldehyde 
• 94-02-0 ethyl 3-oxo-3-phenylpropionate 
• 127916-11-4 ethyl bezoylacetate oxime 
• 1076-59-1 3-phenyl-4H-isoxazol-5-one 
• 932-90-1 Benzaldoxime 

Downstream Products

• 7713-79-3 3-phenyl-5-isoxazolone 
• 932-90-1 Benzaldoxime 
• 53870-19-2 methyl 3-(4,5-dihydro-5-oxo-3-phenylisoxazol-4-yl)-3-phenylpropanoate 
• 21136-48-1 1,3-diphenylhex-5-en-1-one 
• 109012-83-1 dimethyl 2-(3-oxo-1,3-diphenylpropyl)malonate 
• 220044-16-6 1,3,5-triphenylpentane-1,4-dione 
• 494844-63-2 (hex-5-en-1-yne-1,3-diyl)dibenzene 

Relevant academic research and scientific papers

Facile and expedient synthesis of α,β-unsaturated isoxazol-5(4H)-ones under mild conditions

Abstract: It was found that nano-SiO2–H2SO4 was catalyzed by the three-component cyclocondensation of aryl/heteroaryl aldehydes, hydroxylamine hydrochloride, and β-ketoesters toward the synthesis of α,β-unsaturated?isoxazol-5(4H)-ones under green conditions. The reaction yielded the corresponding heterocycles at room temperature in relatively shorter reaction times. It merits mentioning that the mild conditions allow the synthesis of several α,β-unsaturated?isoxazol-5(4H)-ones using this method. In this study, some new derivatives of isoxazolones were also synthesized and characterized. It is efficient, clean, simple, safe, and ecologically friendly. This straightforward method is cost-effective and requires no preparation of reactants. The three-component annulation was performed without using energy sources, for example, heat, ultrasound wave, and microwave irradiation. Graphic abstract: [Figure not available: see fulltext.].

Synthesis and characterization of nanocrystalline hydroxyapatite and its catalytic behavior towards synthesis of 3,4-disubstituted isoxazole-5(4H)-ones in water

In the present work, the nanocrystalline particles of hydroxyapatite (HAp) using an easy alkoxide-based sol–gel technique including triethyl phosphate [PO (OC2H5)3] and Ca (NO3)2·4H2O as P and Ca precursors have been synthesized. The sample characterization was performed by X-ray diffraction, Fourier transform-infrared analysis, scanning electron microscopy, thermal analysis (thermogravimetric analysis/differential thermal analysis), and elemental analysis of energy-dispersive X-ray analysis. It is interesting that single phase of HAp was obtained at a low firing temperature of 500°C. Modified Scherrer equation as the Williamson?Hall method was applied for the measurement of crystallite size distributions and micro-strain of the sample. The determined crystallite size by complementary technique of transmission electron microscopy has good consistency with those obtained from the Scherrer formula. Moreover, we reported the one-pot synthesis of 3,4-disubstituted isoxazole-5(4H)-ones through the aqueous solution reaction of three components of ethyl acetoacetate, hydroxylamine hydrochloride and various aromatic aldehydes at room temperature. This protocol offers several advantages, including a simple work-up procedure, very short reaction times (under 25?min), in accordance with the principles of green chemistry, recyclability, excellent yields (87–98%) and environmentally friendly.

One-pot green synthesis of isoxazol-5(4H)-one derivatives using Dowex1-x8OH in water

4-(Arylmethylidene)-3-methylisoxazol-5(4H)-ones and 4-(arylmethylidene)-3-phenylisoxazol-5(4H)-ones were synthesized in a one-pot three-component procedure in the presence of Dowex1-x8OH as catalyst in water. The products were obtained in high yields (90-

Michael Addition of Soft Carbon Nucleophiles to Alkylidene Isoxazol-5-ones: A Divergent Entry to β-Branched Carbonyl Compounds

A novel, divergent strategy toward the synthesis of β-branched (and linear) carbonyl compounds is developed by taking advantage of alkylidene isoxazol-5-ones as key building blocks. The yields obtained range from good to excellent, therefore making the described methods attractive options for building such molecules. (Chemical Equation).

Regioselective catalytic asymmetric C-alkylation of isoxazolinones by a base-free palladacycle-catalyzed direct 1,4-addition

Isoxazolinones constitute a class of heterocycles utilized for the development of novel drug candidates. The cyclic oxime ester motif is also synthetically useful as it contains functional handles which have previously been used to provide access to an assortment of valuable compound classes not easily accessible by alternative approaches. However, asymmetric methods towards isoxazolinones are notoriously scarce. Herein we report the first catalytic asymmetric alkylations of isoxazolinones forming all-C-substituted quaternary stereocenters. The present studies were driven by the question of how to control the regioselectivity in the competition of different nucleophilic positions. The investigation of a direct 1,4-addition uncovered that a sterically demanding palladacycle catalyst directs the reactivity in the absence of a base nearly exclusively to the nucleophilic C atom, while at the same time it allows for high enantioselectivity and TONs up to 1900.

Nano Fe2O3, clinoptilolite and H3PW12O40 as efficient catalysts for solvent-free synthesis of 5(4H)-isoxazolone under microwave irradiation conditions

A quick and solvent-free approach involving the exposure of neat reactants to microwave irradiation in conjunction with the use of clinoptilolite, H3PW12O40 and Fe2O3 nanoparticle catalysts is described. In this work, condensation of hydroxylamine hydroch

New pathway to pyrrolidinones and pyrrolizidinones using aryl aldehydes, 3-phenyl-5-isoxazolone and secondary amino acids

A novel and efficient approach to pyrrolidinones and pyrrolizidinones via a one-pot multicomponent reaction of aryl aldehydes, 3-phenyl-5-isoxazolone, sarcosine and l-proline, respectively in methanol under reflux condition is reported.

Fast and efficient synthesis of 4-arylidene-3-phenylisoxazol-5-ones

A convenient and easy synthesis of 4-arylidene-3-phenylisoxazol-5-ones by the three-component reaction of hydroxylamine, ethyl benzoylacetate and aromatic aldehydes in the presence of DABCO in refluxing ethanol is reported.

The convenient synthesis of 4-arylmethylidene-4,5-dihydro-3-phenylisoxazol- 5-ones

4-Arylmethylidene-4,5-dihydro-3-phenylisoxazol-5-ones were synthesized by the convenient three-component reaction of ethyl benzoylacetate, hydroxylamine and aromatic aldehydes in the presence of pyridine. The target compounds were also obtained by the rea

A convergent approach to functionalised alkynes

Knoevenagel type condensation of 4-unsubstituted isoxazolinones with ketones or aldehydes followed by Michael addition of a nucleophile - hydride, cyanide, or phosphite - and exposure of the adduct to sodium nitrite/aqueous acetic acid and ferrous sulfate