3-DIPOLAR CYCLOADDITION REACTION
Regioselectivie Synthesis of New Spiro-Oxindolopyrrolidines via a Three-Component Asymmetric 1,3-Dipolar Cycloaddition Reaction of Azomethine Ylides aAnd Chiral Menthyl Cinnamate
... 1,3-Dipolar cycloaddition reaction of azomethine ylides, including pyrrolidine derivatives, with olefinscan be useful method for the synthesis of chiral ...
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PEG MEDIATED ONE POT SYNTHESIS OF 1,2,3 BISTRIAZOLE DERIVATIVES BY 1,3 DIPOLAR CYCLOADDITION REACTION AND THEIR BIOLOGICAL EVALUATION
... A series of 1,2,3-bistriazole derivatives 4a-i were synthesized by the treatment of 1, 3 dibromopropane with sodium azide and substituted alkynes by 1,3-dipolar cycloaddition reaction. Solvent ...
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An efficient one pot synthesis of C2 symmetric pyrrolidines and dispiro pyrrolidines/pyrrolizidines through 1,3 dipolar cycloaddition reaction
... 1,3-Dipolar cycloaddition reactions are efficient methods for the construction of heterocyclic units in a highly regio- and stereoselective manner ...
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Regioselective synthesis of sugar fused dispiropyrrolizidines via intermolecular 1,3 dipolar cycloaddition reaction
... glycomolecules, 3 such as proteoglycans, glycoproteins, 4 glycolipids, 5 and antibiotics have shed light on the significance of carbohydrate parts (glycons) in molecular recognition for the transmission of ...
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Design and synthesis of spiro derivatives containing a thiophene ring and evaluation of their Anti-microbial activity
... 1,3-dipolar cycloaddition reaction and also the bioactivity of spiro [pyrrolidine-2,3'- oxindoline] compounds, three varieties of trapping agents like dipolarophiles, diketone, - amino acid, were ...
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Regioisomers of 1, 3-Dipolar Cycloadducts – A Computational Study
... 1,3-dipolar cycloaddition reaction and mechanistic aspect, the 1,3-dipolar reaction are used as an important route for synthesis of five membered heterocycles and have interested both ...
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Novel approach to the synthesis of new isoxazole analogues as potent antioxidant agents
... 1,3-dipolar cycloaddition reaction, the nitrile oxides generated by the catalytic dehydrogenation of aromatic aldoximes (2a-h) with chloramine-T in ethyl alcohol were trapped in situ with ...
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An Efficient and Novel Regioselective Synthesis of Phosphonylpyrazoles from Vinylazides and Bestmann-Ohira Reagent
... azide group connected to an alkene moiety permit this functional group to act as an electrophile, a nucleophile, or a radical acceptor, and have turned these compounds into indispensable building blocks for organic ...
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Isoxazolines: An insight to their synthesis and diverse applications
... 1,3-Dipolar cycloaddition reaction of nitrile oxides generated in situ from aldoximes with 4-methoxy cinnamonitrile afforded series of isoxazolines in good yield ...The reaction is applicable ...
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Synthesis of 1,2,3-Triazole 5-Chloroisatin Derivatives via Copper-Catalyzed 1,3-Dipolar Cycloaddition Reactions
... Azides are considered to be very important compounds in industry and in biological application. The azide derivatives have been used in rubber vulcanization, to produce polymers, dyes, foam of plastics, drugs, pesticides ...
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IJPCBS 2013, 3(2), 294-304 Jayaroopa et al. ISSN: 2249-9504 294
... the reaction of aromatic aldehydes and acetophenone were converted to dibromo derivatives with bromine-acetic acid and then dibromo derivatives were treated with triethyl amine to get alkyne ...1,3-dipolar ...
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Enhanced Nonlinear Absorption Performance of Reduced Graphene Oxide Nanohybrid Covalently Functionalized by Porphyrin via 1,3 Dipolar Cycloaddition
... The evidence of successful functionalization following the covalent coupling of theporphyrinonto RGO via 1,3-dipolar cycloaddition reaction can be obtained from the FTIR spectra. As shown in Figure ...
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A facile and regioselective synthesis of Spiro pyrrolidines and pyrrolizines through 1, 3 dipolar cycloaddition protocol
... 1,3-dipolar cycloaddition reaction of azomethine ylide with olefins are considered as one of the most useful method for the construction of the pyrrolidine structural ...pharmaceuticals. 3 ...
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Synthesis, Characterization and 1, 3-Dipolar Cycloaddition of Novel Sugar- Derived Nitrones with N-Arylmaleimides
... 1,3-dipolar cycloaddition to olefins and ...1,3-dipolar cycloaddition reaction between a nitrone and an olefin gives the isoxazolidine ...1,3-dipolar cycloaddition of ...
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A Facile Regioselective 1,3-dipolar Cycloaddition Protocol for the Synthesis of Thiophene containing Spiro Heterocycles
... stereoselective reaction between α,β-unsaturated ketones with thiophene substituents and non-stabilized azomethineylides, generated in situ from acenaphthenequinone and ...mild reaction conditions, a ...
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pyrrolo[3,4-b ]pyrroles by the domino reaction of
... Intramolecular 1,3-Dipolar Cycloaddition of Cyclic Azomethine Ylides and Nitrones. A novel entry into 1-methyl- and[r] ...
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Synthesis and characterization of some new Benzotriazole derivatives via 1,3-dipolar cycloaddition reactions
... The Schiff bases have been synthesized by reaction of some primary amine [ para-toluidine , benzidine , naphthylamine) (0.01 mol) with different substituted benzaldehydes (0.01 mol) in absolute Ethanol for ...
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2,3 Diphenyl 2,3 dihydrospiro[1,3 oxazole 5(4H),1′(3′H) 2 benzofuran] 3′ one
... with 3-methylenephthalide, (1), produced 3 0 -arylspiro[isobensofuran-1(3H),5 0 (4 0 H)- isoxazol]-3-ones, (3), which possess good herbicidal and plant growth regulant activities (Howe & ...
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Cascade oxime formation, cyclization to a nitrone, and intermolecular dipolar cycloaddition.
... molecular cycloaddition using this strategy and these make use of a non-enolisable aldehyde as the substrate for reaction with ...nitrone 3 that can be trapped intermolecularly with dimethyl maleate ...
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1,3-dipolar cycloaddition reactions in aqueous media and investigations into solid phase ether synthesis
... Having investigated intermolecular nitrile oxide 1,3-dipolar cycloadditions in aqueous media, we wished to explore the feasibility of using water as a solvent for intramolecular nitrile oxide cycloadditions under ...
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