Search results for "Chroman"

showing 5 items of 25 documents

An easy access to fused chromanones via rhodium catalyzed oxidative coupling of salicylaldehydes with heterobicyclic olefins

2016

Abstract Herein we describe a detailed study on the rhodium catalyzed oxidative coupling of salicylaldehydes with heterobicyclic olefins such as diazabicyclic olefins and urea-derived bicyclic olefins. The developed method provides an ideal route to fused chromanone systems in a single synthetic step. Moreover, the scope of this methodology was extended to different oxa/aza-bridged bicyclic urea derivatives.

diazabicyclic olefinsBicyclic moleculechromanone010405 organic chemistryOrganic Chemistrychemistry.chemical_elementrhodium catalyzedsalicylaldehyde010402 general chemistry01 natural sciencesBiochemistry0104 chemical sciencesRhodiumCatalysischemistry.chemical_compoundchemistrySalicylaldehydeDrug DiscoveryOrganic chemistryOxidative coupling of methaneUrea derivativesta116urea derived bicyclic olefinsTetrahedron
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An easy access to fused chromanones via rhodium catalyzed oxidative coupling of salicylaldehydes with heterobicyclic olefins

2016

Herein we describe a detailed study on the rhodium catalyzed oxidative coupling of salicylaldehydes with heterobicyclic olefins such as diazabicyclic olefins and urea-derived bicyclic olefins. The developed method provides an ideal route to fused chromanone systems in a single synthetic step. Moreover, the scope of this methodology was extended to different oxa/aza-bridged bicyclic urea derivatives. peerReviewed

diazabicyclic olefinschromanonerhodium catalyzedsalicylaldehydeurea derived bicyclic olefins
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Uso di estratti antiossidanti di crusca di grano duro per ottenere una nuova pasta funzionale con l’approccio di arricchimento “da grano a grano”

2017

La crescente attenzione dei consumatori per gli alimenti funzionali ha stimolato le ricerche su nuovi tipi di pasta ottenuti con ingredienti in grado di migliorarne l’attività antiossidante, il profilo amminoacidico o il contenuto di acidi grassi polinsaturi e fibre, con risultati, però, non sempre soddisfacenti a causa di alterazioni delle proprietà tecnologiche e sensoriali della pasta (consistenza, tenuta alla cottura, odori e sapori inusuali). La crusca di grano duro contiene numerosi composti bioattivi, tra cui fenoli, carotenoidi e tococromanoli, che possono essere estratti con tecnologie green e reintegrati nell’impasto per ottenere prodotti con caratteristiche simili alla pasta trad…

functional pasta bran carotenoids phenolics tocochromanols serum antioxidant statuspasta funzionale crusca carotenoidi composti fenolici tococromanoli stato antiossidante del siero
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Asymmetric Organocatalytic Synthesis of 4-Aminoisochromanones via a Direct One-Pot Intramolecular Mannich Reaction

2016

Synthesis 48(24), 4451 - 4458(2016). doi:10.1055/s-0035-1562522

one-pot reaction010405 organic chemistryChemistryOrganic Chemistryasymmetric synthesisEnantioselective synthesis010402 general chemistry54001 natural sciencesMedicinal chemistryCatalysis0104 chemical sciencesCatalysisIntramolecular forceOne pot reactionOrganocatalysisddc:540isochromanonesMannich reactionOrganic chemistryAmine gas treatingStereoselectivityorganocatalysisMannich reactionorganocatalysis; one-pot reaction; asymmetric synthesis; isochromanones; Mannich reaction
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Organocatalytic Oxa-Michael/Michael/Michael/Aldol Condensation Quadruple Domino Sequence : Asymmetric Synthesis of Tricyclic Chromanes

2018

An efficient and highly stereoselective one-pot, four-component synthesis of functionalized tricyclic chromanes has been achieved through an organocatalyzed quadruple domino reaction. The reaction sequence involves an oxa-Michael/Michael/Michael/aldol condensation between alcohols, 2 equiv of acrolein, and nitrochromenes to generate the pharmaceutically important tricyclic chromanes bearing three contiguous stereogenic centers including a chiral tetrasubstituted carbon center in good domino yields (30–70%) and excellent diastereo- and enantioselectivities (>20:1 dr and >99% ee). peerReviewed

synthesisalkoholit (yhdisteet)natural productsStereochemistryasymmetric synthesisluonnontuotteet010402 general chemistry01 natural sciencesBiochemistryDominoStereocenterchemistry.chemical_compoundCascade reactionsynteesiPhysical and Theoretical Chemistryta116chemistry.chemical_classification010405 organic chemistryOrganic ChemistryAcroleindomino reactionsEnantioselective synthesistricyclic chromanes0104 chemical scienceschemistryalcohols (organic compounds)asymmetriaAldol condensationStereoselectivityasymmetryTricyclic
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