synthèse de la coumarine knoevenagel


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Dans les années 1900 la réaction de Knoevenagel a été émergée comme une méthode de synthèse importante pour synthétiser les dérivés de la coumarine possédant 

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12 nov 2017 · Dans notre travaile nous avons synthétisé via condonsation de knoevenagel de nouveaux hybrides coumarine-chalcone a partir 3-acetyl-2H-chromen- 

  • Odeur de la coumarine
    L'odeur est décrite comme odeur de foin fraîchement coupé, mais elle est assez complexe.
    Le produit concentré a des notes crémeuse, caramel, gousse de vanille.
    En solution diluée, les notes sont foin coupé, noisette et amande.

  • Où Trouve-t-on de la coumarine ?

    Composé naturel odorant, la coumarine est utilisée dans certains produits cosmétiques et ménagers (parfums, désodorisants d'intérieur…) mais aussi dans l'alimentation.
    La coumarine est présente à l'état naturel dans certaines plantes telles que la cannelle, la fève tonka et le mélilot.

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