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Chemoselective Knoevenagel Reaction as a Novel Route for the Synthesis of Biscoumarinyl Methylsulfones (VII) and [4 + 1], [1 + 4] Approach Synthesis of Aminooxadiazolyl (X) and N-(2,5-Dimethyl)pyrrolylcoumarins (XII).

✍ Scribed by Ganesh N. Alawandi; Manohar V. Kulkarni

Publisher
John Wiley and Sons
Year
2006
Weight
32 KB
Volume
37
Category
Article
ISSN
0931-7597

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PPh3-catalyzed knoevenagel condensation:
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✍ Muvvala Venkatanarayana; Pramod Kumar Dubey 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 270 KB 👁 1 views

## Abstract Triphenylphosphine (TPP) has been utilized as a novel and efficient catalyst for the Knoevenagel condensation of indole‐3‐carboxaldehydes **1(a–e)**, 1‐methyl‐1H‐indole‐3‐carboxaldehydes **4(a–e)**, and 1‐ethyl‐1H‐indole‐3‐carboxaldehydes **6(a–e)** with the active methylene compound, t