ChemInform Abstract: PPh3-Catalyzed Knoevenagel Condensation: A Facile Synthesis of 5-(1H-Indol-3-yl)methylene-2,2-dimethyl-1,3-dioxane-4,6-dione, and Their N-Alkyl Derivatives by Using PEG-600 as the Reaction Medium.

PPh3-catalyzed knoevenagel condensation:

PPh3-catalyzed knoevenagel condensation: A facile synthesis of 5-(1H-indol-3-yl)Meth- ylene)-2, 2-Dimethyl-1, 3-Dioxane-4, 6-dione, and their N-alkyl derivatives by using peg-600 as the reaction medium

✍ 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