A Practical Knoevenagel Condensation Catalyzed by PEG400 and Anhydrous K2CO3 Without Solvent.
✍ Scribed by Yu-Qing Cao; Zhi Dai; Rui Zhang; Bao-Hua Chen
- Publisher
- John Wiley and Sons
- Year
- 2005
- Weight
- 21 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0931-7597
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✦ Synopsis
Abstract
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## 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