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Ultrasound promoted synthesis of some novel fused pyrans

✍ Scribed by Tamer S. Saleh; Naglaa M. Abd El-Rahman; Ahmed A. Elkateb; Nehal O. Shaker; Naema A. Mahmoud; Shimaa A. Gabal

Book ID: 113940716
Publisher: Elsevier Science
Year: 2012
Tongue: English
Weight: 343 KB
Volume: 19
Category: Article
ISSN: 1350-4177
DOI: 10.1016/j.ultsonch.2011.10.008

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## Abstract magnified image 2‐(1‐Aryl‐ethylidene)‐malononitriles **1a**, **1b**, **1c**, **1d** undergo self dimerization in ethanol catalyzed by sodium ethoxide to afford 2‐[4,6‐diaryl‐3‐cyano‐6‐methyl‐5,6‐dihydropyridin‐2(1__H__)‐ylidene]‐malononitrile derivatives **3a**, **3b**, **3c**, **3d** r