𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The Condensation of Salicylaldehydes and Malononitrile Revisited: Synthesis of New Dimeric Chromene Derivatives

✍ Scribed by Costa, Marta; Areias, Filipe; Abrunhosa, Luís; Venâncio, Armando; Proença, Fernanda


Book ID
115535444
Publisher
American Chemical Society
Year
2008
Tongue
English
Weight
216 KB
Volume
73
Category
Article
ISSN
0022-3263

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


ZrCl4/[bmim]BF4-catalyzed condensation o
✍ Hassan Valizadeh; Manzar Mahmoodian; Hamid Gholipour 📂 Article 📅 2011 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 76 KB

## Abstract A versatile and efficient single‐step route to 3‐cyanocoumarins __via__ Knoevenagel condensation of salicylaldehydes and malononitrile using ZrCl~4~ as the catalyst (15 mol %) in ionic liquid 1‐(__n__‐butyl)‐3‐methylimidazolium tetrafluoroborate as reaction medium and catalyst is descri

The condensation of active methylene rea
✍ Tarek M. Abu Elmaati; Fathi M. El-Taweel; Shymaa M. Elmougi; Abdelghani Elagamey 📂 Article 📅 2004 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 120 KB

## Abstract On heating of the cyanoacetic acid cyclopentylidene hydrazide **1** with salicylaldehyde in the presence of bases the azaanthracene derivative **6** was formed. Also, reaction of **3** with malononitrile and ketones **10a,b** afforded the pyrano[3,4‐__c__]chromene **9** and chromeno[3,4