![<b>Green and practical synthesis of benzopyran and 3-sunstituted coumarin derivatives by Brønsted acid ionic liquid [(CH<sub>2</sub>)<sub>4</sub>SO<sub>3</sub>HMIM][HSO<sub>4</sub>]</b>]()
<b>Green and practical synthesis of benzopyran and 3-sunstituted coumarin derivatives by Brønsted acid ionic liquid [(CH<sub>2</sub>)<sub>4</sub>SO<sub>3</sub>HMIM][HSO<sub>4</sub>]</b>M. Heravi, Majid; Ansari, Parvaneh; Ansari, Parvaneh; Saeedi, Mina; Saeedi, Mina; Tavakoli-Hosseini, Niloofar; Karimi, Narges; Karimi, Narges; Tavakoli-Hosseini, Niloofar · Bulletin of the Chemical Society of Ethiopia · 2011