Khaligh, Nader Ghaffari <br/><br/>
Poly(4-vinylpyridinium)hydrogen sulfate: a novel and efficient catalyst for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes under conventional heating and ultrasound irradiation.  [electronic resource] 

 -  Ultrasonics sonochemistry  Jul 2012 
 - 736-9 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, Non-U.S. Gov't 
<br/><br/><label>ISSN: </label>1873-2828 
<br/><br/><label>Standard No.: </label>10.1016/j.ultsonch.2011.12.004  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Catalysis<br/>Hot Temperature<br/>Polyvinyls--chemistry<br/>Pyridinium Compounds--chemistry<br/>Sonication<br/>Xanthenes--chemical synthesis