Paper Information

Journal:   JOURNAL OF THE IRANIAN CHEMICAL SOCIETY(JICS)   FEBRUARY 2011 , Volume 8 , Number SUPPLEMENT; Page(s) 17 To 27.
 
Paper: 

CHEMOSELECTIVE SYNTHESIS OF 2-ARYLOXAZINES AND 2-ARYLTETRAHYDROPYRIMIDINES USING NANO-SIO2AS A REUSABLE SOLID ACID CATALYST UNDER THERMAL CONDITIONS AND MICROWAVE IRRADIATION

 
Author(s):  MOHAMMADPOOR BALTORK I.*, MOGHADAM M., TANGESTANINEJAD S., MIRKHANI V., ESKANDARI Z., SALAVATI H.
 
* DEPARTMENT OF CHEMISTRY, CATALYSIS DIVISION, UNIVERSITY OF ISFAHAN, ISFAHAN, 81746-73441, IRAN
 
Abstract: 

Nano-SiO2 solid acid efficiently and selectively catalyzed the cyclocondensation reaction of arylnitriles with 3-amino-1- proopanol or 1, 3-diaminopropane to afford their respective 2-substituted oxazines and tetrahydropyrimidines in high yields under thermal conditions and microwave irradiation. This methodology works effectively for the selective synthesis of mono-1, 3- oxazines and mono-tetrahydropyrimidnes from dinitriles. The catalyst could be recycled and reused several times without a noticeable decrease in its activity.

 
Keyword(s): OXAZINES, TETRAHYDROPYRIMIDINES, MICROWAVE IRRADIATION, NANO-SIO2 CATALYST, SOLVENT-FREE
 
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