Current time in Korea 01:07 Oct 22 (Sun) Year 2017 KCS KCS Publications
KCS Publications
My Journal Log In Register
HOME > Search > Browsing(BKCS) > Archives

Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 32, Number 12
BKCSDE 32(12)
December 20, 2011 

 
Title
A Highly Efficient and Fast Method for the Synthesis of Biscoumarins Using Tetrabutylammonium Hexatungstate [TBA]2[W6O19] as Green and Reusable Heterogeneous Catalyst
Author
Abolghasem Davoodnia
Keywords
Aromatic aldehydes, Biscoumarins, 4-Hydroxycoumarin, Tetrabutylammonium hexatungstate [TBA]2[W6O19]
Abstract
A novel catalytic synthesis of biscoumarins from 4-hydroxycoumarin and aromatic aldehydes has been developed. The reaction occurs in ethanol in the presence of tetrabutylammonium hexatungstate [TBA]2[W6O19] as catalyst to give the corresponding products in high yields. This new approach has short reaction times, clean reaction profiles, and simple experimental and workup procedures. Moreover, the catalyst can be easily recovered by filtration and used at least three times with only slight reduction in its catalytic activity.
Page
4286 - 4290
Full Text
PDF