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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 55, Number 4
JKCSEZ 55(4)
August 20, 2011 

Silica Gel Promoted Mild, Efficient and Inexpensive Protocol for the Preparation of 3,4-dihydropyrano[c]chromenes

Silica Gel을 이용한 효율적인 3,4-dihydropyrano[c]chromenes의 합성
T S R Prasanna, K Mohana Raju*

T S R Prasanna, K Mohana Raju*
실리카젤, one pot three-component 축합반응, 방향족 알데히드, 말론니트릴, 4-히드록시쿠마린 , Silica gel, one pot three-component condensation, aromatic aldehyde, malononitrile, 4-hydroxycoumarin.
실온에서 방향족 알데히드, 말론니트릴과4-히드록시쿠마린을neat 실리카젤 속에서 one-pot반응시켜서 3,4-dihydropyrano[c]chromenes을 좋은 수율로 합성하였다.

Highly efficient, three-component condensation of aromatic aldehyde, malononitrile and 4-hydroxycoumarin promoted by neat silica gel at room temperature is described. The method offers an excellent alternative to the synthesis of 3,4-dihydropyrano[c]chromenes. The reactions are fast and clean, and the products are obtained with good yield and purity.

662 - 665
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