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

Journal of the Korean Chemical Society

K Mohana Raju¹  T S R Prasanna¹ 

关键词: 4-È÷µå·Ï½ÃÄí¸¶¸°;    Silica gel;    one pot three-component condensation;    aromatic aldehyde;    malononitrile;    4-hydroxycoumarin.;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

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.

【 授权许可】

Unknown