中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
3-乙酰基香豆素 | 3-acetylcoumarin | 3949-36-8 | C11H8O3 | 188.183 |
A new efficient and eco-friendly methodology has been developed for the synthesis of 4-aryl-2,6-dicoumarinylpyridines from coumarinylchalcones and urea, using Bi(iii) nitrate–Al2O3 as catalyst. Coumarinylchalcones were in turn prepared from salicylaldehyde and ethylacetoacetate by the tandem reaction with aldehydes on the surface of Bi(iii) nitrate–Al2O3 in the presence of the co-catalyst Zn(ii) chloride.