Facile Synthesis of 3-Thioxo-3H-benzo[f]chromen-2-yl methanone and 3H-Benzo[f]chromene-3-one Under Solvent Free Condition
作者:Okram Mukherjee Singh、Nepram Sushuma Devi、Laishram Ronibala Devi、Ki-Bum Lim、Yong-Jin Yoon、Sang-Geyong Lee
DOI:10.5012/bkcs.2011.32.1.175
日期:2011.1.20
reaction for the synthesis of coumarin involves the condensation of phenols with β-ketonic esters in the presence of variety of acidic condensing agents such as sul-furic acid, hydrochloric acid and phosphoric acid, phosphorous pentoxide, trifluoroacetic acid and Lewis acids such as ZnCl
在无溶剂条件下,在一定量的 $CuCl_2$ 催化剂存在下,通过缩合现成的 $\beta$ 二硫代氧化物和 S,S-缩醛与 2- 羟基-1-萘甲醛,开发出了一种简单、方便、高效和高产的香豆素组合库合成方法。