An efficient synthesis of novel 3-hydroxy-12-arylbenzo[<i>a</i>]xanthen-11-ones and 5,12-diarylxantheno[2,1-<i>a</i>]xanthene-4,12-diones using <i>p</i>TSA in [bmim]BF<sub>4</sub>
作者:Sneha Yadav、Bhaskara Nand、Jitender M. Khurana
DOI:10.1139/cjc-2012-0494
日期:2013.8
We introduce a simple, efficient, and environmentally benign synthesis of a series of novel xanthenes via one-pot condensation of 2,6-dihydroxynaphthalene, aldehydes, and dimedone in [bmim]BF4 with pTSA as catalyst in high yields.