Abstract
Facile synthesis of furo[3,2-c]coumarins (2a–g) via cyclocondensation of 4-hydroxycoumarin and α-tosyloxyketones (1a–g) is described. A plausible mechanism involving C-C bond formation followed by 5-exo-tet cyclization is suggested.
GRAPHICAL ABSTRACT
![](/cms/asset/919f2cd1-4904-4a81-9449-c919184b6625/lsyc_a_570471_o_uf0001.gif)
ACKNOWLEDGMENTS
We are highly thankful to the Council of Scientific and Industrial Research (CSIR), New Delhi (Grant No. CSIR 01(2186)/ 07/ EMR-II), and the Department of Science and Technology, New Delhi (Grant No. SR/FTP/CS-125/2006), for providing financial assistance to accomplish this research work.