Paknikar, S.K.; Bhattacharjee, J.; Nadkarni, K.K.
(Journal of the Indian Institute of Science. 74(2); 1994; 277-285.)
A single-step synthesis of eight natural coumarins, namely, ayapin, limmetin, scoparone, leptodactylone, fraxinol, isoscopoletin, 5,6,7-trimethoxy coumarin and 7-methoxy-8-hydroxy coumarin is hang reported. The method ...