N. Al-Maharik, S. Kaltia, I. Mutikainen
Mar 25, 2000
Citations
0
Influential Citations
24
Citations
Journal
The Journal of organic chemistry
Abstract
Unique C-C-bridged bis-isoflavones 5, 8, and 9 were obtained by reaction of 2-bromomethyl-7,4'-dimethoxyisoflavone 4 with ethyl cyanoacetate anion or tetraethylammonium cyanide or by Pd-catalyzed ethoxycarbonylation, respectively. The phenolic carboxylic acid 7 is available from 5 in two steps.