Abstract An efficient method for the preparation of diaryl selenides, which are important in biology and materials science, is described. Specifically, the development of highly substituted phenanthrenyl phenyl selenides 4 and 6 by metal-catalyzed cyclization of o- phenylarylalkynes species 1 was successfully performed. The selectivity for 9-and 10- selenyl phenanthrenes was perfectly controlled by indium (III) and gold (I) catalysts, and ...
