Novel photoisomerization of 2,3-bis-(p-methoxyphenyl)benzofuran into 2,6-dimethoxy-9-(2-hydroxyphenyl)anthracene
Abstract
Photolysis of 2,3-bis-(p-methoxyphenyl)benzofuran in benzene under N2 using either a mercury lamp or sunlight yield besides the expected phenanthrene derivative (6), the novel rearrangement anthracene (5).