反应详情

Following the procedure given in Example 1b equimolar quantities of the above named 5,7-dichloro-2-(p-tolyl)-benzofuran and 4-phenylbenzalaniline were interacted in the presence of potassium tert.-butoxide to give 5,7-dichloro2-{4-[2-(4-biphenylyl)vinyl]phenyl} benzofuran which, following recrystallization from chlorobenzene, melted at 258°-260° C. The wavelength of maximum excitation of this compound was 375 nm., and the wavelength of maximum emission was 431 nm.