Universal Display Corporation
ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

Abstract:

Provided is a process for preparation of a compound of Formula 1 ##STR00001## where, ring Y and ring Z are each independently a 5-membered or 6-membered carbocyclic or heterocyclic ring; Z.sup.1 and Z.sup.2 are each independently C or N; each R.sup.Y and R.sup.Z independently represents mono to the maximum possible number of substitutions, or no substitution; x=1, 2, or 3; y=0, 1, or 2; and x+y=3. Disclosed is a chemical synthesis process that involves contacting a compound of Formula 2 ##STR00002## with a compound of Formula 3 ##STR00003## in an organic solvent to yield a compound of Formula 1 ##STR00004##