The Synthesis of Novel Organic Light-Emitting Material 2,7-Dibromo-2′,3′,6′,7′-Tetra(2-Methylbutyloxy)spirobifluorene
A mide, simple and efficient synthetic procedure for the preparation of 2,7-dibromo-2′,3′,6′,7′-tetra(2-methylbutyloxy)spirobifluorene and key intermediates, tetra(2-methlbutyloxy)biphenyl ，2-bromo-4,5,3′,4′-tetra(2-methylbutyloxy)biphenyl, 2,7-Dibromo-2′,6,3′,7′--tetra(2-methylbutyloxy)biphenyl-9-Fluorenol, has been developed. The procedure described herein offers several advantages, including high product yields, easy purification, and large scale production. Ether protected 2,7-dibromo-9,9′-spirobifluorene has good solubility in organic aolvents to permit an appropriate coating process, ability to achieve various colors so as to make full color display elements possible.
Jinglong Bu, Pengcheng Wang, Liqun Ai, Xiaoming Sang, Yungang Li
X. X. Sun et al., "The Synthesis of Novel Organic Light-Emitting Material 2,7-Dibromo-2′,3′,6′,7′-Tetra(2-Methylbutyloxy)spirobifluorene", Advanced Materials Research, Vols. 287-290, pp. 270-275, 2011