3,4,9,10- and 2,5,8,11-Tetramethylperylene are synthesized by a cyclodehydrogenation reaction, initiated by lithium metal, from tetramethyl-1,1′-binaphthalenes. The yields are higher than those obtained by previous methods of perylene synthesis. Some limitations with regard to the nature of the substituents are briefly mentioned.
Process for preparing polyalkyl perylenes, perylenes obtained by this
申请人:Thomson-CSF
公开号:US04956508A1
公开(公告)日:1990-09-11
The invention relates to a process for preparing a polyalkyl perylene which consists in subjecting the corresponding polyalkyl 1,1'-dinaphthalene derivative to a cyclodehydrogenation reaction, by means of an alkali metal. It also relates to the polyalkyl perylene obtained, and to the organic material derived therefrom exhibiting an electron spin resonance spectrum.