Patent ID: 11917906
Assignee: MERCK PATENT GMBH
Field: Organic fine chemistry (Chemistry)
Classification: CPC C  H  Y | IPC H

Claim 11:
12. The compound as claimed in claim 1, characterized in that at least one of the R and/or Ra radicals is selected from the group of the fluorenes, indenofluorenes, spirobifluorenes, carbazoles, indenocarbazoles, indolocarbazoles, spirocarbazoles, pyrimidines, triazines, lactams, triarylamines, dibenzofurans, dibenzothienes, imidazoles, benzimidazoles, benzoxazoles, benzothiazoles, 5-arylphenanthridin-6-ones, 9,10-dehydrophenanthrenes, fluoranthenes, anthracenes, benzanthracenes and fluoradenes.