Methods of making tris(N-aryl benzimidazoles)benzenes and their use in electronic devices
US7273939B1 · kind B1 · utility
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10Claims
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Key dates
| Filing date | Dec 15, 2005 |
| Grant date | Sep 25, 2007 |
| Priority date | — |
| Expiry date | Dec 15, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D405/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Provided are methods for preparing a compound of Formula I:where the method comprises the steps of: with 1,3,5-benzene-tricarbonyl chloride in the presence of a polar aprotic solvent to form an amide adduct; and subsequently condensing the amide with a proximate anilino group present in the adduct in the presence of a condensing agent to form a compound of Formula I wherein R1, R2, Ar, m, p, and t are as defined in the specification.
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