Process for preparing pentacene derivatives
Assignee3M Innovative Properties Company
InventorsDennis E. Vogel, Kim M. Vogel
Life of this patent
Estimating the term…
Abstract
A process for preparing substituted pentacene compounds comprises the step of cyclizing substituted bis(benzyl)phthalic acids using an acid composition comprising trifluoromethanesulfonic acid, the substituted bis(benzyl)phthalic acids being represented by the following general formulas: wherein each R (that is, each of the groups R1 through R8) is independently an electron-donating group, a halogen atom, a hydrogen atom, or a combination thereof.
Claims20
A process for preparing pentacene compounds comprising the step of cyclizing at least one substituted bis(benzyl)phthalic acid to form the corresponding substituted pentacenedione by using an acid composition comprising trifluoromethanesulfonic acid, said substituted bis(benzyl)phthalic acid being selected from those represented by the following general formulas:
- wherein each R group is independently selected from the group consisting of electron-donating groups, halogen atoms, hydrogen atoms, and combinations thereof.
Substituted bis(benzyl)phthalic acid compounds represented by the following general formulas:
- wherein each R group is independently selected from the group consisting of electron-donating groups, halogen atoms, hydrogen atoms, and monovalent combinations therefore.
Substituted bis(benzoyl)phthalic acid compounds represented by the following general formulas:
- wherein each R group is independently selected from the group consisting of hydrogen atoms and alkyl groups having at least two carbon atoms.
Dependencies are inferred from the claim text.