Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2006-10-24
2006-10-24
Habte, Kahsay (Department: 1624)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C544S063000, C544S233000, C549S024000
Reexamination Certificate
active
07125989
ABSTRACT:
The present invention describes organic solvent-soluble Diels-Alder adducts of polycyclic aromatic compounds, such as, oligothiophene, perylene, benzo[ghi]perylene, coronene and polyacenes, with variety of dienophiles containing at least one heteroatom and in some cases two heteroatoms bonded to aromatic moiety, such as, thioxomalonates, azodicarboxylates, thialdehyde, acylnitroso and N-sulfinylamides. The Diels-Alder adducts are prepared by a simple, one step cycloaddition reaction of the polycyclic aromatic compounds, such as, pentacene, or other fused aromatic compounds, with heterodienophiles. The Diels-Alder adducts according to the present invention all form soluble adducts with pentacene and can be converted back to pentacene by retro-Diels-Alder reaction at moderate (60–250° C.) temperatures both in bulk, in solution or as thin-films.
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Afzali-Ardakani Ali
Breen Tricia L
Dimitrakopoulos Christos D
Habte Kahsay
International Business Machines - Corporation
Morris, Esq. Daniel P.
Ohlandt Greeley Ruggiero & Perle L.L.P.
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