Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2008-07-01
2008-07-01
Aulakh, Charanjit S (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C546S098000
Reexamination Certificate
active
10510579
ABSTRACT:
A process for preparing perylene-3,4:9,10-tetracarboxylic diimides of the general formula Icomprisingdimerizing a naphthalene-1,8-dicarboximide of the formula IIin a reaction medium consisting essentially of an apolar aprotic organic solvent and an alkali metal base and subsequently reoxidizing the resulting alkali metal salt of the leuco form of the perylene-3,4:9,10-tetracarboxylic diimide in the presence of a polar solvent.
REFERENCES:
patent: 3446810 (1969-05-01), Dien
patent: 4197111 (1980-04-01), Pallos et al.
patent: 4919848 (1990-04-01), Harnisch
patent: 276 956 (1913-10-01), None
patent: 0 054 806 (1980-12-01), None
patent: 0 525 538 (1993-02-01), None
patent: 141 431 (1977-03-01), None
patent: 3-223282 (1991-10-01), None
patent: 9-194746 (1997-07-01), None
patent: 78 458 (1975-07-01), None
Sakamoto, Takaaki et al. “Oxidative Coupling Reaction of 1,8-Naphthalimide a new synthetic methodology for the production of Perylene-3,4,9,10-Tetracarboximide”, Kawamura Rikagaku Kenkyusho Hokoku, vol. 8, pp. 85-95, with English abstract & full English translation 1997.
Sakamoto, Takaaki et al. “A ‘Green’ Route to Perylene Dyes: Direct Coupling Reactions of 1,8-Naphthalimide and Related Compounds under Mild Conditions Using a “New” Base Complex Reagent, t-BuOK/DBN”, J. Org. Chem. vol. 66, pp. 94-98 2001.
Jankowski, Z. et al. “Syntheses and Properties of Some Derivatives of N-[4′-(1,2,3-Benzotriazolyl)-phenyl]-naphthalimide”, Pol. J. Chem, vol. 55, No. 3, pp. 565-563 (abstract only) 1981.
Ganin, E.V. et al. “N-Substituted Isonaphthalimides. Peculiarities of Their Formation and Their Reaction with Amines”, Zh. Org. Khim. vol. 21, No. 11, pp. 2415-2423 (abstract only) 1985.
Boehm Arno
Dung Bernhard
Helfer Willi
Henning Georg
Mueller Felix
LandOfFree
Method for the production of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for the production of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the production of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3914464