Preparation of fluorophthalimides

Details Preparation of fluorophthalimides Preparation of fluorophthalimides

1984-05-31

1987-07-14

Daus, Donald G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548473, C07D20948

Patent

active

046804129

ABSTRACT:
Fluorophthalimides are prepared by a process in which a fluorophthalic anhydride is reacted, in the presence of an aliphatic sulfone, with from 0.4 to 0.8 mole of urea per mole of fluorophthalic anhydride, and the reaction is carried out first at 110.degree.-140.degree. C. and then at 150.degree.-170.degree. C.

REFERENCES:
patent: 2692267 (1954-10-01), Campbell
patent: 3819648 (1974-06-01), Boehme et al.
patent: 4092300 (1978-05-01), Boldebuck
Piutti, "Derivati Ureici e Tioureici Dell'acide Ftalico," Gazz Chim Italia., vol. XII, pp. 168-180, (1882).
Stern et al, "Cyclic Imides," Chem. Abst., 88: 120812(e), (1978).
Tanaka et al, "Isoqwinolinone Derivatives, " Chem. Abst. 88: 51971(s), (1978).
Zdrojek et al., "Studies on Phthalimide Synthesis," Chem. Abst., 91: 91314(y).
Nippon Mektron, "Manufacture of Poly(amide imide)," Chem. Abst. 98: 35164(g), (1982).
Lyman R. Caswell et al., "Dipole Moments of Some 3- and 4-Substituted Phthalimides and Phthalic Anhydrides Influence of Steric and Resonic Effects, J. Org. Chem., 39 (1974), 1527-1531.

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