Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1983-11-18
1986-11-18
Daus, Donald G.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
548461, 528 26, 528125, 528128, 528185, 524425, 524451, C07D20948, C07D40310
Patent
active
046237321
ABSTRACT:
Compounds which are bis-(N-alkylphthalimides) are prepared by a new process in which a halogen-containing precursor is heated in the presence of a nickel compound, a reducing agent, for example, metallic zinc, and an organic solvent. The resulting compound is useful in a process for the preparation of a copolymer, in which the compound is reacted with alkali to form a tetraacid, the acid is dehydrated to form a dianhydride, and the dianhydride is reacted with a second dianhydride and a diamine under copolymer-forming conditions.
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Williams et al., J. Org. Chem., vol. 43(2), (1978) pp. 250-254.
Colon, et al., Chem. Abstracts, vol. 95 (1981), Entry 62993w.
Daus Donald G.
General Electric Company
Teoli, Jr. William A.
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