C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/306.1
C07D 209/48 (2006.01)
Patent
CA 1086745
ABSTRACT OF THE DISCLOSURE Aromatic bisimides can be prepared by effecting reaction between a 3- or 4-nitro-N-substituted phthalimide with an aromatic dihydroxy compound in the presence of a solid alkali-metal hydroxide and using a certain class of dipolar aprotic compounds, e.g., dimethyl formamide, as a solvent. In particular, a process is disclosed for making aromatic bisimides of the general formula Image which process comprises effecting reaction in the presence of a solid alkali-metal hydroxide between a nitro-N-subsituted phthalimide of the general formula Image with an aromatic dihydroxy compound of the general formula HO - R - OH where R is a member selected from the class consisting of (a) divalent radicals of the formula Image , Image , Image , Image , - continued - Abstract - continued: Image , Image , and Image and (b) divalent organic radicals of the general formula Image where X is a member selected from the class consisting of divalent radicals of the formulas -CyH2y , Image , Image , Image , -O- , and -S- , where m is 0 or 1, y is a whole number from 1 to 5, and R' is the phenyl radical or an alkyl radical of from 1 to 2 carbon atoms, the said reaction being conducted in a dipolar aprotic solvent selected from the class consisting of N,N-dimethyl acetamide, dimethyl formamide (DMF), N-methyl pyrrolidone, and mixtures of such solvents.
272587
Company General Electric
Eckersley Raymond A.
LandOfFree
Preparation of aromatic bisimides does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Preparation of aromatic bisimides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of aromatic bisimides will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-327044