| 摘要 |
<p>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 which process comprises effecting reaction in the presence of a solid alkali-metal hydroxide between a nitro-N-subsituted phthalimide of the general formula 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 , , , , - continued</p> |
