Substituted tetraamino heterocyclic compounds, useful in the pre

Details Substituted tetraamino heterocyclic compounds, useful in the pre Substituted tetraamino heterocyclic compounds, useful in the pre

1974-01-31

1976-03-09

Demers, Arthur P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 302, 260 308R, 260 324, 260 326N, 260 725, 260 784R, 260 784E, 260 78TF, 260 47CP, 260 65, 260246R, 260250R, 2602948F, 260295CA, 260296R, 2603092, C07D21361, C07D21374

Patent

active

039431258

ABSTRACT:
This invention relates to substituted tetraamino pyridines and to methods whereby such compounds are prepared. It also relates to the linear precyclized polymers produced by reaction of substituted tetraaminopyridines, or their acid salts, with a substantially equimolar amount of a suitable bis(acid halide) or dianhydride in a polar aprotic solvent at temperatures between about -10.degree.C and 70.degree.C. The resulting soluble, high molecular weight precyclized intermediates can be cyclodehydrated and may also be crosslinked to yield novel polybenzimidazoles and polyimidazopyrrolones.

REFERENCES:
patent: 2052633 (1936-09-01), Kranz
patent: 3470172 (1969-09-01), Kaufman
patent: 3678061 (1972-07-01), Coburn
patent: 3740410 (1973-06-01), Gerber
patent: 3804804 (1974-04-01), Gerber et al.
patent: 3838154 (1974-09-01), Gerber
Bernstein et al., J. Am. Chem. Soc. 69 (1947), p. 1151-1157.

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