Perfluoro-keto-ylids as precursors of polychloroketones, 1,2-dik

Details Perfluoro-keto-ylids as precursors of polychloroketones, 1,2-dik Perfluoro-keto-ylids as precursors of polychloroketones, 1,2-dik

1983-05-23

1985-10-08

Berch, Mark L.

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

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

568312, 568316, 568323, 568325, C07D24142, C07D40304, C07B 900, C07B 700

Patent

active

045461848

ABSTRACT:
The invention relates to a novel fluorinated pre-polymer and novel process steps in producing the same. The pre-polymers are quinoxaline materials derived by reaction of diketone linkage containing perfluoro-compounds with an aromatic diamine. The diketone is produced by oxidatively dechlorinating a polychloroketone which may be a monoketone or a bis-ketone. The polychloroketone is produced by reacting a keto-ylid with a chlorinating agent, e.g., chlorine. The keto-ylid is produced by reacting a phosphorane with an acid halide of a polyoxy-perfluoroalkylene oxide wherein the perfluoro-oxyalkylene group contains two or three carbon atoms, and there are present from two to twenty perfluoro-oxyalkylene units in the oligomer. The quinoxalines, the polychloroketones and the diketones hereof are novel products. Cross-linking may be effected with a free radical generator.

REFERENCES:
patent: 3642700 (1972-02-01), Augl
patent: 3661850 (1972-05-01), Stille
patent: 3766141 (1973-10-01), Augl
patent: 4024163 (1977-05-01), Elliott et al.
patent: 4046814 (1977-09-01), Harris et al.
patent: 4082806 (1978-04-01), Harris et al.
House, "Modern Synthetic Reactions, 2nd Ed", p. 692.

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