Bis-aminopyridinium salts

Details Bis-aminopyridinium salts Bis-aminopyridinium salts

1983-11-21

1986-06-17

Fan, Jane T.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546264, 546187, C07D40106, C07D40104

Patent

active

045957606

ABSTRACT:
Novel bis-aminopyridinium salts are useful as phase transfer catalysts in the preparation of aromatic ethers by the reaction of hydroxyaromatic compound alkali metal salts (e.g., bisphenol A disodium salt) with activated halo- or nitro-substituted aromatic compounds (e.g., 4-nitro-N-methylphthalimide). The bis-aminopyridinium salts may be prepared by the reaction of aminopyridines with bis-carbonium ion-generating compounds such as dibromoalkanes.

REFERENCES:
patent: 3458305 (1969-07-01), Doyle
patent: 4107313 (1978-08-01), Bailey
patent: 4206215 (1980-06-01), Bailey
patent: 4256458 (1981-03-01), Degen et al.
patent: 4273712 (1981-06-01), Williams, III
patent: 4460778 (1984-07-01), Brunelle

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