Aqueous hexasubstituted guanidinium chlorides and methods for th

Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing

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546186, 546245, 564 57, 564 61, 564230, C07C27708

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active

058722947

ABSTRACT:
Hexasubstituted guanidinium chlorides are prepared by a method which affords them in high yield as aqueous solutions, optionally also containing alkali metal chlorides. The solutions may be employed as sources of hexasubstituted guanidinium salts useful as phase transfer catalysts and the reaction of alkali metal salts of dihydroxyaromatic compounds with substituted imides to form polyetherimides or their intermediates.

REFERENCES:
patent: 5081298 (1992-01-01), Brunelle
patent: 5132423 (1992-07-01), Brunelle et al.
patent: 5229482 (1993-07-01), Brunelle
Barton et al., J. Chem. Soc., Perkin Trans., 1,2085-2090 (1982).
Kantlehner et al., Liebigs Ann. Chem., 1984, 108-126.

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