Preparation of hydrantoic acids and hydantoins

Details Preparation of hydrantoic acids and hydantoins Preparation of hydrantoic acids and hydantoins

1986-05-06

1988-05-24

Reamer, James H.

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

Organic compounds

Carboxylic acids and salts thereof

564 48, 544386, 544168, C07C 9900

Patent

active

047467550

ABSTRACT:
The specification discloses reacting a water soluble amino compound with a highly water reactive isocyanate by dissolving the isocyanate in a solvent, such as ethyl acetate, which is water insoluble to slightly water soluble and which has a degree of electrophilicity so as to attract the amino constituent of the amino compound. The two solutions are rapidly mixed together, affording superior yields of product.

REFERENCES:
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patent: 3676456 (1972-07-01), Gruenfeld
patent: 3684774 (1972-08-01), Merten et al.
patent: 3798233 (1974-03-01), Akiba
patent: 3846441 (1974-11-01), Mime et al.
patent: 4076941 (1978-02-01), Sauli
patent: 4093444 (1978-06-01), Clapot et al.
patent: 4230716 (1980-10-01), Jamieson et al.
patent: 4241074 (1980-02-01), Cassidy
Stoutland et al., J. Org. Chem., vol. 24, pp. 818-820, (1959).

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