Process for the preparation of arylhydantoins

Details Process for the preparation of arylhydantoins Process for the preparation of arylhydantoins

1993-11-26

1995-07-25

Haley, Jacqueline

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

5483171, C07D23374, C07D23376, C07D23378

Patent

active

054362563

ABSTRACT:
Process for the preparation of 5-arylhydantoins by reaction of an allantoin acid alkyl ester with an aryl compound in a concentrated inorganic acid at temperatures from room temperature to 150.degree. C., with or without a phase transfer agent.

REFERENCES:
patent: 5126459 (1992-06-01), Yamada et al.
patent: 5196545 (1993-03-01), Schermanz et al.
Chemical Abstracts vol. 92: col. 146767b, (1980).
Chemical Abstracts vol. 92: col. 58782x (1980).
J. Org. Chem. 9 21-30 (1944), E. K. Harvill et al.

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