Hydroxyphenylated hydantoins

Details Hydroxyphenylated hydantoins Hydroxyphenylated hydantoins

1977-03-17

1978-12-05

Raymond, Richard L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D23378, C07D23502

Patent

active

041287185

ABSTRACT:
New hydroxyphenylated hydantoins are useful as stabilizers for synthetic organic polymeric materials. The new hydroxyphenylated hydantoins may be additionally substituted in the 1,3 and/or 5 positions of the hydantoin ring.
The hydroxyphenylated and 5-substituted hydroxyphenylated hydantoins are generally prepared by reacting hydroxphenylated ketones or aldehydes with alkali cyanide and ammonium carbonate. Hydroxyphenylated hydantoins substituted in the 1 and/or 3 positions are generally prepared by reacting the 1 and/or 3-unsubstituted hydroxyphenylated hydantoins with the corresponding halogen or dialkylaminomethyl derivatives.

REFERENCES:
patent: 3939175 (1976-02-01), Schmidt et al.
patent: 4044019 (1977-08-01), Schmidt et al.

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