Process for the preparation of hydantoins

Details Process for the preparation of hydantoins Process for the preparation of hydantoins

1979-07-26

1981-07-28

Jiles, Henry R.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D23364

Patent

active

042811406

ABSTRACT:
Hydantoins are prepared by reacting a monoisocyanate or a monoisothiocyanate with an unsaturated diamide at 0.degree.-450.degree. C. said diamide being a compound of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.6 may be the same or different and each is selected from the group consisting of hydrogen, alkyl of 1-20 carbon atoms, alkenyl of 1-20 carbon atoms, aryl of 4-20 carbon atoms and aralkyl of 7-20 carbon atoms, and R.sub.4 and R.sub.6 together are additionally together a heterocyclic having 3-7 carbon atoms wherein the nitrogen heteroatom is bonded to both R.sub.3 and R.sub.6, and

REFERENCES:
patent: 4089860 (1978-05-01), Merten et al.

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