5-Secondary alkylidene hydantoins

Details 5-Secondary alkylidene hydantoins 5-Secondary alkylidene hydantoins

1977-11-17

1979-11-20

Trousof, Natalie

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548314, C07D23374

Patent

active

041751981

ABSTRACT:
A 5-Secondary alkylidene hydantoin having the formula ##STR1## in which: (a) R is an alkyl group having 1-2 carbon atoms; and (b) X is hydrogen or a phenyl group can be prepared by condensing a hydantoin having the formula ##STR2## and a ketone having the formula ##STR3## in the presence of ammonia or an amine catalyst, the amine being a primary amine having a pK.sub.b between about 3 and about 5.

REFERENCES:
patent: 2861079 (1958-11-01), Britton et al.
patent: 3798233 (1974-03-01), Akiba et al.
Doyle et al. J. Chem. Soc. (London) 1955, pp. 2265-2273.
Kirk-Othmer Encyclopedia of Chemical Technology, vol. 11 2nd ed., pp. 144-146.
Yale Chem. Abst. 1954, vol. 48, columns 1276-1278.
Yale J. Amer. Chem. Soc. 1953, vol. 75, pp. 675-678.

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