Process for the production of (thio) hydantoins

Details Process for the production of (thio) hydantoins Process for the production of (thio) hydantoins

1982-11-01

1984-08-14

Schwartz, Richard A.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

536 23, 544 60, 544 82, 544139, 544296, 544322, 544336, 544357, 544370, 546210, 546256, 546278, 548101, 548110, 548309, 548311, 548313, C07D23378

Patent

active

044658400

ABSTRACT:
This invention relates to a process for the production of compounds containing at least one (thio)-hydantoin ring in the molecule by reacting a carbodiimide with hydroxy- or mercapto-succinic acid diesters corresponding to the following general formula: ##STR1## wherein R.sup.4 and X are as defined in the description.

REFERENCES:
patent: 4246393 (1981-01-01), Zecher et al.
Chemical Abstracts, 76: 14401m (1972) [Rapi, G. et al., J. Chem. Soc. .COPYRGT. 1971, (22), 3827-3829].
Chemical Abstracts 74: 87082c (1971) [Rubba et al., C. R. Acad. Sci., Ser. .COPYRGT. 1971, 272(5), 475-477].

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