Process for 1-phenyl-imidazoline-2,5-diones

Details Process for 1-phenyl-imidazoline-2,5-diones Process for 1-phenyl-imidazoline-2,5-diones

1990-12-18

1992-11-24

Brust, Joseph Paul

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D23374

Patent

active

051663589

ABSTRACT:
A process for the preparation of a compound of the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are individually selected from the group consisting of hydrogen, alkyl and alkoxy of 1 to 7 carbon atoms, alkenyl, alkynyl, alkenyloxy and alkynyloxy of 2 to 7 carbon atoms, phenyl, phenoxy, --NO.sub.2, --CF.sub.3, acyl of 1 to 7 carbon atoms and esteri-fied carboxy and R.sub.4, R.sub.5 and R.sub.6 are individually hydrogen or alkyl of 1 to 7 carbon atoms comprising reacting a compound of the formula ##STR2## wherein R.sub.1, R.sub.2 and R.sub.3 have the above definitions and Hal is halogen with a compound of the formula ##STR3## wherein R.sub.4, R.sub.5 and R.sub.6 have the above definitions in the presence of a catalyst and optionally a solvent.

REFERENCES:
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patent: 4036850 (1977-07-01), Enders
patent: 4230716 (1980-10-01), Jamieson et al.
patent: 4764625 (1988-08-01), Turner et al.
patent: 4944791 (1990-07-01), Schroder et al.
Katritzky et al., The Principles of Heterocyclic Chemistry, pp. 157-158, Academic Press 1968.

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