Process for producing 2-oxo-1,3-dibenzyl-4,5-cis-imidazolidinedi

Details Process for producing 2-oxo-1,3-dibenzyl-4,5-cis-imidazolidinedi Process for producing 2-oxo-1,3-dibenzyl-4,5-cis-imidazolidinedi

1991-06-18

1992-09-29

Morris, Patricia L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D23332

Patent

active

051515253

ABSTRACT:
Alkali metal salt of meso-2,3-bis(benzylamino)succinic acid, phosgene, and alkali metal hydroxide are reacted under alkaline conditions and in the presence of water and anisole in a multi-phase system to form a multi-phase mixture comprising: (1) a liquid aqueous phase having a pH of at least about 7.5 and comprising an aqueous solution of alkali metal salt of 2-oxo-1,3-dibenzyl-4,5-cis-imidazolidinedicarboxylic acid, and (2) a liquid organic phase. The aqueous solution is acidified to precipitate 2-oxo-1,3-dibenzyl-4,5-cis-imidazolidinedicarboxylic acid.

REFERENCES:
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patent: 3700659 (1972-10-01), Gerecke et al.
patent: 4659837 (1987-04-01), Trautmann et al.
Lavielle, S. et al, Journal of the American Chemical Society, vol. 100, No. 5, pp. 1558-1563 (1978).
Gerecke, M. et al, Helvetica Chimica Acta, vol. 53, Fasc. 5, No. 116, pp. 991-999 (1970).

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