Process for the production of 2-ethoxy-4,6-dihydroxypyrimidine o

Details Process for the production of 2-ethoxy-4,6-dihydroxypyrimidine o Process for the production of 2-ethoxy-4,6-dihydroxypyrimidine o

1993-12-22

1995-10-31

Tsang, Cecilia

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

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

C07D23902

Patent

active

054630550

ABSTRACT:
A process is described for the production of 2-ethoxy-4,6-dihydroxypyrimidine or its alkali salt which is an important intermediate in the field of pharmaceuticals and agrochemicals. This compound can be produced using the process according to the invention in good yields and high purity by reacting an O-ethylisourea salt that is preferably formed as an intermediate from cyanamide or chloroformamidinium salts or free O-ethylisourea with an alcoholate and a malonic acid dialkyl ester or a salt of the malonic acid dialkyl ester in alcohol and, if desired, subsequent acidification.

REFERENCES:
patent: 3322526 (1967-05-01), Loux
patent: 4059696 (1977-11-01), Maurer et al.
patent: 5250689 (1993-10-01), Roduit et al.
patent: 5266697 (1993-11-01), Escher et al.

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