Process for the manufacture of 2-isopropyl-4-methyl-6-hydroxypyr

Details Process for the manufacture of 2-isopropyl-4-methyl-6-hydroxypyr Process for the manufacture of 2-isopropyl-4-methyl-6-hydroxypyr

1995-06-01

1996-05-21

Ford, John M.

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

Organic compounds

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

C07D23934

Patent

active

055191401

ABSTRACT:
Hydroxypyrimidine, a key intermediate in the manufacture of diazinon, is prepared in high yields and high purity by reacting an amidine with methyl-acetoacetate in a dry, i.e. non-aqueous, medium in the presence of a methanolic base in an aliphatic hydrocarbon solvent while azeotropically distilling off water formed during the reaction.

REFERENCES:
patent: 4014879 (1977-03-01), Balke et al.
patent: 5231180 (1993-07-01), Gurfinkel

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