C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/255, 260/262
C07D 401/04 (2006.01) C07D 239/48 (2006.01) C07D 239/50 (2006.01)
Patent
CA 1268766
ABSTRACT OF THE DISCLOSURE A novel process is provided herein for the preparation of 2,4-diamino-3-oxy-6-piperidyl-pyrimidine or minoxidil. In such process, a compound of the Formula Image wherein R is a C1-4 alkyl or a phenyl group optionally having up to three C1-4 alkyl substituents, is oxidized to a compound of the Formula Image using magnesium monoperoxyphthalate or MMPP, which has the Formula Image
545907
Farmos-Yhtyma Oy
Lamsa Jyrki
Marcus & Associates
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