Method for production of 1-alkyl-3-phenyluracils

Details Method for production of 1-alkyl-3-phenyluracils Method for production of 1-alkyl-3-phenyluracils

2006-05-18

2010-12-07

Balasubramanian, Venkataraman (Department: 1624)

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

Organic compounds

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

Reexamination Certificate

active

07847097

ABSTRACT:
The present invention relates to a process for preparing 1-alkyl-3-phenyluracils of the formula Iwhere the variables R1to R7are as defined in the description by reacting 3-phenyluracils of the formula IIand alkylating agents of the formula IIIin-line-formulae description="In-line Formulae" end="lead"?R1-L1  III,in-line-formulae description="In-line Formulae" end="tail"?with one another,wherein during the entire reaction the pH is kept in a range from 1 to 6 by adding base a little at a time.

REFERENCES:
patent: 4943309 (1990-07-01), Bell
patent: 7375058 (2008-05-01), Zagar et al.
patent: 2006/0293520 (2006-12-01), Hamprecht et al.
patent: WO 01/83459 (2001-11-01), None

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