Organic compounds -- part of the class 532-570 series – Organic compounds – Nitrogen attached directly or indirectly to the purine ring...
Reexamination Certificate
2008-05-13
2008-05-13
Murray, Jeffrey H. (Department: 1624)
Organic compounds -- part of the class 532-570 series
Organic compounds
Nitrogen attached directly or indirectly to the purine ring...
C558S343000
Reexamination Certificate
active
11175612
ABSTRACT:
The present invention relates to an improved process for preparing ring-fluorinated aromatics of the general formula (I)by a halogen exchange reaction (halex reaction) of a plurality of halogen substituents in one stage in the presence of a catalyst.
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Marhold Albrecht
Pleschke Axel
LANXESS Deutschland GmbH
Miller Michael A.
Murray Jeffrey H.
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