Efficient synthesis of 4,5-dihydro-pyrazolo[3,4-c]pyrid-2-ones

Details Efficient synthesis of 4,5-dihydro-pyrazolo[3,4-c]pyrid-2-ones Efficient synthesis of 4,5-dihydro-pyrazolo[3,4-c]pyrid-2-ones

2007-08-15

2008-10-14

Morris, Patricia L (Department: 1625)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

07435821

ABSTRACT:
A novel process and intermediates thereof for making 4,5-dihydro-pyrazolo[3,4-c]pyrid-2-ones of the type shown below from appropriate phenyl hydrazines is described.These compounds can be useful as factor Xa inhibitors.

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Klapars et al., “A General and Efficient Copper Catalyst for the Amidation of Aryl Halides”, J. Am. Chem. Soc. 2002, vol. 124, pp. 7421-7428.

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