Process for preparing benzimidazole compounds

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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C548S304700, C548S306100, C548S310700

Reexamination Certificate

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08039637

ABSTRACT:
Provided are methods for the synthesis of heterocyclic compounds such as benzimidazole carboxylic acid core structures having Formula Ia-1 and their synthetic intermediates: wherein Z, X1, X2, X5, R2and R10are as defined herein. Compounds of Formula Ia-1 and their synthetic intermediates can be used to prepare heterocyclic derivatives such as benzimidazole derivatives.

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