95710-69-3Relevant academic research and scientific papers
PROCESS FOR THE PRODUCTION OF INTERMADIATES FOR THE PREPARATION OF TRICYCLIC BENZIMIDAZOLES
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Page/Page column 96-97, (2010/11/25)
The invention relates to a process for the synthesis of compounds of the formula 1-a and compounds of the formula 1-b. The compounds of the formula 1-a and the compounds of the formula 1-b, in which the substituents R1, R2, R3, and Ar have the meanings indicated in the description, are valuable intermediates for the preparation of pharmaceutically active compounds.
